Bluetooth Module (Re-)Investigation

A project log for PIP-Watch

Pip-Watch (Personal Information Panel) is an open-source smart watch with an ePaper display, a bluetooth modem, and a Li-Ion accumulator.

jaraJara 05/18/2014 at 09:100 Comments

Some five years ago I bought a nice UART-over-Bluetooth adapter module. The module emulates a serial port (UART) over a Bluetooth connection. All necessary chips and an antenna are mounted on a small PCB board depicted below.

The type I’ve got is the cB-OEMSPA310i-04 with an internal antenna. The module requires only a 3.3V power.

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