NRF 51822 wireless PIR sensor with Android camera

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NRF51822 BLE battery voltage logger


NRF 51822 is a very low power BLE System On Chip , that allows to use as Bluetooth Low Energy peripheral connected to Passive Infrared Receiver module.


PIR module used:


Schematic diagram of ble motion sensor:

HW build to 3D printed case:






Software for NRF51822 was developed with Arduino IDE:



NRF connect android application could be used  to check Bluetooth Low Energy  UART services and characteristics:



BleCameraNRF  android application is used to start motion detection  from Nrf51 module, check battery, temp and solar log.




Project files can be found from github:

https://github.com/joukohak/nrf51pir




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