Infa-Red Remote Control


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I have received a number of emails requesting schematics for infa-red remotes. So here is one. This remote transmits a tone using an infa-red LED. This tone is decoded by the receiver. Since the receiver only switches when it "hears" the tone, there are no accidental activations.

Schematic For Transmitter

This is the schematic of the IR Transmitter

Schematic For Receiver

This is the schematic for the IR Receiver

Parts

Part
Total Qty.
Description
Substitutions
R1122K 1/4W Resistor
R211 Meg 1/4W Resistor
R311K 1/4W Resistor
R4, R52100K 1/4W Resistor
R6150K Pot
C1, C220.01uF 16V Ceramic Disk Capacitor
C31100pF 16V Ceramic Disk Capacitor
C410.047uF 16V Ceramic Disk Capacitor
C510.1uF 16V Ceramic Disk Capacitor
C613.3uF 16V Electrolytic Capacitor
C711.5uF 16V Electrolytic Capacitor
Q112N2222 NPN Silicon Transistor2N3904
Q212N2907 PNP Silicon Transistor
Q31NPN Phototransistor
D111N914 Silicon Diode
IC11LM308 Op Amp IC
IC21LM567 Tone Decoder
LED11Infa-Red LED
RELAY16 Volt Relay
S11SPST Push Button Switch
B113 Volt BatteryTwo 1.5V batteries in series
MISC1Board, Sockets For ICs, Knob For R6, Battery Holder
RELAY16 Volt Relay

Notes

  1. To adjust the circuit, hold down S1 while pointing LED1 at the receiver. Adjust R6 until you hear the relay click.
  2. You can increase range by using a high output LED for LED1.
  3. Bright light will stop the receiver from responding to the transmitter.
  4. There is an error in the schematic. There shuold be a 1 megaohm resistor between pin 3 of IC1 and ground. This provides a 0 volt reference to bias the IC.

