CircuitPython BLE UART between XIAO BLE Sense and ESP32-C3/S3 

code available: embedded-things.blogspot.com/...
The server side run on Seeed XIAO BLE Sense (nRF52840) + Expansion board. Setup BLE UART Server, display received text on SSD1306 I2C OLED.
The client side run on Ai-Thinker NodeMCU ESP-C3-32S-Kit and Espressif ESP32-S3-DevKitC-1. User enter text in REPL to send to server side and display on SSD1306 I2C OLED.

Наука