USB to Bluetooth adapter

The adapter is based upon third-party's hardware - Seeeduino XIAO board.

Features:

• ARM Cortex M0 + CPU (SAMD21G18) 48MHz
• 256 KB Flash, 32 KB SRAM
• USB Type-C
• SPI, I2C, UART, DMA available
• coin size(20mm x 17.5mm)
• Logic level:3.3V

Variants

"Classic" Bluetooth (with HC-05 module)

Bluetooth LE (with Huamao Tech HM-10 module)

Bill of materials

Number	Part	Qty	Picture	Source
1	Seeeduino XIAO	1		AliExpress Banggood
2	Bluetooth HC-05	1		AliExpress
3	HM-10 Bluetooth LE module	1		TBD
4	40 pcs. female DuPont jumper wires	1		AliExpress

Quick start

1. Download an appropriate version of "USB-Bluetooth" firmware from this location ;
2. Power up the XIAO and apply "double RESET" procedure to enter into firmware download mode

3. "Drag and drop" UF2 file of the firmware into Arduino disk in your "File Manager", similar to action shown on this picture

4. Connect all the wires to the Bluetooth module as shown on the pictures above
5. Use appropriate USB adapters to attach the device to ES Edition
6. Open up Avare application for Android and set up a connection