303duino

303duino

An Arduino synth using mozzi library.

The goal of this project is to create a TB-303 like midi synthesizer with:

• ADSR envelope
• Low pass filter
• Midi control
• Multiple waveshape

The project is under development.

To connect the audio part, please follow this instructions.

Then, connect potentiometers to A0-A7 which are:

• A0: Attack
• A1: Decay
• A2: Sustain
• A3: Release
• A4: Filter cut-off
• A5: Filter resonance
• A6: Filter amount (with ADSR envelope)
• A7: Tuning

Then, connect a push button to pin 2, a switch button to pin 11 and two leds to pin 3 and 4. The pin 3 and 4 are used to display settings. The pin 11 is used to choose between legato setting and waveshape setting. The pin 2 is used to change the setting. The settings are:

• Legato: off / on / glide / legato+glide
• Waveshape: saw / square

Finally, connect the midi input to the pin 1 following any arduino midi in schematic.

This project is using an Arduino Nano but this should work with many other boards.