TinyPICO V3 USB-C with u.FL by Unexpected Maker : ID 5750 : $21.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Usb Type-c Nano Samd21 48mhz Cortex M0 32 Bit Microcontroller Module With Spi Interface For Arduino Iot Development Smart Watch - Integrated Circuits - AliExpress