ESP-8266 stepper motor midi music module (ESP32 synthesizer Arduino project)

Using the ESP-8266 I've started to make some “noise“ with one of my old stepper code can be found here: I am using the esp32 audio kit (based on esp32-a1s) which does record all the sound with its two microphones. The audio kit runs a little firmware to create some delay/echo effects. The line out signal is directly recorded. If you like you can also follow me on --- Intro: (0:00) Overview: (0:46) The piezzo speaker: (1:34) Used components: (2:01) Let's look into the details: (3:03) Finally some “noise“: (9:12)