STM32F1 Radio Control USB adapter for Turnigy 9x

I use this board: http://wiki.stm32duino.com/index.php?title=Blue_Pill

Allows Turnigy 9x with OpenTX firmware to connecto a PC as a USB HID game controller. All switches, knobs, and sticks are activated.

Based on same project for STM32F3Discovery: https://github.com/alexeystn/stm32-ppm-usb-adapter, but ported for STM32F1 (tested on STM32F103C8) controllers.

Project for CooCox IDE.

Compiled binaries can be found in Debug dir: https://github.com/shaiku/STM32-RC-USB-Adapter/tree/master/stm32_PPM_F103/Debug/bin

Connections:

• RC PPM out <==> PA8
• RC GND <==> GND

Transmitter Configuration

Load OpenTX firmware for 9x: https://www.open-tx.org/

• Create a new model for the simulator
• On the SETUP page, change Proto to PPMSim 14CH
• On the MIXER page configure channels
  • CH1: Rud
  • CH2: Ele
  • CH3: Thr
  • CH4: Ail
  • CH5: P1
  • CH6: P2
  • CH7: P3
  • CH8: 3POS
  • CH9: THR
  • CH10: RUD
  • CH11: ELE
  • CH12: AIL
  • CH13: GEA
  • CH14: TRN