Quantity   Component name
1 × Trinket Pro 3V Used as the transponder due to small size. Sourced from AdaFruit
2 × Nordic nRF24L01+ 2.4 Ghz Transceiver, well suited for multiple transceivers, but limited range. Sourced from Sparkfun as a breakout board
1 × 150 maH lithium battery Sourced from Adafruit.
1 × Trinket Pro LiIon/LiPoly Backpack Sourced from Adafruit.
1 × Arduino Micro Used as the receiver due to its 16 bit counter and ability to transmit serial over USB to a terminal. Also offers superior timing capabilities over other Arduino platforms.
1 × Vibration Switch Sourced from Adafruit, will be used for motion detection for a power saving scheme.