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docs: bidirectional dshot

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Jacob Dahl
2025-05-22 21:38:00 -08:00
committed by Hamish Willee
parent afbaa71bfc
commit 3d5cb891a6
1 changed files with 18 additions and 1 deletions
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docs/en/peripherals/dshot.md
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@@ -36,7 +36,7 @@ Remove propellers before changing ESC configuration parameters!
Enable DShot for your required outputs in the [Actuator Configuration](../config/actuators.md).
DShot comes with different speed options: _DShot150_, _DShot300_, _DShot600_ and _DShot1200_, where the number indicates the speed in kilo-bits/second.
DShot comes with different speed options: _DShot150_, _DShot300_, and _DShot600_ where the number indicates the speed in kilo-bits/second.
You should set the parameter to the highest speed supported by your ESC (according to its datasheet).
Then connect the battery and arm the vehicle.
@@ -147,3 +147,20 @@ ERROR [dshot] No data received. If telemetry is setup correctly, try again.
Check manufacturer documentation for confirmation/details.
:::
## Bidirectional DShot
Bidirectional DShot enables ESC RPM (eRPM) data collection from each ESC at high frequencies. This enhanced telemetry significantly improves the performance of [Dynamic Notch Filters](../config_mc/filter_tuning.md#dynamic-notch-filters) and enables more precise vehicle tuning.
### Configuration
To enable bidirectional DShot, set the [DSHOT_BIDIR_EN](../advanced_config/parameter_reference.md#DSHOT_BIDIR_EN) parameter.
:::info
The system calculates actual motor RPM from the received eRPM data using the [MOT_POLE_COUNT](../advanced_config/parameter_reference.md#MOT_POLE_COUNT) parameter. This parameter must be set correctly for accurate RPM reporting.
:::info
:::warning
Bidirectional DShot is currently supported on H7 targets only, with support limited to 4 motor outputs.
:::