I have a project where I am making a Portal Gun Prop from Portal, but I am new to using arduinos. So I do not understand if I am doing this right. I am aware that my RGB LEDS Diodes need Resistors, and I am unsure how to calculate that with these diodes. I want to be able to switch the lights betw…

The LEDs can't be in series without higher voltage. i.e. Two 2V LEDs in series needs 4V, plus the voltage drop across the resistor. And RGB LEDs don't work in series because you can't isolate each color in series. In parallel the current adds-up and the "absolute maximum" from an Arduino pin i…

So, from what I understand, even if I was to break up the series to a parallel, it would be too much for the arduino pin? If I was to remove the audio option, and put half of the diodes on the analogue pins, would that be a fix for that issue?

[image] cosplayinghelp: If I was to remove the audio option, and put half of the diodes on the analogue pins, would that be a fix for that issue? No. You need to employ some transistors in your 'design'.

[image] cosplayinghelp: So, from what I understand, even if I was to break up the series to a parallel, it would be too much for the arduino pin? True. You will need to construct a driver circuit or buy a LED driver with enough "channels" to suit your needs. LED drivers are easy to build: H…

Your frizzing thing is hard to read, a real annotated schematic would be easier to read. Instead of transistors take a look at using MOSFETs, they will not lose as much energy as they will not be burning 0.7 volts for each transistor in the chain. How long does this run from one charge. Using higher…

RGB LED Diode Resistors/Power source to Nano

Other Hardware LEDs and Multiplexing

mrburnette April 10, 2023, 1:32am 3

Stuff to reference:

Unless you have a quality spec'd LED with guaranteed characteristics, you really need to do your own measurements and "match" the LEDs

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RGB LED Diode Resistors/Power source to Nano

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