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ESC-Adaptor for ESCs

ESC-Adaptor is a control adaptor for servos and brushless electronic speed controllers (ESCs). A knob and external switch provide smooth speed adjustment, delayed start, hold-to-run operation, forward/reverse control, and fixed output levels.

Compatible devices: servos, brushless ESCs accepting 50 Hz RC PWM signals, and devices using a control pulse width of 1.00–2.00 ms.

Five operating modes​

ModeTypical useOperation
Knob speed controlContinuous speed adjustmentThe knob sets the target output; the switch stops and resumes operation
Delayed startPrevent immediate operation at power-onOutput ramps up after the configured delay
Switch activationHold-to-run equipmentHold the switch to run; release it to stop
Bidirectional modeReversible ESCs or actuatorsIN1 selects direction in real time; output returns to neutral before reversing
Fixed output levelsRC PWM devices requiring four output levelsCycle through 25%, 50%, 75%, and 100%

Output signal​

The adaptor outputs 50 Hz RC PWM:

  • Unidirectional mode: 1.00–2.00 ms.
  • Bidirectional mode: 1.50 ms is neutral; the two directions extend to 1.00 ms and 2.00 ms.
  • Direction changes ramp down to neutral before reversing and ramping up again.

Quick Start Guide