An RPi-Powered Multi-DX7/TX816 Style Synth https://hackaday.com/2023/05/07/an-rpi-powered-multi-dx7-tx816-style-synth/ #hardwareorchestra #MusicalHacks #modularsynth #fmsynthesis #YamahaTX816 #PCM5102 #lo-fi #midi

An RPi-Powered Multi-DX7/TX816 Style Synth - [Kevin] over at Simple DIY ElectroMusic Projects has released a complete DIY modul... - https://hackaday.com/2023/05/07/an-rpi-powered-multi-dx7-tx816-style-synth/ #hardwareorchestra #musicalhacks #modularsynth #fmsynthesis #yamahatx816 #pcm5102 #lo-fi #midi

Was laying out the #kicad #schematic for #muvco and it started to seem too pedestrian.

Went back and realized I had been using the #pcm5102 wrong and it does indeed do exactly what I originally wanted.

Now making a waveform generator instead of using the dds #ad9833. Much more flexible in shape and can be semi-polysynth ("chordal #synth"?) #synthdiy

Can now generate a perfect 5th in 260us! In mostly-unoptimized #micropython! Just dyads still--need to generalize to larger chords + diff shapes.

The nice thing about having a truly awful memory is that you have new ideas every day.

Hey, I thought, I should really try this #PCM5102 on the #esp32

After a few hours of frustration later, I got it working.

Then I found *my own review* on Amazon of this same device, rejecting it as having a problem that I now realize was me probably using it wrong.

If I could remember for more than 17.3us, I would never have tried this idea again.

So you see--a superpower.

The #PCM5102 also arrived and this one is even worse than #MAX98357. At least the 98357 accurately describes itself as a DAC + Class D amp. The 5102 just says it is a DAC but is also a Class D amp.

I guess the "generate waveforms" part of this project is on hold until next week. Instead, I can work on software I need to hook up all the bits.

It's the most useless #DTMF phone dialer! Only sequential numbers allowed!
(this is a test bed for doing multicore stuff on the ESP32: #Mozzi audio synthesis in "loop()" on core1 and UI stuff on core0). Uses a @adafruit QTPy ESP32, a #PCM5102 I2S DAC, and a #SH1106 OLED display #Arduino code: https://github.com/todbot/mozzi_experiments/blob/main/esp32_multicore_mozzi_dtmf/esp32_multicore_mozzi_dtmf.ino #adafruit #qtpy