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Comments

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anonymous
Infa-Red Remote Control
Thursday, December 27, 2012 10:12:07 PM
How long is the range of IR transmitter can afford? Should I put the transmitter and receiver in a dark place? Thanks
anonymous
Infa-Red Remote Control
Tuesday, February 28, 2012 3:09:39 AM
oh........dont waste your time...its fake
anonymous
Infa-Red Remote Control
Friday, November 25, 2011 11:09:18 PM
Sine input & output to IC1 is capacitor coupled, there is no need for dual voltage supplies for the opamp. You can use single supply and ground, yes?
Andy
Infa-Red Remote Control
Wednesday, October 27, 2010 3:33:19 AM
A lot of people have questions about possible replacements. The 2N2907 PNP can possibly be replaced by a 2N3906 or BC327. The LM308, try substituting TL081CN. If better precision is required on R6, try using a trim-pot instead. For the IR LED and Phototransistor, try radioshack.com, they sell a matched set at http://www.radioshack.com/product/index.jsp?productId=2049723 for $3.49
darpan pathak
Infa-Red Remote Control
Friday, September 03, 2010 6:51:39 AM
in receiver circuit i think the connection between 1 and 8 is not right there will be a 5 in place of 8
fatha
Infa-Red Remote Control
Monday, July 12, 2010 8:02:22 AM
what kind of NPN PHOTOTRANSISTOR IS USED HERE? is there any substitution of LM308?
Lee, Manchester, England
Infa-Red Remote Control
Sunday, April 18, 2010 6:03:04 PM
I set up the circuit for a small project and it worked very well. In order to function correctly, the reveiver needs to calibrated so as the Centre Frequency of the Tone Decoder, matches the frequency of the output of Pin 6 of the Op Amp. this is acheived by adjusting the Potentiometer to the required resistance (2.275K according to my calculations). if its difficult to set the Potentiomter exactly use a decade counter instead. The Frequencies have to be matched because the Tone Decoder purposefully has the characteristic of a high rejection ratio of intruder IR signals, ie TV Remotes. Also it is advisable to choose an IR Emitting Diode and Phototransistor that are strongly compatible with each other to acheive the best response time. The de-coupling electrolytic capacitors external to the Tone Decoder do not have to be the exact values stated, but as close as possible. Enjoy!
saad
Infa-Red Remote Control
Wednesday, April 14, 2010 9:17:42 AM
at what frequency does the LED of transmitter circuit emit infrared rays ? can any one help please !!!!
RAVINDER PAL SINGH
Infa-Red Remote Control
Sunday, April 04, 2010 2:10:12 AM
what kind of NPN PHOTOTRANSISTOR IS USED HERE? what the type (number)of Infa-Red LED ? plz tell
anonymous
Infa-Red Remote Control
Friday, March 05, 2010 8:42:51 AM
This is great.
sumit
Infa-Red Remote Control
Saturday, December 05, 2009 8:41:59 AM
what kind of NPN PHOTOTRANSISTOR IS USED HERE? is there any substitution of LM308?
cynic
Infa-Red Remote Control
Tuesday, October 06, 2009 11:49:37 AM
to mercurt: please, I want your help about what resistor you substitute the 1megOhm? im also constructing this circuit as our project in data communication...please help me, thanks a lot in advance...
william
Infa-Red Remote Control
Sunday, October 04, 2009 10:24:45 PM
Is there a way to get more than one channel?
majid thakur
Infa-Red Remote Control for chanel latced bottan infa-red remote control
Tuesday, September 29, 2009 2:46:32 PM
Could someone please help me? I am a beginner at this kind of stuff and i want to make 4 Chanel infrared remote control, depending on the components. Each device output can be configured to be momentary (turned on while you press the button) or latched. Latched outputs can be toggled on/off by one button per channel, or turned on and off by two buttons per channel. i have one 4 x 8 Chanel schematic for infa-red remote control but that its never responded. You can see that web site (Peter’s electronic projects) DIY remote control based on PIC help me with schematic related part.
Bipin kumar
infrared remote control
Friday, September 18, 2009 1:10:32 AM
1.whether any programming is required for infrared remote control? 2.Hoe power is supplied to infrared controller? 3.How logic circuit is made? I will heartly obliged if u wl sent me the answers as quickly as possible. Thanks
abdul hadi
Infa-Red Remote Control
Sunday, September 06, 2009 10:37:01 AM
to mercurt : please can u tell me which changes u made to make it work i have also built this circuit for the model making competition in college so pleaseeeeeeeee can u help me Thanks in advance
anonymous
Infa-Red Remote Control
Wednesday, August 05, 2009 1:09:55 PM
what is the wavelength of the IR LED?
Mercurt
Infa-Red Remote Control
Wednesday, July 15, 2009 12:58:39 AM
Thanks for the great circuit. It worked after I did some tuning of my own.. First the 1 megaohm didnt work for me so I had to find a suitable resistor that worked. Also a precise resistance is required from the resistance pot to make it work.. But overall it worked great.. Thanks again.. Keep it up..
RR S
Infa-Red Remote Control
Thursday, May 21, 2009 9:27:07 PM
I just went to the store ans asked for any phototransistor...The guy said I was crazy because he doesnt know what to sell me from the milluion parts he has. He asked for a part number...can someone give me the pert number they used or tried. The guy wouldnt even sell me a random one...I asked him but he refused. Please someone help me out.
anonymous
Infa-Red Remote Control
Thursday, May 07, 2009 10:04:24 PM
Could someone please help me. I am a beginner at this kind of stuff and I just want to make a one button simple IR remote. I have an IR receiver module. Is this an IR triggered switch in itself?
vijay
Infa-Red Remote Control
Thursday, February 05, 2009 2:45:30 AM
Its very nice.
Dhanasekar P
Infa-Red Remote Control
Sunday, February 01, 2009 9:15:43 PM
Hi I`ve a gradually voltage increased LED on the transmission side. For this i need a IR / RF transmitter and receiver circuit
ankit patel
Infa-Red Remote Control
Wednesday, January 28, 2009 3:46:28 AM
i want to set frequency 0f more than 50 what i have to do?
KFH
Infa-Red Remote Control
Saturday, January 24, 2009 3:40:56 PM
I'm in my way to finish the connection of the circuit but i'm asking how can i let the NPN phototransistor receive the sign from the infra-red with longer distance pls help me in this thank you... dear
sparchead
Infa-Red Remote Control
Wednesday, January 14, 2009 12:11:54 PM
not working for me.. I used NTE3122 phototransistor.. 1 megaohm resistor between pin 3 of IC1 and ground.. tried with and without R6.. all the parts I used are the same as in the list except 2N2222, unfortunately I can't find them here in montreal so I tried PN2222 and 2N3904.. I don't know if the problem is from the transmitter or receiver.. but when I touch the phototransistor pins with a jumper, as soon as I release this jumper, the relay receive a pulse and it activate for a short time, but doesn't stay on.. I also tried many different IR leds on the transmitter..
Nitin
Circuit Diagram
Saturday, December 06, 2008 3:37:03 AM
