motors

  • mixer

✅ Recommended ESC/Motor Protocol for Mobula8

  • DSHOT600 → most common, reliable, and default for Mobula8.

⚡ Alternatives (if you have issues)

  • DSHOT300 → safer fallback if you experience desyncs or motor twitching.
  • DSHOT1200 → possible on some boards, but not necessary (no real benefit on Mobula8).

test

  • [x] DSHOT 300
  • [x] DSHOT 600

settings

DSHOT300 -- ESC/Motor protocol

[] - MOTOR_STOP Don't spin the motors when armed [] - ESC_SENSOR Use KISS/BLHeli_32 ESC telemetry over a separate wlre [x] - Bidirectional Dshot (requires supported ESC firmware) 12 - Motor poles (number of magnets on the motor bell) 0 - Dynamic Idle Value [* 100 RPM] 8% - Motor Idle ( %, static)

EX1103 - KV11000 == Standard tiny whoop motors like EX1103 11000KV have 6 poles / 3-phase, but some high-torque variations may use 12 poles.

What is ESC Bi-Directional DShot?

1. DShot Protocol (normal)

  • A digital protocol to send throttle signals from the flight controller (FC) to the ESC.
  • More reliable than analog PWM or Oneshot/Multishot.
  • Normally one-way: FC → ESC only.

2. Bi-Directional DShot

  • Extension of DShot where communication is two-way:
    • FC → ESC (throttle command)
    • ESC → FC (motor feedback data)

3. What Data Comes Back?

  • RPM (motor speed) in real-time
  • Current, voltage, temperature (if ESC supports it)
  • This allows the FC to know exactly how fast each motor is spinning.

4. Why is it Useful?

  • Enables RPM Filtering in Betaflight / INAV:
    • Filters gyro noise at exact motor frequencies.
    • Makes flight smoother and more efficient.
  • More accurate telemetry than traditional ESC sensors.
  • Helps with diagnostics (e.g., if one motor is desyncing).

Summary

Bi-Directional DShot = digital two-way protocol between FC and ESC.
It not only controls motors, but also lets ESC report real-time motor RPM & telemetry back, enabling advanced features like RPM filtering for smoother flights.

2. How to Check in Betaflight

  1. Plug Mobula8 into Betaflight Configurator.
  2. Go to Configuration tab → ESC/Motor Features.
  3. Look for "Bidirectional DShot" checkbox.
    • If available, try enabling it.
  4. Save & reboot.

3. Verify in Motors Tab

  • Go to Motors tab in Betaflight.
  • If bi-directional DShot works, you should see motor RPM values in real time.
  • If you only see throttle % but no RPM, your ESC firmware doesn’t support it.

ref

Table of Contents

https://www.electrodragon.com