Thanks Fleuver! The trails are most likely a side effect of using incandescent bulbs, so if you switch the LEDs with those tiny (older type) Christmas lights, that should do the trick. You may have to adjust the resistor and/or voltage. I'm not sure what voltage those run at, but I'm guessing it's less than 5v.
ps, I just tried, and you can make LEDs fade out by hooking up capacitors (about 100 uF or more for longer fade, 1 per LED), but I wasn't able to get them to fade on - they go on instantly.
Capacitors need to be tied across the + and -, so that would be in parallel with each LED, in essence connecting the two pins of the LED to the two pins of the capacitor.
I tried that at first, but it didnt work, then it dawned on me, I have to put a 1a101n or what it was called "one way only" in asswell, to lead the power to the LED,
I´ll besure to make a vid when its all done and mounted as I planned it
Actually, it's just one 7400 series 4-bit up/down counter chip (I can't recall which precise chip) that is activated by a 556 timer chip (which is just a dual 555 - there was a sale heh).
The output of the counter chip gets decoded using two decoder chips. The one other chip is a NAND chip to keep track of whether we're counting up or down. I'm pretty sure I have a high resolution picture of the circuit somewhere that identifies all the components that I can email you, just let me know.
i want to design something like this but i'm unfamiliar how to wire multiple decade counters together. Do you connect the each output to the clock input of another 4017?
'
it is hard to see red LEDs lights,,,
try turn off the light and see LEDs lights better to see
bestamerica 1 year ago
possible only has 2 s` in it :)
Fleuver 2 years ago
You rock, i have just copied your setup and build the scanner with almost all the components you describe on your wp.
It looks great, do you think its posssible to make the "fade" effect or "trail" or what you will call it, so the LED´s fades out as they are lid up
Fleuver 2 years ago
Thanks Fleuver! The trails are most likely a side effect of using incandescent bulbs, so if you switch the LEDs with those tiny (older type) Christmas lights, that should do the trick. You may have to adjust the resistor and/or voltage. I'm not sure what voltage those run at, but I'm guessing it's less than 5v.
thewestcoasthippie 2 years ago
ps, I just tried, and you can make LEDs fade out by hooking up capacitors (about 100 uF or more for longer fade, 1 per LED), but I wasn't able to get them to fade on - they go on instantly.
thewestcoasthippie 2 years ago
Nice I uploaded a video of it, looks just like yours :)
Do you put the cap´s in series or parallel with the LED?
Fleuver 2 years ago
Hehe very cool videos :)
Capacitors need to be tied across the + and -, so that would be in parallel with each LED, in essence connecting the two pins of the LED to the two pins of the capacitor.
thewestcoasthippie 2 years ago
I tried that at first, but it didnt work, then it dawned on me, I have to put a 1a101n or what it was called "one way only" in asswell, to lead the power to the LED,
I´ll besure to make a vid when its all done and mounted as I planned it
Fleuver 2 years ago
I could spend the circuit please
metallicaxsiempre 2 years ago
Actually, it's just one 7400 series 4-bit up/down counter chip (I can't recall which precise chip) that is activated by a 556 timer chip (which is just a dual 555 - there was a sale heh).
The output of the counter chip gets decoded using two decoder chips. The one other chip is a NAND chip to keep track of whether we're counting up or down. I'm pretty sure I have a high resolution picture of the circuit somewhere that identifies all the components that I can email you, just let me know.
thewestcoasthippie 2 years ago
i want to design something like this but i'm unfamiliar how to wire multiple decade counters together. Do you connect the each output to the clock input of another 4017?
xXposeidon29Xx 2 years ago
That must be multiple 4017 decade timers hooked together.
hydrolisk1792 3 years ago