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I am looking to build a 4x4 button matrix using the RGB Omni Board do I still need to use diodes? Are there any good tutorials on how to set up this up with the RGB Omni board along with a parts list?
The RGB omni comes with diodes and LED's already populated! You just have to solder 3 sets of 10-pin headers. 1 for the button header and 2 LED headers.