Open Guitar Pedal

 If you are a guitar player and like tinkering with electronics this Open Guitar Pedal will probably be of interest.

“The shield has three parts:

• The Input Stage or Preamp: Amplifies the guitar input signal and sends it to the Arduino microcontroller to be processed. 
• Arduino Board: It does all the Digital Signal Processing (DSP) modifying the signal and adding the effect (delay, echo, distortion, volume…).
• The Output Stage: Once the waveform is processed, the signal is taken from the Arduino DACs and prepared to be sent to the Guitar Amplifier.
  This part also includes a Summing Amplifier which is very useful for delay effects like echo or chorus.”

 Thanks to Doug for the tip.