Hello.
I’m a Kinetic Artist & working on a kinetic sculpture.
in this project I’m using ESP32, TB6600 stepper driver, NEMA 17 stepper motor, couple of relays, touch switch & a liner potentiometer.
the concept is to control stepper motor speed using a liner potentiometer while a touch switch is there to reverse the direction of stepper. I was using Arduino nano earlier & just upgraded my system to ESP32 as I wanted it to be connected & controlled by my smartphone & couple of other advantages I can have with ESP32.
here is the code I’m using which works fine with ESP32 & Arduino both.
I’m using AccelStepper library to control stepper.
Now my question is how can I run this this sketch with Blynk?
In addition I would like it to be running with both physical input switches & blynk together.
#include <AccelStepper.h>
#define pulsePin 18
#define dirPin 19
#define speedPin 15
#define touchPin 4
#define led 2
int ppr = 6400; // microsteps
float maxtpr = 30; // maximum time/rotation
float mintpr = 2; // minimum time/rotation
float maxrpm = (60/mintpr); // maximum rpm
float minrpm = (60/maxtpr); // minimum rpm
float maxpps = ((maxrpm*ppr)/60); // maximum speed in pulse/second
float minpps = ((minrpm*ppr)/60); // minimum speed in pulse/second
float Speed;
bool direction = true;
const int numReadings = 200;
int readings[numReadings];
int readIndex = 0;
int total = 0;
int average = 0;
int touchState;
int lasttouchState = LOW;
unsigned long lastDebounceTime = 0;
unsigned long debounceDelay = 0;
AccelStepper wave (1,pulsePin,dirPin);
void setup(){
pinMode (led, OUTPUT);
for (int thisReading = 0; thisReading < numReadings; thisReading++)
{
readings[thisReading] = 0;
}
Serial.begin (115200);
Serial.print ("Microsteps = ");
Serial.println (ppr);
Serial.print ("Max speed (pps) = ");
Serial.println (maxpps);
Serial.print ("Min speed (pps) = ");
Serial.println (minpps);
Serial.print ("Max speed (rpm) = ");
Serial.println (maxrpm);
Serial.print ("Min speed (rpm) = ");
Serial.println (minrpm);
Serial.print ("Max Time/rotation = ");
Serial.println (maxtpr);
Serial.print ("Min Time/rotation = ");
Serial.println (mintpr);
Serial.println ("");
}
void loop() {
total = total - readings[readIndex];
readings[readIndex] = analogRead(speedPin);
total = total + readings[readIndex];
readIndex = readIndex + 1;
if (readIndex >= numReadings)
{
readIndex = 0;
}
average = total / numReadings;
Speed = map(average,0,4095,minpps,maxpps);
int reading = digitalRead(touchPin);
if (reading != lasttouchState) {
lastDebounceTime = millis();
}
if ((millis() - lastDebounceTime) > debounceDelay)
{
if (reading != touchState)
{
touchState = reading;
if (touchState == HIGH)
{
digitalWrite (led, HIGH);
direction = !direction;
}
if (touchState == LOW)
{
digitalWrite (led, LOW);
}
}
}
if (direction == true) {Speed = Speed;}
if (direction == false) {Speed = -Speed;}
wave.setMaxSpeed(Speed);
wave.setSpeed(Speed);
wave.runSpeed();
}
) is to move all of that code out of your void loop.