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|I don't know why, but people like blinking lights. You see LED chasers everywhere, in TV shows (Knight Rider), movies, and store windows. This schematic is my version of a simple 10 LED chaser. There is no 555 timer used because at my local electronics store they are over $4 Cdn. Instead, an oscillator made up of two sections of a 4011 NAND gate is employed. This chip is very inexpensive and extremely common.|
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|I got metal circular disc (taken of old round café table) which want use as clock face. how can I convert above schematic to use on 60 led's? give you idea I place 60 leds (lets say white) round near edge of disc and want led 1 on and all leds from 2-60 are off for period of one second then when led 1 is off led 2 is on and all rest leds are off etc same as led 3 on leds 1,2, thru to 60 off. when gets 60th led minute led (lets say red) 1 is on with leds 2 thru to 60 off (just like seconds but at minute intervals. then when get hours lets say banks of 4 leds (say blue) 12 oclock set are on and all banks 1 thru to 11 off till next hour where 1 turned on and banks 2 thyru to 12 off any ideas please many thanks|
|I would like to know how to change this from just an LED chaser to an LED chaser manually operated and that stops randomly. Some type of push button to activate and once released continues for two to five seconds seconds and stops. I am supposing a push button with a timer be added. But I need to be shown where. The chasing LEDs can't start until the button is pushed and can't stop until it has timed out. Any help would be greatly appreciated.|
|is there any way to make the led chase counterclockwise then clockwise.. would like to know how to do that..|
|hey, i have a pretty poor understanding of how all this works and suck at the physics/technical aspects, however all that important stuff aside I really want to create this, however slightly modified. instead of having one led in each place, i want to attach a relay, and to this relay hook up say 10 leds, the idea being that i create something that looks like a dart board with the light 'rippling' out like the surface of water. was hoping for any advice as to how to do this all, i know it's ambitious for someone that is way out of their depth, i still really want to do it, any help that anyone could offer would be greatly appreciated i have just bought all the stuff listed here online, should be with me in the next couple of days|
|can you mail me the latest (improved version) of the circuit? because i want to make it for my workshop project.|
|I removed the section that uses the nand gates and attached a long wire to pin 14 of the 4017 and held it in the air and it worked!|
|hahahahahaha, you got detention for it not working?!? Your teacher is a stupid SOB.|
|this circuit failed me and i got a after school detention because it didn't work.|
|I dont know the first thing about any of this, but i need help; wheather itsLED, flourenscant, or aregular bulb set up, i need someones help. i needa setup that when i hit a switch, 5 to 7 bulbs turn on and the chase or blink or something. dont kow the first thing about it, im a 12 volt man, but usd all my options. email me if you can help, please, thankyou.|
|If you wish to use a 555 to replace the 4011, consider a CMOS version of the 555 as a; National semi LMC555, Maxim 7555 or TI TLC555. They use less power and do not require a capacitor couple across the supply.|
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