2CH Servo Motor Controller for DC Motor

Features

• Can be reprogram by FEETECH programmer
• Easy to control 2CH DC motor
• Control DC motor to bidirectional continuous rotation
• The speed is linear response to PWM
• Accepts four mounting screws
• Easy to interface with any Arduino microcontroller or PWM-capable device
• Weights only 3.5 g
• Apply to kinds of small mobile platform robot

Specification

• Weight: 3.5g
• Dimension (L*W*H): 34mm * 25mm * 7.5mm
• Controller: STM8F003F3P6
• Working Voltage Range: 4V~9V (2CH + and – connect together)
• Recommended Voltage: 6V
• IDLE Current: 10Ma
• 1CH Continuous Load Current: 1.3A
• Working Temperature: -5 °C- 60°C

Communication Protocol

The Servo motor controller is controlled through pulse width modulation.
Rotational speed and direction are determined by the duration of a high pulse,
in the 1000us–-2000us range.

In order for smooth rotation, the servo needs a 20 ms pause between pulses.
As the length of the pulse decreases from 1500us, the servo will gradually rotate faster in the counter-clockwise direction.

Likewise, as the length of the pulse increases from 1500us,
the servo will gradually rotate faster in the clockwise direction,
as can be seen in the figure below