Designed an after market child safety product for monitoring of seat belts fastening and unfastening in cars and vans. This was a high production quantity, consumer product and so production cost was a major design consideration.


  • Texas Instruments MSP430F1121 microprocessor hardware and firmware.
  • 916.5MHz low power, unlicensed radio transmitter and receiver design.
  • Ultra low power consumption circuit design to achieve 5 year battery life from lithium coin cell.