I have a car which moves forward and back word dirction. But now problem is that it could go backworkd direction the technical details of car as Circuit No JM67 using transistor No. S8050 S8550. can help me regarding circuit diagram of the same, please.
Tim Mottram
Infa-Red Remote Control
Friday, December 05, 2008 7:12:25 PM
Hi im trying to build a simple IR remote which sends a short pulse to a receiver, which in turn will send a signal to turn a motor. At the moment i have a debounced switch sending a signal to an IRED. I was then thinking to use a phototransistor (incorprated in a common emitter amplifier) to drive a motor. The circuit here look really good but is more complicated that i invisaged it would be. Can you tell me if there is some thing im missing? Thanks, kind regards. Tim
abaza
Infa-Red Remote Control
Saturday, November 15, 2008 12:44:52 PM
the circuit work with me well u have to 1-There shuold be a 1 megaohm resistor between pin 3 of IC1 and ground. 2-no r6 3-i test it on cd small motor i donot test it on relay
anonymous
Infa-Red Remote Control
Saturday, November 01, 2008 9:23:55 AM
I tried it but it dnt worked so please dont waste your money
edward
Infa-Red Remote Control
Sunday, October 26, 2008 12:05:57 AM
i already read some comment, they said not working this circuit, but i'll try to build this circuit to prove what they said, i will try my best what's the lack of this circuit....
tiku
Infa-Red Remote Control
Monday, September 15, 2008 12:21:28 PM
it was a waste dont try this circuit, i ve given up....
anonymous
Infa-Red Remote Control
Thursday, September 04, 2008 2:33:44 PM
I tried it sometime ago but it seems that it will not work because something is really missing!!
jaiganesh
Infa-Red Remote Control
Friday, August 22, 2008 8:02:53 AM
this circuit is not working!!!!!!!!!!!!! plz don't select this one.... this is waste
Amin
Infa-Red Remote Control
Sunday, July 20, 2008 1:05:44 AM
So, Who can give me a better circuit or how to say corrected circuit?!
anonymous
Infa-Red Remote Control
Friday, June 27, 2008 8:11:53 AM
will this circuit work ?? after buyin components if it does't work its a ;loss for me so pllll inform whether the circuit is verified or no
Sumedh
Infa-Red Remote Control
Wednesday, June 25, 2008 7:19:14 AM
The Q-3 in the circuit diagram is not symbolisedas it should be. This will be confusing for beginners.
stephen munene
Infa-Red Remote Control
Monday, June 23, 2008 4:20:54 AM
tested and not working i also need such to control a stepper motor
anonymous
Infa-Red Remote Control
Monday, June 02, 2008 12:46:36 PM
This wont work!!!!!!!!!
Luis
about 1Mohm resistor
Saturday, May 24, 2008 12:17:56 PM
You said that there's an error: there should be a 1MOhm resistor between the between pin 3 of IC1 and ground. But this resistor has to replace the capacitor C2 or how can I correct the error you said ? Hi from mexico.
sangeeta singh
Infa-Red Remote Control
Tuesday, May 13, 2008 12:39:12 PM
i have chosen it as my minor electronics project i have realized it but did not able to make it work .can u suggest me some reason why?
shaan
Infa-Red Remote Control
Friday, May 09, 2008 5:50:12 AM
what is rating of phototransistor where should R(1Mohm ) connected
shaan
Infa-Red Remote Control
Tuesday, May 06, 2008 11:52:13 AM
sir you have not mention the rating of npn phototransistor, & any alternative for spst switch
Carlos
Doubt about 1M resitance
Friday, May 02, 2008 2:55:23 AM
the 1M resitance between IC1 and ground replace the capacitor?? or I just have to add it'?? I can't make it works.
aditya
Infa-Red Remote Control
Thursday, May 01, 2008 5:03:58 AM
how to find the maximum range of ir remote i.e. how to find the maximum diatance betwwen ir transmitter and receiver?
maatt
Infa-Red Remote Control
Wednesday, April 23, 2008 1:43:38 PM
my mate is trying to take credit for this as his own, i was wondering if you had copyright or not,, so i can stop him muwahhahahahahhahaaaaa
aonanonymousymous
Infa-Red Remote Control
Sunday, April 20, 2008 9:42:56 AM
Hello - does anyone have a circuit board layout for these two schematics?
Alex
Infa-Red Remote Control
Friday, April 18, 2008 8:56:33 AM
Hey I have been searching all over the web for lists of simple schematics, and I stumbled upon your website. I am trying to automate my room, and I need to be able to control many (something like 5-10?) things from one remote. Is there any way to adapt this model so that I dont have to build 10 of each the transmitter and the receiver? Please email me if you have any suggestions or if you already have the schematics. Thanks in advance.
Joe Quarandoanonymous
Infa-Red Remote Control
Monday, April 07, 2008 7:53:40 PM
Question: Will an IR Receiver detect a deflection of an object passing through the transmitter and if so, what is the maximinum/minimum distance required between transmitter and receiver? Thank you, Joe Quarando
sidharth
Infa-Red Remote Control
Saturday, April 05, 2008 8:54:27 AM
I tried this circuit 4 times but it isn't working
Mike
Infa-Red Remote Control
Thursday, March 27, 2008 12:03:16 PM
Hi, I was wondering, i have replaced the op amp chip to a LM741CN and also used a matching infrared transmitter and receiver, as apposed to a NPN photo transistor and an infra red LED. Will theses changes effect the circuit?
nsblenin
Infa-Red Remote Control
Wednesday, March 26, 2008 4:31:14 PM
hi. i'd rather to know if i can control the motor speed. why there are some capacitos and transistor i the emiter circuit?? can't you put a simple batery and a pushbutton with the ir led? can i conect the led to a pwm signal to control the speed? can i substitute the relay for a transistor that turn on the motor? (i think that if there is a high freq. the relay won't work properly, isn't it) what transistor should i use? how far can it work? a lot of thanks
anonymous
Infa-Red Remote Control
Tuesday, March 25, 2008 8:38:29 AM
does anyone have a pic you can post or send me? I want to build this thing, however, I am a novice and dont know to much about this stuff.
sahil Alaracu
Where can I buy required Components for this Project (Circuit)?
Wednesday, March 19, 2008 6:02:37 AM
Dear Sir/Madam I have chose to make this infrared remote control for my electronic project. I Was interested in knowing the Place or a website address from where I can buy electronic components require do built/Make this project. I will be appreciate if anyone can reply to my email address and help me. Thank you
Alex
Infa-Red Remote Control
Monday, March 17, 2008 5:24:34 PM
How far can this device reach?...and there is no UV interference from the light or sun, isnt it?
Razman
Infa-Red Remote Control
Saturday, March 15, 2008 2:44:53 AM
i want know what types of npn phototransistor you used...i don't know which type to use?
rahul singh
Infa-Red Remote Control
Thursday, March 13, 2008 3:41:21 AM
i can't find Q3- 2N2907 please sujest some alternative.
Ivica
Infa-Red Remote Control
Wednesday, March 12, 2008 8:26:48 PM
Can you tell me the working range of the device and tell me how can I use the same transmiter for 2 or more receivers but on another channels (different button for each receiver)? Does the C1 and R1 define the channel (frequency) on the transmiter? Many questions sorry :( Please e-mail me.
fortytwo
