ESC Speed Controller Calibration
ESC Speed Controller Calibration
ESC (Electronic Speed Controller) calibration is an important step to ensure synchronized operation of all drone motors. Incorrectly calibrated controllers can lead to vibrations, unstable flight and reduced efficiency.
When ESC Calibration is Needed
Calibration is necessary in the following cases:
First drone assembly with new ESCs
Replacing one or more ESCs
Motor synchronization problems
After ESC firmware update
Preparation for Calibration
Before starting, make sure:
Remove propellers for safety
Connect drone to computer
Open Betaflight Configurator
Ensure stable USB connection
Method 1: Calibration via Betaflight
Step 1: Range Setup
Go to "Motors" tab
Set minimum value (usually 1000)
Set maximum value (usually 2000)
Step 2: Calibration Process
Disconnect drone power
Set maximum throttle on transmitter
Connect battery
Wait for ESC sound signal
Method 2: Manual Calibration
For ESCs that don't support automatic calibration:
Set maximum throttle
Connect power
Wait for 2-3 sound signals
Quickly lower throttle to minimum
ESC will emit series of short signals
Checking Results
After calibration, check:
Synchronized startup of all motors
Same speed at same throttle value
Smooth acceleration without jerks
No vibrations at idle
Betaflight Setup
ESC/Motor Features
DSHOT600orDSHOT300for modern ESCsMotor PWM frequency- usually 480Hz for PWMESC sensor- enable for telemetry
Common Problems
ESC Not Responding to Calibration
- Check signal wire connections
- Make sure protocol is correct (PWM/DShot)
- Try calibrating each ESC separately
Motors Spinning at Different Speeds
- Repeat calibration
- Check power quality
- ESC replacement may be needed
Expert Tips
Always remove propellers during calibration
Use quality power supply for stable results
Calibrate all ESCs simultaneously for better synchronization
Test at low RPM before full flight