HC 05 is connected but on smartphone it is showing MANY ERRORS LIKE BELOW
also 1 more error is there
ERROR 516: Unable to write:Broken pipe
thANK U
#define enA 9
#define in1 4
#define in2 5
#define enB 10
#define in3 6
#define in4 7
int xAxis, yAxis;
int x = 0;
int y = 0;
int motorSpeedA = 0;
int motorSpeedB = 0;
void setup() {
pinMode(enA, OUTPUT);
pinMode(enB, OUTPUT);
pinMode(in1, OUTPUT);
pinMode(in2, OUTPUT);
pinMode(in3, OUTPUT);
pinMode(in4, OUTPUT);
Serial.begin(38400); // Default communication rate of the Bluetooth module
}
void loop() {
// Default value - no movement when the Joystick stays in the center
xAxis = 510;
yAxis = 510;
// Read the incoming data from the Smartphone Android App
while (Serial.available() >= 1) {
x = Serial.read();
delay(10);
y = Serial.read();
}
delay(10);
// Makes sure we receive corrent values
if (x > 60 & x < 220) {
xAxis = map(x, 220, 60, 1023, 0); // Convert the smartphone X and Y values to 0 - 1023 range, suitable motor for the motor control code below
}
if (y > 60 & y < 220) {
yAxis = map(y, 220, 60, 0, 1023);
}
// Y-axis used for forward and backward control
if (yAxis < 470) {
// Set Motor A backward
digitalWrite(in1, HIGH);
digitalWrite(in2, LOW);
// Set Motor B backward
digitalWrite(in3, HIGH);
digitalWrite(in4, LOW);
// Convert the declining Y-axis readings for going backward from 470 to 0 into 0 to 255 value for the PWM signal for increasing the motor speed
motorSpeedA = map(yAxis, 470, 0, 0, 255);
motorSpeedB = map(yAxis, 470, 0, 0, 255);
}
else if (yAxis > 550) {
// Set Motor A forward
digitalWrite(in1, LOW);
digitalWrite(in2, HIGH);
// Set Motor B forward
digitalWrite(in3, LOW);
digitalWrite(in4, HIGH);
// Convert the increasing Y-axis readings for going forward from 550 to 1023 into 0 to 255 value for the PWM signal for increasing the motor speed
motorSpeedA = map(yAxis, 550, 1023, 0, 255);
motorSpeedB = map(yAxis, 550, 1023, 0, 255);
}
// If joystick stays in middle the motors are not moving
else {
motorSpeedA = 0;
motorSpeedB = 0;
}
// X-axis used for left and right control
if (xAxis < 470) {
// Convert the declining X-axis readings from 470 to 0 into increasing 0 to 255 value
int xMapped = map(xAxis, 470, 0, 0, 255);
// Move to left - decrease left motor speed, increase right motor speed
motorSpeedA = motorSpeedA - xMapped;
motorSpeedB = motorSpeedB + xMapped;
// Confine the range from 0 to 255
if (motorSpeedA < 0) {
motorSpeedA = 0;
}
if (motorSpeedB > 255) {
motorSpeedB = 255;
}
}
if (xAxis > 550) {
// Convert the increasing X-axis readings from 550 to 1023 into 0 to 255 value
int xMapped = map(xAxis, 550, 1023, 0, 255);
// Move right - decrease right motor speed, increase left motor speed
motorSpeedA = motorSpeedA + xMapped;
motorSpeedB = motorSpeedB - xMapped;
// Confine the range from 0 to 255
if (motorSpeedA > 255) {
motorSpeedA = 255;
}
if (motorSpeedB < 0) {
motorSpeedB = 0;
}
}
// Prevent buzzing at low speeds (Adjust according to your motors. My motors couldn't start moving if PWM value was below value of 70)
if (motorSpeedA < 70) {
motorSpeedA = 0;
}
if (motorSpeedB < 70) {
motorSpeedB = 0;
}
analogWrite(enA, motorSpeedA); // Send PWM signal to motor A
analogWrite(enB, motorSpeedB); // Send PWM signal to motor B
}
Please,.. ALWAYS format your code.. its insanely hard to read when posted like that. (read the forums rules)
As for the first post however,.. and your error..
I dont believe you should be using a BYTE type.... since a byte is 0-255 value range
"An unsigned byte (assuming 8-bit) is from 0 to 255"
update:
Would have been nice if you gave all thew details.
1.) Looks like you are using MIT App Inventor 2 for you mobile app side of things? (thanks for telling us)
2.) Did you even bother to search yourself? "Broken Pipe" means you has lost connection to your BT device. And you are trying to do 'something' when a connection is no longer established.
Some links: