I used this product for the Circular Christmas Tree. I didn`t use micropython but the NeoPixels library from Adafruits. Although there seems to be a Nano ESP32 available at the ESP32 boards, I had to install the Arduino Nano ESP32 to be able to program the board. Furthermore, make sure to use the GPIO pinning style (legacy) via Tools -> Pinning Numbering -> By GPIO numbering (legacy). Using the By Arduino pinning (default) didn`t seemed to work for my when I used the Adafruits NeoPixels library.