本帖最后由 青梅煮猹 于 2018-5-10 09:09 编辑
板子是mega2560，接线图如下(5V-VCC GND-GND SDA-SDA SCL-SCL）
V+接口接了外部电源
现在问题是下载驱动板附带的例程之后舵机毫无反应，连颤动都没有，网上有人说是因为I2C地址不是0X40而是0X80但是我改了之后也没有任何效果，希望能有大神解答一下，折腾了一晚上舵机都没动现在很绝望
例程如下：
/***************************************************
This is an example for our Adafruit 16-channel PWM & Servo driver
Servo test - this will drive 16 servos, one after the other
Pick one up today in the adafruit shop!
------> http://www.adafruit.com/products/815
These displays use I2C to communicate, 2 pins are required to
interface. For Arduino UNOs, thats SCL -> Analog 5, SDA -> Analog 4
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>
// called this way, it uses the default address 0x40
Adafruit_PWMServoDriver pwm = Adafruit_PWMServoDriver();
// you can also call it with a different address you want
//Adafruit_PWMServoDriver pwm = Adafruit_PWMServoDriver(0x41);
// Depending on your servo make, the pulse width min and max may vary, you
// want these to be as small/large as possible without hitting the hard stop
// for max range. You'll have to tweak them as necessary to match the servos you
// have!
#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)
// our servo # counter
//uint8_t servonum = 0;
void setup() {
Serial.begin(9600);
Serial.println("16 channel Servo test!");
pwm.begin();
pwm.setPWMFreq(60); // Analog servos run at ~60 Hz updates
}
// you can use this function if you'd like to set the pulse length in seconds
// e.g. setServoPulse(0, 0.001) is a ~1 millisecond pulse width. its not precise!
void setServoPulse(uint8_t n, double pulse) {
double pulselength;
pulselength = 1000000; // 1,000,000 us per second
pulselength /= 60; // 60 Hz
Serial.print(pulselength); Serial.println(" us per period");
pulselength /= 4096; // 12 bits of resolution
Serial.print(pulselength); Serial.println(" us per bit");
pulse *= 1000;
pulse /= pulselength;
Serial.println(pulse);
pwm.setPWM(n, 0, pulse);
}
void loop() {
// Drive each servo one at a time
//Serial.println(servonum);
for (uint16_t pulselen = SERVOMIN; pulselen < SERVOMAX; pulselen++) {
pwm.setPWM(0, 0, pulselen);
pwm.setPWM(1, 0, pulselen);
pwm.setPWM(2, 0, pulselen);
pwm.setPWM(3, 0, pulselen);
pwm.setPWM(4, 0, pulselen);
pwm.setPWM(5, 0, pulselen);
pwm.setPWM(6, 0, pulselen);
pwm.setPWM(7, 0, pulselen);
pwm.setPWM(8, 0, pulselen);
pwm.setPWM(9, 0, pulselen);
pwm.setPWM(10, 0, pulselen);
pwm.setPWM(11, 0, pulselen);
pwm.setPWM(12, 0, pulselen);
pwm.setPWM(13, 0, pulselen);
pwm.setPWM(14, 0, pulselen);
}
delay(500);
for (uint16_t pulselen = SERVOMAX; pulselen > SERVOMIN; pulselen--) {
pwm.setPWM(0, 0, pulselen);
pwm.setPWM(0, 0, pulselen);
pwm.setPWM(1, 0, pulselen);
pwm.setPWM(2, 0, pulselen);
pwm.setPWM(3, 0, pulselen);
pwm.setPWM(4, 0, pulselen);
pwm.setPWM(5, 0, pulselen);
pwm.setPWM(6, 0, pulselen);
pwm.setPWM(7, 0, pulselen);
pwm.setPWM(8, 0, pulselen);
pwm.setPWM(9, 0, pulselen);
pwm.setPWM(10, 0, pulselen);
pwm.setPWM(11, 0, pulselen);
pwm.setPWM(12, 0, pulselen);
pwm.setPWM(13, 0, pulselen);
pwm.setPWM(14, 0, pulselen);
}
delay(500);
}
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发表于 2018-3-2 20:53
楼主