CPU

You can use any ESP32 mini or ESP8266 mini with the correct pinout, but we highly recommend the ESP32-C3.

ESP32-C3 (recommended) ESP32 ESP32-S2 ESP8266
USB-Type Type-C micro-USB Type-C micro-USB or Type-C
Bluetooth
Bluetooth LE ?
Case ✗(not yet)
external power¹
LED WS2812B RGB White White White
fits perfectly stands over ✓¹
Where to buy? AliExpress Amazon DE³, AliExpress AliExpress Amazon DE³, AliExpress

¹ External power via the terminal connectors are not possible if the USB-connector is at the bottom (ESP8266).