I am extremely new to Arduino coding and have downloaded a sketch for the PCA9685 to use with model railroading and turnout control. When I verify the sketch I get several errors ... I don't even know how to resolve and could use some assistance. There are two sketches:
1:
/***************************************************
This sketch can be used to operate any number of turnouts on a
Model Railroad. Code blocks can be added to accomodate any number
of servos. This sketch uses only two servos for this demonstration.
The pushbutton can be replaced with a SPST switch
commonly used on a control panel. Three pin Bicolor LED can be used
in place of two seperate LEDs in each circuit.
10K Ohm pulldown resistor used on switch
330 Ohm resistor used on LEDs. One per pair of LEDs
Created 03/02/2019 by Tom Kvichak
https://tomstrainsandthings.com/
Additional Arduino Projects can be found at the above web address
****************************************************/
#include <Wire.h>
#include <Adafruit_PWMServoDriver.h>
Adafruit_PWMServoDriver pwm = Adafruit_PWMServoDriver();
int buttonPin0 = 2; // Can add as many buttons as needed
int ledPin0C = 3; // C designates Closed position of turnout
int ledPin0T = 4; // T designates Thrown position of turnout
int buttonState0 = 0;
int buttonPin1 = 5;
int ledPin1C = 6;
int ledPin1T = 7;
int buttonState1 = 0;
void setup() {
Serial.begin(9600);
Serial.println("pca9685_TurnoutFinal!");
pwm.begin();
pwm.setPWMFreq(60);
delay(30);
pinMode(ledPin0C, OUTPUT);
pinMode(ledPin0T, OUTPUT);
pinMode(buttonPin0, INPUT);
pinMode(ledPin1C, OUTPUT);
pinMode(ledPin1T, OUTPUT);
pinMode(buttonPin1, INPUT);
}
void loop() {
///////////
buttonState0 = digitalRead(buttonPin0);
if (buttonState0 == HIGH) {
pwm.setPWM(0, 0, 370);
digitalWrite(ledPin0T, LOW);
digitalWrite(ledPin0C, HIGH);
}
else {
pwm.setPWM(0, 0, 285);
digitalWrite(ledPin0C, LOW);
digitalWrite(ledPin0T, HIGH);
}
//////////
buttonState1 = digitalRead(buttonPin1);
if (buttonState1 == HIGH) {
pwm.setPWM(1, 0, 370);
digitalWrite(ledPin1T, LOW);
digitalWrite(ledPin1C, HIGH);
}
else {
pwm.setPWM(1, 0, 285);
digitalWrite(ledPin1C, LOW);
digitalWrite(ledPin1T, HIGH);
}
//////////
}
2:
/***************************************************
This is an example for our Adafruit 16-channel PWM & Servo driver
Servo test - this will drive 8 servos, one after the other on the
first 8 pins of the PCA9685
Pick one up today in the adafruit shop!
------> http://www.adafruit.com/products/815
These drivers use I2C to communicate, 2 pins are required to
interface.
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
Written by Limor Fried/Ladyada for Adafruit Industries.
BSD license, all text above must be included in any redistribution
****************************************************/
#include <Wire.h>
#include <Adafruit_PWMServoDriver.h>
Adafruit_PWMServoDriver pwm = Adafruit_PWMServoDriver();
//Adafruit_PWMServoDriver pwm = Adafruit_PWMServoDriver(0x41);
#define SERVOMIN 110 // this is the 'minimum' pulse length count (out of 4096)
#define SERVOMAX 510 // this is the 'maximum' pulse length count (out of 4096)
// May have to adjust values to match your servos
// Test your servo with the procedures below
// our servo # counter
uint8_t servonum = 0;
void setup() {
Serial.begin(9600);
Serial.println("pca9685_TurnoutTest!");
pwm.begin();
pwm.setPWMFreq(60); // Analog servos run at ~60 Hz updates
delay(50);
}
///////////////////Functions//////////////////////
void driveMin() {
pwm.setPWM(servonum, 0, SERVOMIN); //Use to test low range
}
void driveMax() {
pwm.setPWM(servonum, 0, SERVOMAX); //Use to test high range
}
///////////////End Of Functions//////////////////
void loop() {
for( int angle =0; angle<181; angle +=15){ // testing only right now
delay(500);
pwm.setPWM(1, 0, convert2angle(angle) ); // May only need this for sweeping the servo
}
}
int convert2angle(int myang){
int pulse = map(myang,0, 180, SERVOMIN,SERVOMAX);// map angle of 0 to 180 to Servo min and Servo max
Serial.print("Angle/Pulse: ");Serial.print(myang);
Serial.print(" / "); Serial.println(pulse);
return pulse;
}
ERROR MESSAGES:
pca9685_TurnoutTest:23:25: error: redefinition of 'Adafruit_PWMServoDriver pwm'
Adafruit_PWMServoDriver pwm = Adafruit_PWMServoDriver();
^
C:\Users\wdhen\Documents\Arduino\libraries\Adafruit-PWM-Servo-Driver-Library-master\examples\pca9685_TurnoutFinal\pca9685_TurnoutFinal.ino:21:25: note: 'Adafruit_PWMServoDriver pwm' previously declared here
Adafruit_PWMServoDriver pwm = Adafruit_PWMServoDriver();
^
C:\Users\wdhen\Documents\Arduino\libraries\Adafruit-PWM-Servo-Driver-Library-master\examples\pca9685_TurnoutFinal\pca9685_TurnoutTest.ino: In function 'void setup()':
pca9685_TurnoutTest:35:6: error: redefinition of 'void setup()'
void setup() {
^
C:\Users\wdhen\Documents\Arduino\libraries\Adafruit-PWM-Servo-Driver-Library-master\examples\pca9685_TurnoutFinal\pca9685_TurnoutFinal.ino:33:6: note: 'void setup()' previously defined here
void setup() {
^
C:\Users\wdhen\Documents\Arduino\libraries\Adafruit-PWM-Servo-Driver-Library-master\examples\pca9685_TurnoutFinal\pca9685_TurnoutTest.ino: In function 'void loop()':
pca9685_TurnoutTest:52:6: error: redefinition of 'void loop()'
void loop() {
^
C:\Users\wdhen\Documents\Arduino\libraries\Adafruit-PWM-Servo-Driver-Library-master\examples\pca9685_TurnoutFinal\pca9685_TurnoutFinal.ino:48:6: note: 'void loop()' previously defined here
void loop() {
^
Using library Wire at version 1.0 in folder: C:\Program Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\hardware\arduino\avr\libraries\Wire
Using library Adafruit-PWM-Servo-Driver-Library-master at version 2.0.0 in folder: C:\Users\wdhen\Documents\Arduino\libraries\Adafruit-PWM-Servo-Driver-Library-master
exit status 1
redefinition of 'Adafruit_PWMServoDriver pwm'
