Project Highlights

Selected projects that highlight my skills and interesting technologies.

Ossia, Inc "Charge over the air" (COTA) receiver system. Eliminates the need to change batteries or use line-power.

  • 5.8 GHz (OTA) rechargeable battery-powered transmitter ("beacon"), with BLE back channel, OTA charge controller
  • ARM Cortex-M4 (Nordic nRF52832)
  • IAR Embedded Workbench
  • FreeRTOS
  • Over-the-air (OTA) device-firmware updating (DFU) via BLE
  • Secure bootloader
  • Secure element (ST Micro) STSAFE-A110. This provides authentication and secure data management services.
  • I2C port is exposed for OEM use. This allows adding IoT Sensors (e.g. temperature, barometric pressure)
  • See IoT proof-of-concept on the Project Details page.

PebbleBee "Found" Pet tracking device

  • LTE Cat-M1, utilizing "Sequans" (Skyworks Solutions SKY66430)
  • ARM Cortex-M0
  • Keil MDK ARM
  • GPS receiver
  • eDRX (Extended Discontinuous Reception)
  • SPI, I2C, UART

GlobalStar, "SpotX" Satellite transceiver

  • Atmel SAMG51 ARM Cortex-M4
  • FreeRTOS, Qwerty keyboard, barometric sensor, LCD display
  • Atmel Studio