Developing a Braille terminal for phone and computer interaction
We developed the full electronic product design for this Braille terminal Key elements of our contribution included full firmware and hardware ownership and support for mass production including FCC certification.


  • Microcontroller – Coldfire MCF522xx series
  • Connectivity: USB OTG, BT 2.1 (CSR)
  • Braille Cell Pack
  • Power Management:
    • battery gauge
    • High Voltage power supply circuit for Braille display
    • Li-Ion Rechargeable Battery
    • External USB power for charging
  • FCC, CE Pre-certification
  • RTOS – MQX
  • FW upgrade over USB
  • Bluetooth integration with phone & PC
  • Supports 12 different languages for braille display
  • Delivered the full electronic product design
    • Board design/layout/prototype manufacturing
    • Firmware porting & production quality testing
    • Mass production support to OEM / CM
    • Ongoing maintenance