UART Plug Display such as wearable computing

such as wearable computing

The PIR only option is just the PIR module

3V regulated power from a single AA battery

and 2x 10 kΩ resistors (1/6 watt)

pin headers

UART Plug Display such as wearable computingThe UART Plug contains a hardware serial port with 64 byte buffers for both send and receive. It can support baudrates up to 115200 baud, if the connecting bus can handle this bandwidth. An I2C bus running at 3. 3V is used as interconnect, with all the power and signal lines brought out to to both sides of the board to allow daisy chaining with other I2C conformant boards. The two solder jumpers on the board select addresses to allow up to four UART