new to electronics and needing some guidance with a circuit . 555 LED lights - Circuits and Projects

RE: new to electronics and needing some guidance with a circuit . 555 LED lights

basilwatson — Wed, 09 Jul 2025 10:22:42 +0000

@ankunegi thank you thats very kind of you ! Stephen

RE: new to electronics and needing some guidance with a circuit . 555 LED lights

Admin — Wed, 09 Jul 2025 06:48:01 +0000

@basilwatson glad to be of help :) If you have any other doubts, feel free to reach out.

Answer to: new to electronics and needing some guidance with a circuit . 555 LED lights

basilwatson — Mon, 07 Jul 2025 22:23:43 +0000

@ankunegi Thank you that was kind of you, I had connected up the capacitor and tinker cad said "wrong way round " so I left them ,,, not knowing what I was doing ... Another "similar" circuit I have suggests 440 ohm resistors I will use your suggestion. Once I know the circuit works ..I have a safe point to retreat back to Once again thank you for taking the time to look at the tinkercad sim kind regards Stephen

RE: new to electronics and needing some guidance with a circuit . 555 LED lights

Admin — Mon, 07 Jul 2025 06:15:51 +0000

Hi! I checked the circuit on TinkerCad. There were some mistakes, like wrong capacitor connection and value. Here's the edited one: https://www.tinkercad.com/things/gcQTqIF5CTo-copy-of-sequential-led-circuit-?sharecode=yTHwZCX90Ez_konSMjxfFU2HUBSpN_a3AwnfDvg2BOM A couple of points worth mentioning here: 1. On running the simulation, TinkerCad shows too much current drawn from the IC and may damage it. 2. This is true if you are running it continuously. In this case, all LEDs are ON at the same time for a very small duration, so it somehow works. 3. Still, not a good idea in the long run. I will suggest: 1. Use a 220-ohm resistor instead of 100. And connect two LEDs per pin to only one resistor. Meaning a total of 8 resistors for an 8-pin. This will reduce the overall current draw from the IC and per pin as well. 2. Better use 330 ohm..but not that it will reduce the brightness of the LEDs further.

RE: new to electronics and needing some guidance with a circuit . 555 LED lights

basilwatson — Sun, 06 Jul 2025 01:10:55 +0000

@ankunegi Thank you Really appreciative of the reply. Interesting about "Ai" ,,,i asked it many times and the circuits I got back even I could see were Junk So here is the Tinkercad link ... No bread board, just in desperation , randomly joining things together to see if I get a response. https://www.tinkercad.com/things/8KM0gtZ2SP9-sequential-led-circuit-?sharecode=bBxZuQtCi6Ij17lLwW9QNU6HdWHhWPO3mI3HIlo7cOU I hope this link works .... Now bass usual for me ,,, I have probably , A; over looked the obvious ...B; done something stupid, Im looking forward to finding out .... My guess is Ive got the pins round the wrong way.... Thanks in advance Stephen

Answer to: new to electronics and needing some guidance with a circuit . 555 LED lights

Admin — Fri, 04 Jul 2025 05:57:09 +0000

Hi!
Welcome to the world of Electronics :)
Here are the answers to all of your questions:
1. It's not possible to generate circuits using AI(at least as of now).
2. Most of such circuits available online are copied from somewhere and then designed again. You will find a lot of circuits similar to each other online.
3. Can you trust these circuits? In most of the cases they are correct but it's better to simulate them first.
4. In you particular case, the LED chaser circuit that you shared is correct. I checked from beginning to end. Seems okay. Although, if you have a stable 5 V power supply, you don't need the regulating circuit(L7805 one).

Did you simulate the exact same circuit on TinkerCad? Can you share the design file here so that I can take a look.

new to electronics and needing some guidance with a circuit . 555 LED lights

basilwatson — Thu, 03 Jul 2025 10:26:23 +0000

Hi all

New here ...so please bear with, as I find the ropes , First let me explain. Quite a bit on the distant side of yoof. Am a mechanical engineer who has spent considerable time playing with motorcycles, So im familiar with the " basics", Now that computers and such simulation software has become more available ,,,I decided to "upgrade", and have been playing with circuits. However, I think Im into this a bit deep, I modelled a LED lighting circuit using tinkercad, things flashed ... but didnt work, Then I noticed there were many "similar circuits " on line.... Heres, the question; Are these "ai generated circuits?" are the "use-able? and if so what am I doing wrong,,, are these value for the components valid? Ive never used a 555 chip before and while I understand how it works ,,,ive never actually used on,,, Thank you in advance ,,,any help is gratefully received

Kind regards

Stephen

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