Hi, everybody
I am working on a project related to a motor and a button.
When I send the character "1" to the serial number:
You need to check if the button is pressed. If the button is pressed:
The motors rotate in the opposite direction for 700 milliseconds and must stop.
When I send the character "2" to the serial number:
You need to check if the button is pressed. If not pressed, then:
The motors rotate forward until the button is pressed, and then should stop.
So, I put together a sample code here and stopped. Help, please:
#define PWMA 5
#define AIN1 4
#define AIN2 7
#define STBY 6
int motorSpeed = 255;
void setup() {
Serial.begin(9600);
pinMode(PWMA, OUTPUT);
pinMode(AIN1, OUTPUT);
pinMode(AIN2, OUTPUT);
pinMode(STBY, OUTPUT);
pinMode(13, INPUT_PULLUP);
digitalWrite(STBY, HIGH);
}
void loop() {
if (Serial.available() > 0) {
char data = Serial.read();
if (data == '1') {
if (digitalRead(13) == 1) { //if the button is pressed then
Serial.println("close1");
digitalWrite(AIN2, HIGH);
analogWrite(PWMA, motorSpeed);
delay(700);
digitalWrite(AIN2, LOW);
}
else {
Serial.println("Nothing to do");
}
}
else if (data == '2') {
if (digitalRead(13) == 0) { //if the button is not pressed then
Serial.println("open1");
digitalWrite(AIN1, HIGH);
analogWrite(PWMA, motorSpeed);
if (digitalRead(13) == 1) { // stop the motor when the button is pressed
Serial.println("motor_stop");
digitalWrite(AIN1, LOW);
}
}
}
}
}
1 pin of the button is connected to GND, the second pin is connected to pin 13
The button function not work for me if there is an error in it?
If you want your problem to be solved then reply
You didn't send the code, you just duplicated my code. It didn't work initially
#define PWMA 5
#define AIN1 4
#define AIN2 7
#define STBY 6
int motorSpeed = 255;
void setup() {
Serial.begin(9600);
pinMode(PWMA, OUTPUT);
pinMode(AIN1, OUTPUT);
pinMode(AIN2, OUTPUT);
pinMode(STBY, OUTPUT);
pinMode(13, INPUT_PULLUP);
digitalWrite(STBY, HIGH);
}
void loop() {
if (Serial.available() > 0) {
char data = Serial.read();
if (data == '1') {
if (digitalRead(13) == 1) { //if the button is pressed then
Serial.println("close1");
digitalWrite(AIN2, HIGH);
analogWrite(PWMA, motorSpeed);
delay(700);
digitalWrite(AIN2, LOW);
}
else {
Serial.println("Nothing to do");
}
}
else if (data == '2') {
if (digitalRead(13) == 0) { //if the button is not pressed then
Serial.println("open1");
digitalWrite(AIN1, HIGH);
analogWrite(PWMA, motorSpeed);
}
if (digitalRead(13) == 1) { // stop the motor when the button is pressed
Serial.println("motor_stop");
digitalWrite(AIN1, LOW);
}
}
}
}
So you want that when you type 2 and then press the button the motor should stop
When I send the character "2" to the serial number:
You need to check if the button is pressed. If not pressed, then:
The motors rotate forward until the button is pressed, and then should stop.
#define PWMA 5
#define AIN1 4
#define AIN2 7
#define STBY 6
int motorSpeed = 255;
void setup() {
Serial.begin(9600);
pinMode(PWMA, OUTPUT);
pinMode(AIN1, OUTPUT);
pinMode(AIN2, OUTPUT);
pinMode(STBY, OUTPUT);
pinMode(13, INPUT_PULLDOWN);
digitalWrite(STBY, HIGH);
}
void loop() {
if (Serial.available() > 0) {
char data = Serial.read();
if (data == '1') {
if (digitalRead(13) == 1) { //if the button is pressed then
Serial.println("close1");
digitalWrite(AIN2, HIGH);
analogWrite(PWMA, motorSpeed);
delay(700);
digitalWrite(AIN2, LOW);
}
else {
Serial.println("Nothing to do");
}
}
else if (data == '2') {
if (digitalRead(13) == 0) { //if the button is not pressed then
Serial.println("open1");
digitalWrite(AIN1, HIGH);
analogWrite(PWMA, motorSpeed);
}
if (digitalRead(13) == 1) { // stop the motor when the button is pressed
Serial.println("motor_stop");
digitalWrite(AIN1, LOW);
}
}
}
}
Try this
"1" - does not work at all
"2" - spinning but not stopped
And here the error appears
Problem: When I wrote in Serial "2" The engine immediately stops if you don't even press the button
#define PWMA 5
#define AIN1 4
#define AIN2 7
#define STBY 6
int motorSpeed = 255;
void setup() {
Serial.begin(9600);
pinMode(PWMA, OUTPUT);
pinMode(AIN1, OUTPUT);
pinMode(AIN2, OUTPUT);
pinMode(STBY, OUTPUT);
pinMode(13, INPUT_PULLUP);
digitalWrite(STBY, HIGH);
}
void loop() {
if (Serial.available() > 0) {
char data = Serial.read();
if (data == '1') {
if (digitalRead(13) == LOW) { // if the button is pressed
Serial.println("Button pressed, scrolling back");
digitalWrite(AIN2, HIGH);
analogWrite(PWMA, motorSpeed);
delay(700);
digitalWrite(AIN2, LOW);
} else {
Serial.println("Button not pressed");
}
} else if (data == '2') {
Serial.println("Rotating forward");
digitalWrite(AIN1, HIGH);
analogWrite(PWMA, motorSpeed);
while (digitalRead(13) == HIGH) {
// Continuously check button state
}
Serial.println("Button pressed, motor stop");
digitalWrite(AIN1, LOW);
}
}
}
Help is possible when you begin your project from the bottom, meaning write code to only test the switches. When that works as your like, the add the motor stuff. Don't do projects from the TOP downward!
I can not confirm this. I can see the "Rotating Forward" holding until the button is pressed. You can see the 7 second hold period before the press.
//Enter '1' with button not pressed
09:26:37.967 -> Button not pressed
//Enter '1' with button pressed
09:27:28.234 -> Button pressed, scrolling back
//Enter '2' with button not pressed
09:27:43.569 -> Rotating forward
//press button
09:27:50.990 -> Button pressed, motor stop
Can you see the "Button not pressed" message when you enter 1 and the button is not pressed? This should verify the wiring of the button so that the with input pullup it is reading high without being pressed.
What Arduino is running this code? It's possible that if the internal led is on pin 13 it may be affecting how the button is working. Try a different pin.
