Espruino-based Guitar Pedal

OnlineSCAD I actually didn't knew you were the author :)

Nooo... I'm not the author at all! I just got fed up with OpenSCAD and thought that using JS would be a great idea. I hacked something up and then realised that OnlineSCAD (or its predecessor) already existed!

ADS1115

I'm not quite sure I understand why you'd want this? Espruino has many analog inputs built into it. They're only 12 bit, but you're not going to be able to grab data at audio speeds via I2C anyway.

I guess one option would be to:

• Put bluetooth audio in/out inside the pedal
  
• Attach an HC-05 bluetooth module to the Espruino, and connect all your switches and buttons to the Espruino
  
• Write an Android app for the table/phone that found out what all the buttons were set to via Bluetooth and then did all the audio transforms on the tablet
  
  

Sadly iPhone/iPad couldn't be used, as Apple block Bluetooth serial ports for some reason. I guess you could use an HM-10 and then transmit the switch states via BLE