Infa-Red Remote Control
Sunday, March 09, 2008 9:19:03 AM
I am with Joel i am really looking for this circuit with 2 functions. up and down ANY help would be appreaciated to get a project off the ground. FortyTwo
daniel
Infa-Red Remote Control
Monday, March 03, 2008 4:13:53 PM
sir what is the function of IC1 and IC2 on the receiver side can u explain more about tone decoder function please mail me please
Manuel
Infa-Red Remote Control
Sunday, February 24, 2008 4:52:23 PM
I have a problem yesterday when posting resistance 1M works perfect this morning just touch the R6 and damage, did the same with the resistance but were not changes, burned some of the integrated?
rejith
Infa-Red Remote Control
Sunday, February 24, 2008 9:28:11 AM
@sumithra, they are dedicated chips which is similar to a microcontroller.Since they are company made, it is hard to get the datasheet i think. An easy way is to duplicate the remote control with an ordinary microcontroller
vincent
Infa-Red Remote Control
Saturday, February 23, 2008 10:32:19 PM
have not 1.5uF capacitor. You can use other values to substitute it..... like the 1uF also can.... but i got a question, i hope all of you can help me...the section receiver got +9v, -9v and ground.... How to connect??? and the error section, is capacitor substitute to the resistor or add one more resistor???
sumitra
remote control
Monday, February 18, 2008 5:45:01 AM
i woud like to know that the ic ta11835 which is used in tv remote controls is a microprosser or it is a micro controller. and block diagram of ic ta11835.please kindly provide me this information
zidan
Infa-Red Remote Control
Thursday, February 14, 2008 5:47:36 AM
how can i get the circuit of the 9 and -9 power supply easily
budee
Infa-Red Remote Control
Tuesday, February 12, 2008 5:39:00 PM
is great and easy to use
tejas
Infa-Red Remote Control
Saturday, February 09, 2008 1:20:23 AM
we are building a project which can control all the home aplliances using a single remote,from any where inside the house.is it possible to control all the devices using single ir transmitter.
joel
Infa-Red Remote Control
Wednesday, January 30, 2008 10:43:11 AM
what if i want to add to more functions? i want to have one for the incrementing function,decrementing and right or next selection function? what will i add or do to modify the diagram>? tnx ^_^
joel
Infa-Red Remote Control
Wednesday, January 30, 2008 10:35:16 AM
i can find any LM308 op amp ic is there any substitute?
diddy
Infa-Red Remote Control
Friday, January 25, 2008 11:54:25 AM
hi you know how you said there is a problem with the CCT that you need to put a 1 mego ohme resistor where about does it need to go
anonymousJack Gardner
Infa-Red Remote Control
Wednesday, January 09, 2008 12:31:03 PM
I am familar with communication devices. I use to be a 'ham'. You may ask me.
AIK
Infa-Red Remote Control
Wednesday, January 09, 2008 7:07:39 AM
locally I can't find the C7 = 1.5uF 16V Capacitor . is there any equevilant ????? plz any anser???
somya
Infa-Red Remote Control
Monday, January 07, 2008 4:25:26 AM
i m a diploma final year student n want 2 make project. now i m interested in dis circuit. may i know what is the use of this circuit??
Gordy
Infa-Red Remote Control
Sunday, January 06, 2008 6:15:24 AM
Hi,please could be so kind as to tell me how I can use infa-red to control model cars on 6vdc to 9vdc for indoors use as radio control gets in the way. Thanks Gordy
ihsan
Infa-Red Remote Control
Monday, December 31, 2007 3:26:57 PM
This cct. for one function how i can to do multi function
alisha
Infa-Red Remote Control
Monday, December 31, 2007 1:29:37 AM
wht abt the 9V supply to the ic? do i hve to build a separate power supply on the board?
MANJU
Infa-Red Remote Control
Sunday, December 23, 2007 10:26:23 PM
Is there a circuit for an IR remote control with 2 or 3 buttons at the transmitter but using only one receiver? This is to control a system with multi-function using an IR remote control that points at only 1 IR receiver.
MANJU
Infa-Red Remote Control
Sunday, December 23, 2007 10:24:57 PM
THE CIRCUITE GIVEN HAS ONLY ONE RELAY HOW CAN I MODIEFY IF I WANT TO USE FOUR RELAY
pratim
Infa-Red Remote Control
Friday, December 21, 2007 12:57:51 PM
to construct an IR based Remote Lamp Dimmer tell me more function and circuit
gopi
Infa-Red Remote Control
Friday, December 14, 2007 11:02:29 AM
what is the number of Q1 & LED1
gopi
Infa-Red Remote Control
Friday, December 14, 2007 10:53:19 AM
what is the number forq3&led1
the gunner
Infa-Red Remote Control
Thursday, December 06, 2007 3:51:26 PM
i want to have 16 buttons on the transmitter. Do you know about the sequential or combinatory circuit?
anonymous
Infa-Red Remote Control
Thursday, December 06, 2007 3:48:37 PM
I want to know the combinatory circuit of an infrared remote control
dropred333
Infa-Red Remote Control
Tuesday, December 04, 2007 10:09:24 PM
i need help, im looking to control my house lights from a infa-red or rf remote control. in this circuit it is using the LM308 but i cant seem to find one..is there a substitute i can use? or do you have any other circuits i can use for my project?
Gas mark 5
Infa-Red Remote Control
Tuesday, November 27, 2007 3:44:29 PM
Hi, looks like a nice circuit, I haven't tried it yet, but a bit like Aznil said, I want to have 6 buttons on the transmitter, is there any way of making it respond to them all in different ways or do I have to make 6 completly different circuits?
will
Infa-Red Remote Control
Tuesday, November 13, 2007 11:00:43 AM
did this circuit work for anyone? I haven't built it yet
Aznil
Infa-Red Remote Control - multi button
Tuesday, November 06, 2007 9:29:18 AM
Is there a circuit for an IR remote control with 2 or 3 buttons at the transmitter but using only one receiver? This is to control a system with multi-function using an IR remote control that points at only 1 IR receiver.
Nerdpride
Infa-Red Remote Control
Wednesday, October 31, 2007 9:04:27 PM
about what frequency do you get on the transmitter?
wajihudin
Infa-Red Remote Control
Monday, October 29, 2007 3:11:37 AM
How do the circuit Operate??
Kapil
Infa-Red Remote Control
Sunday, October 28, 2007 3:35:34 AM
What is the max range achieved by given ckt? what alterations i need to made to increase d range significantly.
tarun viswas
Infa-Red Remote Control
Saturday, October 27, 2007 5:30:14 AM
it's more convenient to make & more practical
Andrew Kerr
Infa-Red Remote Control
Thursday, October 25, 2007 2:37:24 PM
Hi sir how are u??? i was wondering if this circuit would work for a remote control motorised window blind,it will be bascailly be going up and down and the blind will be tilting the angle occording to the light,could you give me more information on the receiver,sensor,transmitter,,,thank you hope to hear from you soon
chand N S
Infa-Red Remote Control
Thursday, October 25, 2007 10:16:04 AM
Sir, Circuit is simple. I need to cover 80 ft distance with IR beam to use as anti theft barrier. Can you please suggest possible alterations need.
nelson
Infa-Red Remote Control
Wednesday, October 24, 2007 11:45:45 AM
hi sir, i am doing a robot that can follow the signal send from the infrared. can sir send the infrared transmitter and receiver circuit diagrame to my email pls... Thz a lot!!!
