I've just built my PS. I have to say I've made my own homemade PCB, and it won't work (laughs). Needless to say I've connected it to the Arduino and programmed some of the examples from the library.
Maybe somebody can point me where to start debugging it. The things I've seen so far:
- The led works.
- The bypass works. Led goes out and I can hear the guitar.
- The TL072 opamps power seems to be right: 9.6V between pins 4 and 8.
Congrats for building your own PCB, I know it is pretty tricky because it is double sided but I understand how cool it to build something with your own hands.