Arduino Guitar Effects Pedal Project

rjenkinsgb said:

I did find a fully filtered version, at only about ten times the cost...
https://static1.squarespace.com/sta...32009cc69/1440849291799/mega8.jpg?format=500w

Click to expand...

Yea, these look like they spent some time reducing noise and voltage spikes. What are the little black devices near all of the I/O pins next to the capacitors?