Program a Laird BL600 Bluetooth 4.0 Module to work as a RSSI activated switch controlled by an existing Android app. The electronic circuit of the device has already been designed. The functions of the BL600 will basically be to output a signal for activating an optoisolator when the Android device is near and also when the Android app signals it to activate.
The app is already functional and currently works with Tinyos TOSR02-BluetoothBee Wireless module, so communication protocols can be the same and don't have to be changed unless necessary.
PLEASE NOTE: Freelancer must have experience working with either the BL600 module or Nordic's nRF51822 chip and have a Dev Kit for the job.