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betaflight developer FC for the STM32 H735

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yolo-chonker

if you are a betaflight dev and received an assembled board from crteensy

There is a branch with the "as-built" state that you received: https://github.com/crteensy/yolo-chonker/tree/as-built-20230303

It includes a description of minor mistakes and errors, and what paste (high temp, low temp) was used where.

What this is

betaflight developer FC for the H735

The layout has 6 layers, and the decoupling is designed for oshpark's 6-layer stackup (see oshpark_6L_stackup.png)

  • Format: 30x30 hole distance
  • Battery voltage range: 2-6S
  • 5V DCDC: LMR33620CRNXT
  • 3V3: TPS62824
  • Separate DCDC for HD out; LMR33620CRNXT set for 10V or 5V, configured with a solder jumper
  • MCU: STM32H735
  • peripherals that can be connected to the MCU with solder jumpers:
    • IMU: ICM-20602 and BMI270; dual gyro is possible
    • Flash: S25FL064L
    • Baro: DPS310
    • LEDs:
      • voltage rails LEDs: HD DCDC (5/10 V), 5V, 3V3
      • two standard LEDs for the FC
      • WS2812B including an output pad to attach more
    • battery voltage sensing
  • SWD pads
  • no analog OSD
  • no HD connector

CC-BY-SA-4.0 https://creativecommons.org/licenses/by-sa/4.0/legalcode

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betaflight developer FC for the STM32 H735

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