swapnil ghodke
Infa-Red Remote Control
Friday, October 19, 2007 12:48:20 AM
Please tell me about the working of IR remote control, and tell the advantage of this. what is the difference between the ordinary remote and IR remote
Jun
Infa-Red Remote Control
Saturday, October 13, 2007 2:31:36 AM
Sir, really want to know how to make wirsless transmittes and receiver for my toys, but i dont have an idea how to make it. Can you suggest me someone who has a simple circuit of it? thank you
matt
Infa-Red Remote Control
Wednesday, October 10, 2007 9:13:01 AM
hi i am looking for an inrfa red switch and found this. does this cirucits work. could u send me an email and explain it down to component level how it works many thanks Matt
ATANU
Infa-Red Remote Control
Monday, October 08, 2007 8:07:23 AM
This circuit doesn't have high range.
karodioula
Infa-Red Remote Control
Saturday, October 06, 2007 9:44:06 AM
LM308 Op Amp IC ?
vedavyasa Paramahamsa
Infa-Red Remote Control
Wednesday, October 03, 2007 1:14:56 PM
Tell the brief discussion a bout the IR remote control and working of each part in the circuit like resistors, capacitors, resonators, semiconductors (ICI) etc.
Rakesh Kurmar
Infa-Red Remote Control
Sunday, September 30, 2007 3:08:41 PM
Sir, We want 2 know circuits & functions of 2-channel IR-remote. Fact is that it must have 5 different operating keys(eg- one for steering,another for accl, other for lights,breaks,for horn..... ). Please send us these infos URGENTLY because we are just waiting to complete our college project.
vEDAVYASA pARAMAHAMSA
Infa-Red Remote Control
Thursday, September 27, 2007 11:48:52 AM
Please tell me about the working of IR remote control, and tell the advantage of this. what is the difference between the ordinary remote and IR remote
rodel
Infa-Red Remote Control
Wednesday, September 26, 2007 9:44:29 AM
sir can u show the circuit diagram of a remote control door lock???
anonymous
Infa-Red Remote Control
Sunday, September 23, 2007 10:10:45 AM
can i know is it an amplitude-shift-keying(ASK) application here.? i need it tx and rx with ASK application circuit.. HELP~!
karthik
Infa-Red Remote Control
Tuesday, September 18, 2007 9:48:04 AM
please please give me a ckt of multichannel sellection its verry urgent sir, iam doing project please dont ignore!!!!!
raj
Infa-Red Remote Control
Sunday, September 16, 2007 12:52:56 PM
i have tried with the above circuit but it does not work i have checked the drawing thoroughly but it still does not work.
nandhu
Infa-Red Remote jammer
Saturday, September 15, 2007 5:53:03 AM
ur remote jammer doesn't have any impact in jamming.pls suggest some tips about the pins of the transistors
david
Infa-Red LED circuit (Transmitter and Receiver)
Friday, September 14, 2007 2:37:34 AM
currently i m working on my final project. i want to construct a circuit consists of IR LED (Tx n Rx). i use 5v to activate the IR. so that Tx would transmit signal to Rx. i also use BJT ( NPN) and 3 resistors( 2 100ohms and a 220 ohms). from point Collector to ground, it supposed to have 5v . i already got that .the circuit also suppose to have a change in Voltage by the value of 5V will decrease whenever i block the Tx with a paper etc. but it didn't. could u please help me, perhaps provide me with a complete circuit.plz
anonymous
Infa-Red Remote Control
Tuesday, September 11, 2007 8:55:29 PM
it will not work
anonymous
Infa-Red Remote Control
Tuesday, September 11, 2007 9:51:35 AM
im trying using multisim...hot to find "LM308 Op Amp IC" and LM567 Tone Decoder..i already search but not found...
raaj
wireless remote
Thursday, September 06, 2007 10:25:09 AM
hi there..i'm currently doing a project which is a hovercraft... but i got some problem at the circuit part... i would like to have the wireless remote circuit... for transmitter and also receiver.. thanks..
Seyi raheem
Infa-Red Remote Control
Wednesday, September 05, 2007 10:12:07 AM
i need to get something more complex than this
KUNI
Infa-Red reciever and transmitter circuit
Tuesday, September 04, 2007 11:29:41 AM
sir i like to know how transmitter and reciever circuit are design and they schematic drawing
chikanos
Infa-Red Remote Control
Sunday, September 02, 2007 2:24:00 AM
thank you sir but i need something more interesting. im working on multifunction of infrared remote control. can u send me any information about it? thanks...
Muazu musa jibrin
Infa-Red Remote Control
Saturday, September 01, 2007 12:37:10 PM
I will Insha Allah test this circuit today.But how many distance will be effective? How can I send my personal circuits as my contribution to this great site? I need an electronics version of the rules of this site. Iam expecting your reply.
abdo
Infa-Red Remote Control
Friday, August 31, 2007 3:15:49 AM
sir i want more full information about how ican built ir remote control for lights show me circuit and aver thing about it.
red knight
Infa-Red Remote Control
Monday, August 27, 2007 10:36:55 PM
the ckt is cool but i am just new in this world can you elaborate more about the configuration of the IC2 the tone decoder
Thabiso Mbele
Basic transceiver circuit
Sunday, August 26, 2007 6:51:32 AM
I'm transmitting a 5kHz signal using 555/AT89C51 IC's and at the receiving end I'm using a LM567CN (wire connection).Can you give me a detailed circuit diagram of the above,also a simple test circuit of the 567 IC and how it works or how can you see that it has detected the reqired freguency or not.Your respond to this reguest will be appretiated with my outmost intergrity,thank you!!!.
anonymous
Infa-Red Remote Control
Saturday, August 25, 2007 10:26:41 AM
Hello, i used that I/R design to control an electrovalve but it didnt work the light affected the sensibility
osinaka onyevu
Infa-Red Remote Control
Monday, August 20, 2007 11:38:33 AM
i want to know how i can switch different appliances with different code numbers using infrared beam or tap switches
subrato kundu
Infa-Red Remote Control
Sunday, August 19, 2007 3:13:53 PM
Sir i need the circuit diagram of infra-red remote control such that i need more detailes about that circuit diagram
ingenious
Infa-Red Remote Control
Saturday, August 18, 2007 12:41:38 PM
hi sir, it being a very interesting programs, and simple indicatin of the component with easy design of this circuit, it act as another motive of help my electronic effectively work bench to improve even to peak a chanllenge
ankur
Infa-Red Remote Control
Thursday, August 16, 2007 6:00:00 AM
sir this information helps me lot but i want more information about infrared remote controlled switch,sir please send me important note on IR remote controlled switch on my email address the things that i want to are as follows 1)application 2)working 3)objective 3)components used 4)where it is used commonly I hope that you will help me out I want your replay tomorrow only because 18-08-2007 is last date of my project THANK YOU,SIR
anonymous
Infa-Red Remote Control
Wednesday, August 15, 2007 9:41:57 AM
I see the acknowledgement of the error about the missing 1M resistor. Is it possible to modify the schematic to show the added resistor?
nagdasaeed
Infa-Red Remote Control
Wednesday, August 15, 2007 9:20:46 AM
