EspTinyUSB VS mt32-pi

Picked up a LilyGO T-Dongle (ESP32-S2) and going through their github (https://github.com/Xinyuan-LilyGO/T-Dongle-ESP32S2), they only have an example for reading the NAND over USB, via MSC. Has anyone been able to get the SD accessible for read and write in device mode on this or any other ESP32-S2 board? Tried using chegewara's EspTinyUSB, but couldn't get the device to appear in OTG mode.

In Arduino I have the ESP32TinyUSB library, and the board is set to ESP32 Dev Module. I am attempting to build the sketch in the examples for the library at EspTinyUSB/mouse.ino at master · chegewara/EspTinyUSB (github.com) .

The USB OTG pins CANNOT be remapped, which is one of the few functions that can't. Here's the library I use: https://github.com/chegewara/EspTinyUSB

I've been using this: https://github.com/chegewara/EspTinyUSB with the S3, though it was made for the S2. It is for Arduino.

I'd prefer to get the USB working first, and I've been using this project: https://github.com/chegewara/EspTinyUSB to try to get a sign life out of the thing.

You might be in luck because there is an example here. https://github.com/chegewara/EspTinyUSB/tree/master/examples/device/midi

Thanks for your reply. I see there is an active github discussion about USB support in the Arduino IDE, so I guess it is very new/cutting edge. I really like the look of /u/seonr's boards at Adafruit but I also hope we'll see some small/cheap/"pro" boards like the Arduino Pro Micro clones since it feels like this is what the S2 was designed for.

I have just seen https://github.com/dwhinham/mt32-pi but it doesn't seem as easy to play with and well-documented as the other software I've used.

Cool system. I'd see if you can get a hold of a Roland MT-32 type synth. If your sound card has a daughterboard connector (it does, top right corner) you can get a Serdaco Wavetable board which would let you have generalMIDI output. An external MT-32 or a mt32-pi will also greatly improve your music output.

Regardless the best option is a MT32-pi solution. https://github.com/dwhinham/mt32-pi/wiki/Custom-hardware

I think MT-32 and SC-55, at least, are wildly overpriced for what they are from a music perspective, thanks to the retro gaming bubble. If you want to mess around with one, I would recommend checking out mt32-pi. In addition to the extremely limited MT-32 sound palette, it can also load soundfonts, which really opens things up a lot.

Check out Mini-Dexed and MT32-Pi. I use both and they're great. They are built on the bare-metal "circle" platform, so they don't run on top of linux (so no faffing about with JACK routing, etc.).

its a CJMCU 5102 DAC Board, which is one of the supported soundcards. You can use the internal headphone jack of the Pi as well, however it only supports 12bit PWM audio there, which is usable but has a lot of artifacts and I would not recommend therefore

You can turn a Raspberry Pi into a Yamaha DX7 using MiniDexed or a Roland MT-32 using mt32-pi (which also loads soundfonts via FluidSynth). I use both of these regularly. They're great. Both work with USB MIDI controllers with no additional hardware required and boot headlessly in a few seconds to work like a true instrument.