Bluetooth Low Energy IOT

NRF 51822 is a very low power BLE System On Chip , that allows to use as B luetooth 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

BLE wireless surveillance camera with Android smartphone If you own Android smartphone with Bluetooth 4.0 and Android version min. 4.4(KitKat), you can easily change it to surveillance or hunting camera.     Just make PIR sensor(HC-SR501), BLE module (JDY-08) and STM8S103 microcontroller based   wireless movement detector .    This could be done easily without STM8S microcontroller using another BLE module with embedded IDE to develope software to communicate to Android application. Bluetooth Low Energy  wireless motion sensor Low power motion sensor consumes about 0,5 mA  on active BLE connection sleep mode. But it consumes 9 mA in active connection state, when motion is detected. Prototype hardware looks like this: Android applications(2 pcs) I have developed 2 Android   applications one to handle  BLE link to motion sensor and another to h...