Overview

A portable beatmaker for CYD (cheap yellow display, aka ESP32-2432S028R). Create and sequence loops into complete songs with 3 synth tracks and 1 drum track.

Build

Open in VS Code with the PlatformIO extension, apply the Mozzi Patch below, connect your CYD via USB, then click "upload" to build and deploy.

Side note: I don't bother with Arduino IDE much these days, as it requires too much messing about with board selection, port speed selection, and manual library management with global versions. VSCode+PlatformIO provides easy one-click build-and-deploy from a git clone.

Mozzi Patch

The touchscreen input configuration gets destroyed after startMozzi() is called. For now, the easiest workaround is to patch libdeps\cyd2usb\Mozzi\internal\MozziGuts_impl_ESP32.hpp like this:

#  elif MOZZI_IS(MOZZI_AUDIO_MODE, MOZZI_OUTPUT_INTERNAL_DAC)
-  i2s_set_pin((i2s_port_t)i2s_num, NULL);
-  i2s_set_dac_mode(I2S_DAC_CHANNEL_BOTH_EN);
+  i2s_set_dac_mode(I2S_DAC_CHANNEL_LEFT_EN); // output only on GPIO26, since GPIO25 is used for touchscreen on CYD
#  endif

Hardware

Tested on the CYD2USB variant (eg this one with USB-C) of the original CYD. Probably works on the original with micro-USB only, using the "cyd" environment.

License

GNU General Public License v3.0

Credits

This is a port of Staffan Melin's OscPocketM, originally for the M5Stack Core2 licensed as GNU General Public License v3.0

This port has made minimal modifications to the original OscPocketM source via a minimal/janky implementation of the M5Stack libraries, but any future features will probably replace this with a HAL abstraction.