#SIMPLE SERVO MOTOR ARDUINO CODE HOW TO#
#SIMPLE SERVO MOTOR ARDUINO CODE CODE#

Then the analog value for the servo is calculated by dividing the pulse wide by 1,000,000 to convert the value to us per second and multiplied with the frequency and 4096 for a 12 bit resolution. First the pulse with is calculated between 0 degree and 180 degrees depending on the minimum and maximum pulse width with the map function. Now we create the function pulseWidth to calculate the analog value for the motor depending on the desired angle. Therefore we do not need a loop function. To find the optimal value for MAX_PULSE_WIDTH, set the angle to 180īecause we only want to parameterize the servo motor, we need this one iteration from the setup function and have to change the value of MIN_PULSE_WIDTH to get the 0 degree position.

To find the optimal value for MIN_PULSE_WIDTH, set the angle to 0.

Function to specify the angle: pulseWidth(angle) where angle can be between 0 and 180.

The numbers are printed on the board starting with 0 up to 15. Read the button input and move your servo accordingly.

#SIMPLE SERVO MOTOR ARDUINO CODE CODE#

On which position of the PCA9685 is the servo connected. In theory, your Arduino servo catapult code will do the following: Read the analog input and compare it to your threshold range.

In the setup function the PWM object that we created previously is activated with the frequency of 50Hz. Also we control the servo motor with the setPWM function of the pwm object. You find this information on the data sheet of your motor. Nearly all servos use a frequency of 50Hz. In this step you need to tweak the parameters MIN_PULSE_WIDTH and set the parameter MAX_PULSE_WIDTH to a fixed value. feed ( 'servo' ) In the setup function, we attach a function called handleMessage to the servofeed, which will be called whenever your device receives messages for that feed. To find the right I2C HEX address you can use the I2C HEX code scanner in this article. // create an instance of the servo class Servo servo // set up the servo feed AdafruitIOFeed servofeed io. Then we create an ServoDriver object called pwm with the corresponding I2C HEX address, that is in my case 0x40.

#SIMPLE SERVO MOTOR ARDUINO CODE HOW TO#

If you do not know how to install a library you find here a tutorial.įirst we include the libraries Wire.h to use the I2C communication and the Adafruit_PWMServoDriver to manage the CA9685 16-Channel Servo Driver board. To control the PCA9685 we use the Adafruit_PWMServoDriver library.

Simple servo motor arduino code