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Author Topic: LED Wiring question  (Read 686 times)

Offline whb64

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Re: LED Wiring question
« Reply #15 on: May 25, 2017, 06:19:15 am »
Source would be the +5VDC the Arduino puts out on the pins

Offline madmonk

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Re: LED Wiring question
« Reply #16 on: May 25, 2017, 10:51:51 am »
For 4 LEDs with a 3V forward voltage you would need a 1/2W 27 Ohm resistor, if you are using red LEDs then you would need a 33 Ohm resistor.

As has been said before you cannot mix LED colours in the circuit, as the different forward voltages will cause problems.  If you want to power red, green and white LEDs you would need 3 separate circuits or add individual resistors to the LEDs.

Offline whb64

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Re: LED Wiring question
« Reply #17 on: May 26, 2017, 10:50:17 am »
Resistors definitely are not going to be a problem, I have over 1600 resistors in a wide range of values :)

Offline Tankton

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Re: LED Wiring question
« Reply #18 on: May 26, 2017, 12:15:14 pm »
Here is that transistor circuit.
Live Long and Prosper

Cameron Lewis Sr.

Offline whb64

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Re: LED Wiring question
« Reply #19 on: July 29, 2017, 03:49:22 pm »
Well I'm just about ready to start my wiring and programming my board :)
« Last Edit: August 13, 2017, 06:15:59 pm by whb64 »

 




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