espsynth86

Synth engine for esptiny86. this module is largely based on MicrobeModular's Equation Composer ported to esp8266 with full featured Audio Design tool https://esptiny86.github.io/espnode86

How To install (For user)

• Make sure your Arduino Ide at version 1.8.6 or more
• Add https://esptiny86.github.io/espboard8266/package_espsynth_index.json to board url on Arduino preferences
• Install Espsynth86 from board manager
• Download Espsynth library latest version from https://github.com/esptiny86/espboard8266/tree/master/library then install to Arduino > Sketch > Include Library > Add Zip file
• Choose ESPSYNTH Modules from Tools > Board > ESPSYNTH Module > Wemos D1 etc..
• Open example sketch

Hardware Implementation Example

8BitmixtapeWIFI

esptiny86 Stompbox design by @Dusjagr

Schematics

There are two methods for generating sound with ESP8266

• PDM - Pulse Density Modulation

  

• DAC - Digital Analog Converter (tested with PT8211)

  

To choose between mode uncomment in synthmodule86.ino file

define USE_PDM

Audio design Tools

• Inspired by Teensy, design tool is also available https://esptiny86.github.io/espnode86

Tips

NeoPixelBus (works well with esp8266)

https://github.com/Makuna/NeoPixelBus

//declare
NeoPixelBus<NeoRgbFeature, NeoEsp8266BitBang400KbpsMethod> neoPixel(NEO_NUM_LEDS, NEO_DATA_PIN);
RgbColor green(0, 128, 0);

//setup
neoPixel.Begin();
neoPixel.Show();

//update
neoPixel.SetPixelColor(i, green);

Fix clicking sound

#include "ESP8266WiFi.h" // wifi header only needed to turn it off

void setup() {
    WiFi.forceSleepBegin(); // turn of wifi to reduce power consumption
}

Compiling (for developer)

• Install Arduino IDE then install esp8266 from board library
• Open and configure "Makefile" file, then on command prompt/terminal type Make (the Makefile will auto discover your Arduino IDE and Libs))
  • Nodemcu Lolin use BOARD = nodemcu
  • Wemos D1 use BOARD = d1_mini
• Qt Creator is optional but it is recommended for developing further with espsynth86
• Edit project.include to your pathto get Intelisense in QT Creator

Compiling (for developer) (library version)

• Install Arduino IDE then install esp8266 from board library
• Open and configure "Makefile" file, then on command prompt/terminal type Make (the Makefile will auto discover your Arduino IDE and Libs))
  • Nodemcu Lolin use BOARD = nodemcu
  • Wemos D1 use BOARD = d1_mini
• Qt Creator is optional but it is recommended for developing further with espsynth86
• Edit project.include to your pathto get Intelisense in QT Creator
• sh build_lib.sh

Support

This project is developed independently and without any connection to funding or big collective or organization, Donation is highly appreciated, go to https://www.patreon.com/badgeek become a patron and support this project

Credits

• MicrobeModular Equation Composer - https://github.com/clone45/EquationComposer
• MakeEspArduino - https://github.com/plerup/makeEspArduino
• RPD (Reactive Patch Development) - http://shamansir.github.io/rpd/
• Bitluni Wavetable Editor - http://bitluni.net
• TinySynth - http://www.technoblogy.com/show?Q7H
• Esp8266 Summer Audio hacking by Jan Ostman - http://blog.dspsynth.eu/audio-hacking-on-the-esp8266-2/
• Esp8266 Audio - https://github.com/earlephilhower/ESP8266Audio