![]() Then we need to map that value to the servo motor angle. ![]() We first read the value of potentiometer. Then i attach the pin number 9 to my servo object: Music in the loop method. I initialize the serial monitor in arduino, so we can monitor the position of the servomotor. Also, i define a variable to store the value as val now in the setup method. As my servo, then i define the potentiometer value. We need to include servo wage header file to control our servo motor with pwm signals. I attached the servo motor arm to clearly view its movement Music now its time to code, our simple program in arduino wide, i open the arduino from the start menu Music. You can exchange these two wires to change the direction of servo motor, be sure to connect these three wires correctly before powering the arduino, never change the middle wire potentiometer to other pin. Zero pin of arduino uno connect other two wires to the common ground of arduino uno and to the 3.3 volts pin of arduino uno. Music now connect the potentiometers middle connector to the analog. Music also attach three male connector wires for three pins of potentiometer Music. This small development board will be handy for our testing attach the potentiometer to the development board. I use 100 kilo, ohms potentiometer to control the position of our mg 90 servo motor Music. Pin the pwm signal pin is colored in yellow for most servo motors connect the pwm signal pin to the pin 9 of arduino uno. Pin you can easily identify this pin by the red color in most servo motors, then connect brown or black colored common ground connector to the arduino unos ground. I attached some connectors to all three pins now: connect the servo motor plus or vcc, pin to the arduino uno 5 volts. A servo motor has three terminals vcc ground and pwm signal input. I use arduino uno to control our mg 90 servo motor in general. This servo motor is metal geared and can handle a low than the sg90 servo motor lets see how it works. Today we are going to play with arduino and mg90 servomotor.
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