16-Channel PWM Servo Driver - PCA9685

Compatible with Arduino and Raspberry Pi

Easily add 16-channels of PWM to your microcontroller (Arduino, Raspberry Pi) using a simple I2C interface. Great for driving servo motors, LEDs, or any devices using PWM.

The I2C PWM controller contains a built-in clock, eliminating the need to update the signal from the microcontroller constantly. 5V compatible allows for control from 3.3V controllers. Safely drive outputs up to 6V or for controlling LEDs.

The unique I2C address is selectable through six solder pads on the board allowing up to 62 controllers on the single I2C bus. Each output supports 12-bit resolution proving for approximately 4uS at a 60Hz update rate. PWM frequency is adjustable from 40 Hz to 1.0 KHz.

Setting I2C Address

The base address of the board with no jumpers across any address pins is 0x40. As address pins A0 to A5 are connected, the board address will increase.

Examples:

• Base Address + 0 (0x40): Binary 000000 (no pins shorted)
• Base Address + 1 (0x41): Binary 000001 (short across pin A0)
• Base Address + 2 (0x42): Binary 000010 (short across pin A1)
• Base Address + 3 (0x43): Binary 000011 (short across pin A0 and pin A1)
• Base Address + 4 (0x44): Binary 000100 (short across pin A2)

Address adjustments can be made by adjusting the shorts across A0 to A5.