#include <Servo.h>
const int SPEEDO_PIN = A0;
const int RPM_PIN = A1;
const int FUEL_PIN = A5;
const int LEFT_INDICATOR = A2;
const int RIGHT_INDICATOR = A3;
const int PARKING_BREAK = A4;
const int FUEL_WARNING = 12;
// defines servo names
Servo speedo;
Servo rpm;
Servo fuel;
Servo cruise;
#define PACKET_SYNC 0xFF
#define PACKET_VER 2
#define SERVO_DIR_NORMAL false
#define SERVO_DIR_INVERT true
int serial_byte;
void setup()
{
Serial.begin(115200);
speedo.attach(SPEEDO_PIN);
speedo.write(180);
rpm.attach(RPM_PIN);
rpm.write(180);
fuel.attach(FUEL_PIN);
fuel.write(40);
cruise.write(180);
pinMode(LEFT_INDICATOR, OUTPUT);
pinMode(RIGHT_INDICATOR, OUTPUT);
pinMode(PARKING_BREAK, OUTPUT);
pinMode(FUEL_WARNING, OUTPUT);
//range-splitter LED's
pinMode(22, OUTPUT);
pinMode(24, OUTPUT);
pinMode(26, OUTPUT);
digitalWrite(LEFT_INDICATOR, 0);
digitalWrite(RIGHT_INDICATOR, 0);
digitalWrite(PARKING_BREAK, 0);
digitalWrite(FUEL_WARNING, 0);
delay(600);
speedo.write(0);
rpm.write(0);
fuel.write(0);
digitalWrite(LEFT_INDICATOR, 1);
digitalWrite(RIGHT_INDICATOR, 1);
digitalWrite(PARKING_BREAK, 1);
digitalWrite(FUEL_WARNING, 1);
digitalWrite(22, 1);
digitalWrite(24, 1);
digitalWrite(26, 1);
delay(600);
speedo.write(180);
rpm.write(180);
fuel.write(85);
digitalWrite(LEFT_INDICATOR, 0);
digitalWrite(RIGHT_INDICATOR, 0);
digitalWrite(PARKING_BREAK, 0);
digitalWrite(FUEL_WARNING, 0);
digitalWrite(22, 0);
digitalWrite(24, 0);
digitalWrite(26, 0);
delay(1000);
}
void read_serial_byte_set_servo(Servo& servo, bool invert)
{
serial_byte = Serial.read();
serial_byte = (serial_byte < 0) ? 0 : ((serial_byte > 180) ? 180 : serial_byte);
if (invert)
servo.write(180 - serial_byte);
else
servo.write(serial_byte);
}
void read_serial_byte_set_servo_fuel(Servo& servo, bool invert)
{
serial_byte = Serial.read();
serial_byte = (serial_byte < 0) ? 0 : ((serial_byte > 180) ? 180 : serial_byte);
if (invert)
servo.write(85 - serial_byte); //set lower than the tach and speedo to limit movement.
else
servo.write(serial_byte);
}
void skip_serial_byte()
{
(void)Serial.read();
}
void digitalWriteFromBit(int port, int value, int shift)
{
digitalWrite(port, (value >> shift) & 0x01);
}
void loop()
{
if (Serial.available() < 16)
return;
serial_byte = Serial.read();
if (serial_byte != PACKET_SYNC)
return;
serial_byte = Serial.read();
if (serial_byte != PACKET_VER)
{
// lcd.clear();
// lcd.print("PROTOCOL VERSION ERROR");
return;
}
read_serial_byte_set_servo(speedo, SERVO_DIR_INVERT); // Speed
read_serial_byte_set_servo(rpm, SERVO_DIR_INVERT); // RPM
skip_serial_byte(); // Brake air pressure
skip_serial_byte(); // Brake temperature
read_serial_byte_set_servo_fuel(fuel, SERVO_DIR_INVERT); // Fuel ratio
skip_serial_byte(); // Oil pressure
skip_serial_byte(); // Oil temperature
skip_serial_byte(); // Water temperature
skip_serial_byte(); // Battery voltage
if (cruise.read() < 180)
{
}
if (cruise.read() > 179)
{
}
// Truck lights byte
serial_byte = Serial.read();
digitalWriteFromBit(LEFT_INDICATOR, serial_byte, 5);
digitalWriteFromBit(RIGHT_INDICATOR, serial_byte, 4);
// Warning lights bytes
serial_byte = Serial.read();
digitalWriteFromBit(PARKING_BREAK, serial_byte, 7);
digitalWriteFromBit(FUEL_WARNING, serial_byte, 3);
// Enabled flags
serial_byte = Serial.read();
// Text length
int text_len = Serial.read();
// Followed by text
if (0 < text_len && text_len < 127)
{
for (int i = 0; i < text_len; ++i)
{
while (Serial.available() == 0) // Wait for data if slow
{
delay(2);
}
}
}
}
so here is what i have going on... i have a ford expedition dashboard that i picked up from a flea market. It has 6 I-believe-to-be air core stepper motors. I bought 6 Polulu A4988 step sticks to control them. The code that I have is meant to be used for servo motors to drive the needles of the dash, but instead of using servos, i would like to use the steppers that are already on the dash. I just need help with the coding now that i know it is not easily possible to control the stepper motors like a servo. This is my first time using stepper motors and stepper motor drivers, so I don't really know what I'm doing other than a little bit of research. I don't know how to change the code so that i can use the steppers in place of the servos without screwing everything up. I could attach some pictures if you would like. 