Photon + PCA9685 Library

Getting Started
8

Hello all,

I have a custom board using the PCA9685. I have CA LED’s on the board. Powering this setup using VIN on the photon for testing. The LED’s light up but i cannot change colors. I have in the loop a simple blink test. The device is being detected by the i2cScanner. Any thoughts on what im doing wrong?

#include "Adafruit_PWMServoDriver.h"
#include "Particle.h"

SYSTEM_MODE(MANUAL);
SYSTEM_THREAD(ENABLED);

void startUp() { WiFi.selectAntenna(ANT_AUTO); }

STARTUP(startUp());
Adafruit_PWMServoDriver pwm = Adafruit_PWMServoDriver(0x55);

void setup() {
  pwm.begin();
  pwm.setPWMFreq(1000);
}

void loop() {

  for (size_t i = 0; i < 16; i++) {
    pwm.setPin(i, 0);
  }
  delay(2000);
  for (size_t i = 0; i < 16; i++) {
    pwm.setPin(i, 4095);
  }
  delay(2000);
}

schematic attached
image

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