RPi Interface Rev C

Inspiration

• LTE Breakout

• RPI Interface Rev B

Features we aren’t adding but considered

• no ELRS

  • ELRS changes a lot quickly

  • could be saved for a future revision

Features

• Begin from RPI Interface Rev B

  • Keep the UART killswitch and one UART passthrough for the RPi to FC direct

  • Keep UART LED indicators

  • Keep CAN circuit

    • this can be used to control the lighting system

• Add an LTE modem to RPi interface rev c

  • relevant discord chat & here

  • quectel module he put

  • Quectel gets USB into the RPi

• Change buck converter to support 48V input so we can connect VBATT

  • this makes architecture decisions and harnessing easier

• Switch STM32

  • STM take in the three uarts form quectel

  • The other STM is smaller and doesnt have enough UARTs for this

  • STM will communicate with the RPi over SPI

Part Numbers

• EG915NEAAC-N05-SNNSA

• STM32F415RGT6

Block Diagram

• todo