mrwildbob
Jul 16, 2017
#10466
Has anyone had any luck with writing arduino code to control the steppers with out using G-Code/PC? Here is what I am trying to do. I would like to control two steppers (X & Y) with a joystick. This is not a CNC machine but using it as a learning tool for some students. Long story short, I would like to interface the joystick with the gShield and move the motors. Acceleration and speed control would be a plus.
Here is the code I found somewhere on how to just turn the stepper. I'm not sure how to control the speed.
void setup() {
pinMode(8, OUTPUT);
digitalWrite(8, LOW);
pinMode(5, OUTPUT);
pinMode(2, OUTPUT);
digitalWrite(5, HIGH);
digitalWrite(2, LOW);
}
void loop() {
digitalWrite(2, HIGH);
delay(1);
digitalWrite(2, LOW);
delay(1);
}
ByteC
Aug 25, 2018
#11116
yes, tried it today.
#include <AccelStepper.h>
#include <stdint.h>
#initial example captured from from mechapro.de
const uint8_t disablePin = 8;
// pin assignment X-Axis
//const uint8_t stepPin = 2;
//const uint8_t dirPin = 5;
// pin assignment Y-Axis
//const uint8_t stepPin = 3;
//const uint8_t dirPin = 6;
// pin assignment Z-Axis
const uint8_t stepPin = 4;
const uint8_t dirPin = 7;
// actuate stepper motor
void forwardstep() {
digitalWrite(dirPin, HIGH);
digitalWrite(stepPin, LOW);
delayMicroseconds(1);
digitalWrite(stepPin, HIGH);
}
void backwardstep() {
digitalWrite(dirPin, LOW);
digitalWrite(stepPin, LOW);
delayMicroseconds(1);
digitalWrite(stepPin, HIGH);
}
// setting up the AccelStepper library with custom actuator functions
AccelStepper stepper(forwardstep, backwardstep); // use functions to step
void setup()
{
// configuration of gpio interface
pinMode(stepPin, OUTPUT);
//pinMode(errorPin, INPUT_PULLUP);
pinMode(dirPin, OUTPUT);
pinMode(disablePin, OUTPUT);
// pinMode(sleepPin, OUTPUT);
digitalWrite(disablePin, HIGH);
// ramp parameters
stepper.setMaxSpeed(2000);
stepper.setAcceleration(20000);
}
int dir = 1;
void loop()
{
if (stepper.distanceToGo() == 0)
{
// Random change to speed, position and acceleration
// Make sure we dont get 0 speed or accelerations
delay(10);
stepper.move(dir * 300);
dir = dir * -1;
}
stepper.run();
}
ByteC
Aug 26, 2018
#11117
oops, please set
digitalWrite(disablePin, HIGH);
to
digitalWrite(disablePin, LOW);
to enable the stepper motors.
And set the 3rd line to