Hacker Development

Arduino Kit Information: Micro Servo SD90

Back to Kits list

Micro Servo SD90

The Micro Servo is a device that has a shaft that can proportionally positioned. It’s output is 180 degrees. It runs on 5 or 6 volts. A single I/O pin is required to control the Servo.

The Servo is controlled by a signal that is PWM, Pule Width Modulated.

There is a pulse every 20 Milliseconds.
If this pulse is 1 millisecond long then the output shaft will be in the 0 degree position.
If this pulse is 1.5 milliseconds long then the output shaft will be in the 90 degree position.
If this pulse is 2 milliseconds long then the output shaft will be in the 180 degree position.
Any pulsewidth between will provide a position proportional to the pulse width.

Most servos that come with the Kits will have the following color wires:

• Brown - Ground
• Red - +V (5-6 volts)
• Orange - Signal (PWM)

The Spec Sheet is here