Class ElectronicSpeedController

Driver for Electronic Speed Controllers (ESCs) typically used to control motors via PWM signals. To use, you generally have to calibrate the ESC through the following steps:

1. Depower the ESC, set the power to the intended maximum point (e.g., 1.0).
2. Power the ESC and wait for "happy tones" to indicate a good power supply, followed by possibly two beeps to indicate the max power limit set.
3. Set the ESC power to the intended minimum power point (e.g., 0.0), and the ESC should provide one beep for every LiPo cell (3.7V) of power supplied, followed by a long beep.
4. Optionally, for some ESCs, arm it by calling the Arm() method, which will drop the power below 0.0.

Assembly: ElectronicSpeedController.dll

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Declaration

public class ElectronicSpeedController

Properties

ArmingPulseDuration

The pulse duration, in milliseconds, necessary to "arm" the ESC. Default value is 0.5ms.

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Declaration

public float ArmingPulseDuration { get; set; }

Power

Gets or sets the power of the ESC, in the range of 0.0 to 1.0.

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Declaration

public float Power { get; set; }

Frequency

Frequency (in Hz) of the PWM signal. The default is 50Hz. Increase for higher quality ESCs that allow higher frequency PWM control signals.

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Declaration

public Frequency Frequency { get; }

IsDisposed

Gets a value indicating whether the object has been disposed.

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Declaration

public bool IsDisposed { get; }

Methods

Arm()

Sends a 0.5ms pulse to the motor to enable throttle control.

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Declaration

public void Arm()

CalculateDutyCycle(float, Frequency)

Calculates the appropriate duty cycle of a PWM signal for the given pulse duration and frequency.

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Declaration

protected float CalculateDutyCycle(float pulseDuration, Frequency frequency)

Returns

System.Single: A duty cycle value expressed as a percentage between 0.0 and 1.0.

Parameters

Type	Name	Description
System.Single	pulseDuration	The duration of the target pulse in milliseconds.
Meadow.Units.Frequency	frequency	The frequency of the PWM signal.

CalculatePulseDuration(float)

Returns a pulse duration in milliseconds for the given power, assuming that the allowed power band is between 1ms and 2ms.

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Declaration

protected float CalculatePulseDuration(float power)

Returns

System.Single: A pulse duration in milliseconds for the given power.

Parameters

Type	Name	Description
System.Single	power	A value between 0.0 and 1.0 representing the percentage of power, with 0.0 = 0% and 1.0 = 100%.

Dispose()

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Declaration

public void Dispose()

Dispose(bool)

Dispose of the object

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Declaration

protected virtual void Dispose(bool disposing)

Parameters

Type	Name	Description
System.Boolean	disposing	Is disposing