Having some trouble with getting my board to work

[Kpo93]

I used the lightfun.ino file on my board and can't seem to get anything to light up. My microphone is registering the noises, but there is no current going to the base of the transistor. The only components that are different are: the sound sensor I'm using is a 4-pin and I'm using an arduino uno. Any help would be greatly appreciated

[amiravni]

Hi, few things:

1. Your module seems to be 5V and not 12V like mine (Shouldn't be a problem if you power it with 5V)
2. There should be almost zero current at the base of the transistor, only voltage changes. The current should flow between the collector and emitter.
3. Try to simplify things - First write a code which just light each of the colors every second or so, and then you'll know this circuit is working. Then try to print the A0 values from the mic to check these are also logical values. When both codes work you can start the integration between them.