How to calibrate a continuous rotation servo using NanoPlayBoard

September 30, 2016

This article shows you how to calibrate a continuous rotation servo using NanoPlayBoard. You can use the onboard potentiometer to move a servo to a specific degree.

Inventory

• NanoPlayBoard.
• 9v battery.
• Continuous rotation servo.
• Screwdriver.

Sketch

Upload this sketch on the NanoPlayBoard:

#include <NanoPlayBoard.h>

NanoPlayBoard board;

void setup() {

}

void loop() {
  int value = board.potentiometer.scaleTo(0, 180);
  board.ledmatrix.printInLandscape(value);
  board.servo[1].to(value);
}

The source code of this sketch is available on GitHub.

Set up connections

Step 1

Connect the servo to the NanoPlayBoard using the row of three male pins named as p4.

Step 2

Connect the battery to the power socket on the NanoPlayBoard.

Calibration process

• Turn the onboard potentiometer until the 90 value is displayed on the led matrix.
• The servo should stop when it receives a signal for 90 degrees. If your servo is still rotating you have to use a small Phillips head screwdriver and turn the potentiometer on the continuous rotation servo until it stop.

Video

Resources

• Hobby Servo Tutorial. Sparkfun.