pleas help me in my project to design infrared remote control with 555 timer as an ociullator
Mohsin
Infa-Red Remote Control
Tuesday, August 14, 2007 5:39:52 AM
the circuit is indeed very good but there should be more points in the notes that elaborate its function.
suresh kumar
Infa-Red Remote Control
Friday, August 10, 2007 9:09:37 AM
hi sir this is such agood page and it is very useful for me to continue my project.. thank u for the team... and we want u to continue this dedicated work.... once again thank u.
joseph
remote controlled switch
Tuesday, August 07, 2007 9:44:23 AM
sir i would like to get information about a remote controlled switch which can work in 220 v both transmitter and receiver.....please help
anonymous
general remote controll mechanism
Sunday, August 05, 2007 4:09:30 AM
Sir, I want to know a general working of remote controll. Its transmitter and reciever.. . WOuld you pls help me know this with appropriate circuit diagrams...??
anonymous
Infa-Red Remote Control
Sunday, August 05, 2007 3:56:03 AM
sir plz send me the schematic diagram of an IR remote control.tnx!
sasikumar
Infa-Red Remote Control
Wednesday, August 01, 2007 8:26:41 PM
i need infa-red remote control more than 10 in/out put control digram ( transmeter and receiver ) any one send me my mail thanks
karthik
Infa-Red Remote Control
Tuesday, July 31, 2007 7:31:15 AM
sir , i am a pre final year student ,in our coll we are doing mini proj can i have a circuit that works for 2 controls thro i r and recieving that 2 controls and works independently please help me sir !!!!!!!!!!!
Arun
Infa-Red Remote Control
Sunday, July 29, 2007 12:16:58 AM
I need the circuit diagram of infra-red remote control such that there r two or more SPST push button switches..... and also i need more detailes about that circuit diagram ......
jessa
remote controlled lamp dimmer
Saturday, July 28, 2007 3:21:20 AM
hello, your page is amazing!!!This would be a great help for the student!! i've seen your page and this is a big help for my project!!!can I request for your help sir????pls....about my project---i'm finding a schematic diagram about remote controlled lamp dimmer since this topic is quite similar to my project!!!Can it be possible to use infa-red remote control to control the lightness of the lamp???pls do help me!!!! I can't graduate without this project!!!What possible solution can I do........thanks...
rajesh
Infa-Red Remote Control
Thursday, July 26, 2007 1:04:34 AM
we want to do project on infr-Red remote control.
anonymous
Infa-Red Remote Control
Tuesday, July 24, 2007 7:09:05 AM
SIR I want to on any pin of microcontroller when infra red sensor senses temperature wat should i do in this case kindly tell me in detail about infra red sensors
C.Mitra
Infa-Red Remote Control
Sunday, July 22, 2007 2:37:32 PM
There is a mistake in the notes section of the circuit. Connecting a 1 meg resistor between Pin3 and ground is going to pull the output of the IC to ground and make the circuit useless. The proper procedure is to create a voltage divider using two 100K resistors across the power supply and connect the centre tap of this to Pin 3 of the opamp, this way we can bias the IC to get half supply voltage at the output and to provide the maximum voltage swing. Also, abetter option would be to use a bistable circuit so that the circuit remains ON indefinitely until the transmitter sends another signal to switch it OFF.
anonymous
Infa-Red Remote Control
Sunday, July 22, 2007 2:13:08 AM
i have a problem, how will i connect a sleep timer device on a IR remote control as well as on the receiver side so that it will function effectively,tnx!i hop u can help me.?
ren
Infa-Red Remote Control
Friday, July 20, 2007 10:38:48 PM
is this project really works?
Smuffle
Infa-Red Remote Control [auto-lock spot light]
Friday, July 20, 2007 7:20:06 AM
Hello Sir, im an engineering student, and would like to help out on my current project, w/c is I propose a autolock spot light, this spot light will auto aim the target buy using infa-red. Can you be my adviser about this? I want to know how to build that. Can you e-mail me some circuit diagram? Thank you very much in advance and more power!
DAVID OROK
Infa-Red Remote Control
Thursday, July 19, 2007 11:56:40 AM
Gud day sir, I wud like 4 u 2 send 2 me an IR remote control diagram dat will not b affected by bright light. Tanx alot.
J0hNy
Infa-Red Remote Control
Wednesday, July 18, 2007 11:44:14 AM
Hello. Does anyone have the PCB of this circiut? If you have pls send me. THNX
priya
Infa-Red Remote Control
Wednesday, July 18, 2007 6:25:39 AM
sir i want to do mini project on infa red remote control. can you send me the details about that & circuit diagram.
Pugazhendiran
Remote control
Tuesday, July 17, 2007 12:42:22 PM
i need some other simple Remote control circuits.Plse send it for mine use. The circuits you have presented in websites are nicve. P.Pugazhendiran. Lecturer/EEE
kraken
Infa-Red Remote Control
Sunday, July 15, 2007 3:08:46 PM
Sir,can i replace lm 308 with lm 741??
anonymous
Infa-Red Remote Control
Friday, July 13, 2007 1:27:28 PM
thnks a lot sir
Maamoon
Infa-Red Remote Control
Friday, July 13, 2007 10:49:53 AM
Hi,Thanks a lot for this great site. I'd like to get a remote control with a minimal pwoer consum. i am doing a privat small project and I need your help. How to get a remote control circuit withe 3 volt supply with a duratin of 2 months working with out accidental activations.
Laban
Infa-Red Remote Control
Friday, July 13, 2007 3:02:19 AM
I would like you to help me with theory about the Tone Decoder,and its purpose in the receiver circuit.
shahid
Infa-Red Remote Control
Friday, July 13, 2007 2:09:16 AM
i have seen ur pro i like it but i want more information about it i want to make such type of device which control any electronic device.... plz contact wid me
John Disilwa
Infa-Red Remote Control
Wednesday, July 11, 2007 7:33:43 AM
Hello Sir!! First of all its a very nice project. But there are some queries remaining in my mind. It is considered that this project may not work due to sunlight. Is there any other option so that we can operate this project in sunlight. Can we use high intensity laser light instead od LED ? Hope you will clear my queries clearly... John
reden
Infa-Red Remote Control
Tuesday, July 10, 2007 8:24:50 PM
gud am... sir, can i ask you this question.... please....what part of the transmitter circuit that will produce the tone? Im very curios.... SIr , if you have the pcb layout of this schematic diagrams can you send it to my email add.... Tnx sir.... I will wait for your favorable response.... Thank you once again....
MUTSIVHLUI AZWIFARWI
PC Infa-Red Remote Control
Tuesday, July 10, 2007 10:06:16 AM
Hello.. I am a student here @ South Africa.I'm doing some more research on PC Infa-Red Remote Control and i'm looking for the circuit diagram.Can you please send me one if you have. Thank you
Walysson Tangrins
Infa-Red Remote Control
Monday, July 09, 2007 12:10:57 PM
can anyone send me a project of two canals contrller?
suresh
Infa-Red Remote Control
Monday, July 09, 2007 3:56:22 AM
i need more IR based different circuits
Pugazhendiran
Infa-Red Remote Control
Saturday, July 07, 2007 4:38:54 AM
