Electuno - Hammond organ simulator for Arduino

Basically this library tries to imitate the final sound of a Hammond organ

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Another attempt to imitate the legendary Hammond organ on Arduino.
Listen to a demo here:

Basically this library tries to imitate the final sound of a Hammond organ, but without recreating a tonewheel simulation. All the sound of the different harmonics is based on a sinusoidal wave.

Then an array is filled with the sum of the harmonics according to the drawbars configuration.
The sum of all this fills another array; This last variable is multiplied according to the desired musical notes.
It simulates a spring reverb (or tries to), a vibrato scanner and a pretty fun Leslie speaker simulator.

electuno_schematics_nodeMCU (1).png

Simple schematics for NodeMCU ESP8266 clone

Portable Network Graphics (PNG) - 170.52 kB - 02/27/2024 at 09:07


electuno_schematics_nano-uno (2).png

Simple schematics for Arduino Nano

Portable Network Graphics (PNG) - 129.64 kB - 02/27/2024 at 09:06


  • 1 × Supported AVR board
  • 1 × MCP4921 Data Converters / Digital to Analog Converters (DACs)
  • 1 × 6N138 Opto and Fiber Optic Semiconductors and ICs / Optocouplers and Optoisolators
  • 1 × 4.7k resistor
  • 1 × 10k resistor

View all 9 components

View all instructions

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