Sound into Light shows

Step 5 Arduino

I used the basic analog read serial program as a starting point for my arduino code. I have 3 basically indentical modules, one for each analog input connected to a filter. I stored the analog read value then used IF statements to compare the analog read value to the old analog read value checking for a 10% differeance higher or lower. Finally i made the old analog read value equal analog read value with that being the end of the loop. I’ve included my code at the end of the post for your viewing pleasure.

The RGB LED's have + voltage as the common pin so the different colors can be triggered on when the state of each pin reads "LOW", which i substituted as ground.

IMPORTANT NOTE: i included a 1k resistor on the +5v going to the LED's because when i connected them to the rest of the circuit i was getting a lot of spiky noise threw out the whole circuit.. this is not included in the parts list or the schematic.