Infa-Red Remote Control circuit i have seen in your website was good.Can send more circuits related to Home security systems amd Water purifier.
Leon
Distance & TSOP
Thursday, July 05, 2007 7:29:02 AM
I want to built a set of mutiple receivers wich can be activate by one transmitter. My question is if i can use a TSOP1738 as photo transistor because it has a good receiving range. Or can anyone tell me what the operating range of this receiver wihout the TSOP is.....
saei
Infa-Red Remote Control
Tuesday, July 03, 2007 5:15:55 AM
Have anyone the PCB of this circuit. If somebody have pls send me. THNX
anonymous
Infa-Red Remote Control
Tuesday, July 03, 2007 12:13:41 AM
i wanna make a infrared toy car motor controller...will dis work????????
chris
Infa-Red Remote Control
Friday, June 29, 2007 9:53:54 AM
This project is great!!!.the infa transmitter just emit 1 chanel.
sunny
Infa-Red Remote Control
Thursday, June 28, 2007 1:08:24 PM
sir, m new to the subject. i have queries like what is tone decoder? n other. will u please send me some tutorial pages regarding how to make wireless robot, setting transmitter and reciever.ec. grateful to u........
Johneee999
Infa-Red Remote Control
Saturday, June 23, 2007 10:12:43 AM
Have anyone the PCB of this circuit. If somebody have pls send me. THNX
anonymous
Infa-Red Remote Control
Sunday, June 17, 2007 12:19:44 AM
can we use ultrasonic instead of IR since there is a possibility of detecting the IR radiations from the sun?
Leandro
Infa-Red Remote Control
Friday, June 15, 2007 7:39:25 AM
Is there some substitute for the lm308?It is too rare and expensive!.....please help me! 8-(
anonymous
Infa-Red Remote Control....
Wednesday, June 13, 2007 10:29:11 PM
which npn phototransistor should i use?is it all tested by u?does it really works or i m making any mistake....plz sir kindly inform me as it is my project
Mhlanga MindlosZim
Infa-Red Remote Control
Wednesday, June 13, 2007 12:45:57 PM
thanks u doing a greeaat job....................
anonymous
Infa-Red Remote Control
Monday, June 11, 2007 2:16:12 PM
Hi, i wank understand how to work the transistors in the transmisor cirtuit. The circuit is very cool. Finally what is the maximum scope of this circuit. Please Help me!! Thanx
Bayu
Infa-Red Remote Control
Sunday, June 10, 2007 11:46:21 AM
Please give me the electronics circuit for this control
jide
Infa-Red Remote Control
Saturday, June 09, 2007 8:46:27 AM
pls i need some clues on a remote controlled lighting swith
uzumaki
Infa-Red Remote Control receiver
Thursday, June 07, 2007 6:00:12 AM
i want to make infra red remote control receiver shcematic for sony triniton vega tv, but i dont know how to make it. many kinds of schematics, but i dont know which one is correct.
amilind gaonkarnonymous
Infa-Red Remote Control
Tuesday, June 05, 2007 9:49:32 AM
i want to connect 10 touch switch to PIC 16F84.my project is IR remote control & receiver.i require assembly prog for operating the touch switches.can any body help me.
AMIN
Infa-Red Remote Control
Saturday, June 02, 2007 7:51:28 AM
THANKS
Pipo
Infa-Red Remote Control
Friday, May 25, 2007 10:51:12 AM
but this circuit have only one chanel and i like to see a circuit qith 12 chanels
FACA
Infa-Red Remote Control
Thursday, May 24, 2007 3:38:57 PM
hello I am making a project and me top with this page and my question is the following one if I can replace the infrared with a trasmiter/radio receiver Frequency. Or that I must arregar to him to the circuit for that function.
anonymousms.sivakumar
Infa-Red Remote Control
Tuesday, May 22, 2007 10:46:05 AM
maximum distance between the transmitter and receiver
Hani
Infa-Red Remote Control
Thursday, May 17, 2007 8:59:59 PM
hi i wanted to know how we can interface an IR remote control with 89c51 for controlling various outputs
tasneem
Infa-Red Remote Control
Thursday, May 17, 2007 11:13:05 AM
I've implemented this circuit,but for some reasons its not working........whta can be the possinle ways of troubleshooting it? what is trhe range of this circuit?plz tell me the type of npn phototransistor that can best fit the needs of this circuit. also if u can exaplin its working a little,i shall be very grteful...thanx
anonymous
Infa-Red Remote Control
Monday, May 07, 2007 5:19:51 PM
merci
Rohit
Infa-Red Remote Control
Sunday, May 06, 2007 11:59:26 PM
Hi, This circuit is really cool.I made it 2 channel by using two lm567 , one photodiode and two ic741 .but its range is too low.Again i made it with ir receiver(tsop1738).Its rang is good but it is also disturbed by other remote.can we increase the rang of photodiode. Please suggest me .
pealtorto
Infa-Red Remote Control
Thursday, May 03, 2007 7:36:16 AM
DARSHAN. if you want to change this remote into a two channel one look in the forum. I started one on this topic and it has all the changes that need to be made to the circuit
Hana
Infa-Red Remote Control
Wednesday, May 02, 2007 5:17:10 PM
This is cool controller. I am looking for PIC controller for my LED custom desing for my project. It is almost like something here http://www.lunaraccents.com/applications-LED-automotive-lighting.html http://www.lunaraccents.com/nav-custom-LED-lighting-applications.html but not exact the same !!
anonymous
Infa-Red Remote Control
Wednesday, May 02, 2007 5:08:27 AM
hello..may i know what is the funtion of IC-1 and IC-2 in the circuit.. tQ
Teacher
Multi channel Infa-Red Remote Control
Monday, April 30, 2007 5:07:00 PM
I am a middle school teacher who has written a Powerpoint Jeapordy math/ science game. I want to create a score board with one light for each student. The score board will light up for the first student that presses thier remote, I then want to have a master remote, that lets me re-start the score board..I have been looking all over the place and can not find anything that will do this. Is there anything like this or do I need to create it myself?
sameer
Infa-Red Remote Control
Monday, April 30, 2007 10:44:24 AM
There is an error in the schematic. There shuold be a 1 megaohm resistor between pin 3 of IC1 and ground. This provides a 0 volt reference to bias the IC. Please Explain it completely
sameer
Infa-Red Remote Control
Monday, April 30, 2007 10:42:51 AM
plz give detail working of transmitter & receiver diagram.
darshan
Infa-Red Remote Control
Monday, April 30, 2007 3:20:53 AM
hi.i was just on the path of searching to control a toy(hand made) by remote control.i found it because of 'U'.a great THANKS to u. i have question:CAN WE CONTROL TWO MOTORS OF ONE 9V & OTHER OF 3V?. IF SO INFORM ME THE CHANGES THAT HAS TO BE DONE IN THE CIRCUIT. waiting for ur valuable reply.Once again Thanks a Lot!!!
anurag
Infa-Red cordless headphone
Thursday, April 26, 2007 9:04:52 AM
we have to know that what is the rating of audio output transformer used in infra-red cordless headphone
anonymous
Infa-Red Remote Control
Tuesday, April 24, 2007 11:33:29 AM
I also want to made a circuit in which i interrupt a Infrared LED. After interrupting a relay switch is on and off and on a output i want 12 v D.C voltage. Plz send comments
anonymous
Infa-Red Remote Control
Saturday, April 21, 2007 5:35:25 AM
I have an AC of DIAKOOL in my room and have lost its remote can I control this with that circuit.

