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Adafruit LIbrary Reference
https://learn.adafruit.com/16-channel-pwm-servo-driver/library-reference
Forum post with wiring diagram
https://forums.adafruit.com/viewtopic.php?t=123020
#include <Wire.h>#include <Adafruit_PWMServoDriver.h>
// called this way, it uses the default address 0x40Adafruit_PWMServoDriver pwm = Adafruit_PWMServoDriver(0x40);// you can also call it with a different address you want//Adafruit_PWMServoDriver pwm = Adafruit_PWMServoDriver(0x41);
#define SERVOMIN 150 // This is the 'minimum' pulse length count (out of 4096)#define SERVOMAX 600 // This is the 'maximum' pulse length count (out of 4096)#define USMIN 600 // This is the rounded 'minimum' microsecond length based on the minimum pulse of 150#define USMAX 2400 // This is the rounded 'maximum' microsecond length based on the maximum pulse of 600
#define SERVO_FREQ 500 // Analog servos run at ~50 Hz updates
int servonum = 0;
void setup() { Serial.begin(9600); Serial.println("16 channel PWM test!");
pwm.begin(); //pwm.setOscillatorFrequency(27000000); pwm.setPWMFreq(SERVO_FREQ);
delay(10);}
void loop() { // Drive each servo one at a time using setPWM() Serial.println(servonum);
pwm.setPWM(servonum, 0, 4096); //Signal to for off delay(500);
pwm.setPWM(servonum, 4096, 0); //Signal for on! delay(500);
}
// called this way, it uses the default address 0x40Adafruit_PWMServoDriver pwm = Adafruit_PWMServoDriver(0x40);// you can also call it with a different address you want//Adafruit_PWMServoDriver pwm = Adafruit_PWMServoDriver(0x41);
#define SERVOMIN 150 // This is the 'minimum' pulse length count (out of 4096)#define SERVOMAX 600 // This is the 'maximum' pulse length count (out of 4096)#define USMIN 600 // This is the rounded 'minimum' microsecond length based on the minimum pulse of 150#define USMAX 2400 // This is the rounded 'maximum' microsecond length based on the maximum pulse of 600
#define SERVO_FREQ 500 // Analog servos run at ~50 Hz updates
int servonum = 0;
void setup() { Serial.begin(9600); Serial.println("16 channel PWM test!");
pwm.begin(); //pwm.setOscillatorFrequency(27000000); pwm.setPWMFreq(SERVO_FREQ);
delay(10);}
void loop() { // Drive each servo one at a time using setPWM() Serial.println(servonum);
pwm.setPWM(servonum, 0, 4096); //Signal to for off delay(500);
pwm.setPWM(servonum, 4096, 0); //Signal for on! delay(500);
}
Hardware components :
12V solenoids -- LINK
Adafruit 16 channel i2c driver -- LINK
Mosfet -- IRF610 -- LINK
Diode -- 1n4148 -- LINK