Advanced DC motor Controller
Basic example based on the › simple DC motor controller using the built-in L293 chip of the SensorAktor-Shield. One of the built-in switches is used to set the direction of the motor. Have a look on the › switch LED example how to use a switch button.
/* advanced motor controller
*
* control speed and direction of a motor
*
* SensorAktor Workshop
* Lab3 2008
* Kunsthochschule fuer Medien Koeln
* Academy of Media Arts Cologne
* http://interface.khm.de
* pin mapping SensorAktor Shield
* import SensorAktor.h to get already defined mapping
*
* analog inputs: analog0 = pin0, analog1 = pin1, analog2 = pin2,
* analog3 = pin3, analog4 = pin4, analog5 = pin5
* built-in poti: poti = pin5
* amplified input: mic = pin0
* switches: switch1 = pin1, switch2 = pin2, switch3 = pin3
* leds: led1 = pin3, led2 = pin5, led3 = pin6
* power outs: out1 = pin3, out2 = pin5, out3 = pin6
* motor outs: motor1_1 = pin8, motor1_2 = pin13, motor2_1 = pin11, motor2_2 = pin12
* motor pwms: pwmMotor1 = pin10, pwmMotor2 = pin9
* servo outs: servo1 = pin2, servo2 = pin4, servo3 = pin7
*/
// import sensor aktor library for pin mapping
#include <SensorAktor.h>
// import motor library
#include <MotorL293.h>
// create instance for motor
MotorL293 myMotor;
// poti value
int potiValue = 0;
// this block is executed one time when programm starts
void setup(){
// set pin modes
pinMode(switch1,INPUT);
// turn on pullup resistor for switch 1
digitalWrite(switch1, HIGH);
// attach pins to motor (motor pin1, motor pin2, pwm pin motor)
myMotor.attach(motor1_1, motor1_2, pwmMotor1);
}
// this block is executed in a loop after setup is called one time
void loop(){
// read poti (value between 0 and 1023)
potiValue = analogRead(poti);
// scale poti value to use it with setPower (value between 0 and 254)
potiValue = map(potiValue, 0 , 1023, 0, 254);
// set speed of motor using poti value (value between 0 and 254)
myMotor.setPower(potiValue);
// use switch 1 to set direction of motor 1 (0=left, right=1)
if(digitalRead(switch1) == HIGH){
myMotor.setDirection(0);
}
else{
myMotor.setDirection(1);
}
}
Files needed
Since Arduino 0015 there are some problems with the old “SensorAktor.h” file.
Use this one instead.