(Editor's notes: No.)

Tarak Maji
Infa-Red Remote Control
Saturday, April 21, 2007 5:00:53 AM
What is the operating frequency? what is the alternate transmitter and receiver pair and the working of this circuit.
mahmoud
Infa-Red Remote Control
Friday, April 20, 2007 10:46:39 AM
THANKS for this project i will try it and reply for you
anonymous
Infa-Red Remote Control
Sunday, April 08, 2007 6:47:17 AM
hey guys in the IC1 There is no mention about the pin 5.What should be done for that pin..Pl reply immediately

(Editor's notes: Search the forum.)

Tibaijuka Richard
Infa-Red Remote Control
Wednesday, April 04, 2007 10:17:37 AM
Hi?,Thanks very much for putting in place such services for students like us.Mine is not a comment rather it is an Inquiry.I would like to inquire whether such a system can work as a system controlling temperature settings of a device like an A/C(Air Conditioner).If not which other system/alternative can be employed for the above(A/C). Your reply will make me purr with happiness!! Thanks
udhaya kumar
Infa-Red Remote Control
Monday, April 02, 2007 7:09:48 AM
i want to know the description of the process and i need more informarmation about the transmitter how it emit the signals (i.e) what operation is takes place and how the receiver recevies the signal
RIntu
Infa-Red Remote Control
Sunday, April 01, 2007 2:40:14 PM
Hi, Can u pls let me know the future use of IR remote Control.
anonymous
Infa-Red Remote Control
Thursday, March 29, 2007 12:36:37 AM
i want to know about the constructional detail of the ir remote control
zaheer
Infa-Red Remote Control
Tuesday, March 27, 2007 10:45:12 AM
i want to make multi channel infrared transmitter receiver circuit, which generate different frequency at different botton, pls give me some idea or schematic.
nasir leghari
Infa-Red Remote Control
Monday, March 26, 2007 1:24:21 AM
i love this circuit . and specially who made it so simple.
ismail mazighi
Infa-Red Remote Control
Saturday, March 24, 2007 1:01:55 PM
saminformations about receptor LTM8848
mazighi
Infa-Red Remote Control
Thursday, March 22, 2007 1:16:30 PM
s.v.p donnez une generation pour microcontroleur
anonymous
Infa-Red Remote Control
Thursday, March 22, 2007 9:35:07 AM
Try using a PNP transistor from pin 8 of the 567 to provide a ground for the relay.
Josh
Infa-Red Remote Control
Wednesday, March 21, 2007 3:46:06 PM
pls i need more about how it works and its design and construction
vivek kumar jha
Infa-Red Remote Control
Tuesday, March 20, 2007 1:02:13 AM
your circuit is not working you should change somthing i thing there resistor is some problem there no voltage drop as reqried to drive the relay . yuo have to trobulesoot and give the proper circuit
BUSRAN
Infa-Red Remote Control
Monday, March 19, 2007 8:22:25 PM
-. plz give detail working of transmitter & receiver diagram. -. may i know how long is the distance that the transmater can tragge the receiver??? thank you very much best regard yahya
rk
Infa-Red Remote Control
Sunday, March 18, 2007 5:48:44 PM
hi does this circuit work with an ir detector like tsop113
abu baker
Infa-Red Remote Control
Thursday, March 15, 2007 11:43:09 AM
i want to make a protection circuit to my mobil phone and switches this circuit by using the IR
anonymous
Infa-Red Remote Control
Thursday, March 15, 2007 10:51:42 AM
plz give detail working of transmitter & receiver diagram.
anonymous
Infa-Red Remote Control
Thursday, March 15, 2007 2:29:53 AM
i want how application demonstrated of ir transmitter and receiver
ISMAIL MAZIGHI
Infa-Red Remote Control
Wednesday, March 14, 2007 5:39:16 AM
I WANT TO HOW TO PROGRAME FOUR ORDER INTO THE IC IRRC
anonymous
Infa-Red Remote Control
Monday, March 12, 2007 11:45:33 AM
how far is the distance. I need 10-15m
Yahya
Infa-Red Remote Control
Sunday, March 11, 2007 3:23:28 PM
hi every body may i know how long is the distance that the transmater can tragge the receiver??? thank you very much best regard yahya
Randolph
Infa-Red Remote Control
Friday, March 09, 2007 6:37:09 AM
What Number do the NPN Phototransistor? can i use any ? sample BPW85 Silicon NPN Phototransistor And how do i wired the Relay? a relay i have is 6V as you mension and having a 5 Pigtail which two i connect to?
ariz
Infa-Red Remote Control
Friday, March 09, 2007 3:35:22 AM
why this device dont work pls........ reply if you recieve this comments thnks.
Eduardo Serdoch
Infa-Red Remote Control
Tuesday, March 06, 2007 1:17:34 PM
Why LM308 ? Why not LM 301? Itīs cheaper than LM308!!
Sajgon
Infa-Red Remote Control
Monday, March 05, 2007 2:10:56 PM
There is no precisely which NPN Phototransistor is in need! So,wich one?
keerthi
Infa-Red Remote Control
Sunday, March 04, 2007 11:18:08 PM
i need a description fot both the circuit
anonymous
Infa-Red Remote Control
Sunday, March 04, 2007 4:21:55 AM
you should fix that schematic

(Editor's notes: What's wrong with it?)

anonymous
Infa-Red Remote Control
Thursday, March 01, 2007 1:52:37 PM
very nice
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