Testing Texas Instruments keyfob (CC2540) with custom android app

Testing Texas Instruments keyfob (CC2540) with custom android app

I build a test android app to communicate with Bluetooth Low Energy keyfob CC2541 kit from Texas Instruments.

The end project was to design and develop a small size anti-theft/forget device and mobile phone application which can communicate with the device. This device can be placed inside wallet, briefcase, etc  and on link loss the app can alert mobile phone user about lost item. And device should be able to run on a coin cell for duration of 8-12months.

During Schematic and PCB design I also added accelerometer and intervalometer for future application. Unfortunately the project never got off the ground but app and PCB was designed and developed.

pcb schem

inductor, capacitor and resistors used were 0201 size.

intervalometer for taking picture on phone using the device.

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