Teensy 4.1 based synthesizer using PJRC Audio Board and Audio Lib

Website: electrotechnique.cc

The pcb and front panel to build TSynth are available from Tindie with SMD 4067 multiplexers, 6N137 opto-isolator, capacitors and resistors fitted. The entire cost of parts to build TSynth will be around $99 if you buy components from the cheaper suppliers and the build time around two hours to solder. Plans for a 3D printed/laser cut enclosure are also available. Questions: [email protected]

Preset Patches

Format your SD card using the SD Association formatter. Copy all the presets straight on to the card with no other files or folders.

Instructions

The source code requires at least Teensyduino 1.54 from PJRC to compile. You also need CircularBuffer from Agileware and Adafruit_GFX, which are available in the Arduino Library Manager. NOTE if using Teensyduino 1.55, you'll need to remove a line from TeensyThreads.cpp

See this thread if you get an error concerning utils/debug.h: [https://forum.pjrc.com/threads/68192-Teensyduino-1-55-Released?highlight=utils%2Fdebug.h}(https://forum.pjrc.com/threads/68192-Teensyduino-1-55-Released?highlight=utils%2Fdebug.h)