This is a very thin and compact board I designed for recessed contact door/window sensor with vibration/tilt detection.

But it could also be used for:

• knock sensor??
• mailing box??

* Board specs*

• Mcu : NRF52832 with optional onboard inductors for DC/DC mode for lower power mode

• Accelerometer : LIS3DH

• Hall Effect Sensor : DRV5032 (for detecting a recessed magnet)

• Coincell : CR1632 (with 100uF capa for buffering)

• Whip (external wire) antenna

• smd pads for reprogramming through SWD

• Parts size : 0402

• Size : 18mm diameter for 19mm (3/4) drill

• Expected battery lifetime : 2 years based on 40*2 events per day

Known issues

TODO

• Upload files soon, be patient please :)
• etc.

Contributors

Special thanks to

• Mysensors Core Team :)
• Nordic, Adafruit, Sparkfun, TI, etc.. for all educational infos they share

Links, reference and license

• Copyright Scalz (2017).