PCA9685 16-Channel 12-Bit PWM Servo Driver Expand

PCA9685 16-Channel 12-Bit PWM Servo Driver



Control LEDs or even a robotic hexapod with the PCA9685 12-Bit PWM Servo Driver.

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Do you want to build a robot using lots of servo motors like a hexapod? Run out of PWM outputs on your micro or using a Raspberry Pi? Maybe you just want to control LEDs with 12-bits of PWM brightness levels? Then this is the module you have been looking for!

PCA9685 16-Channel 12-Bit PWM Servo Driver can help a lot when there are insufficient PWM output pins for the MCU in your project. The only condition is that the main control chip supports I2C communication, which means enabling the communication between the chip and PCA9685, so as to control multiple servos simultaneously.

PCA9685 Servo Driver Features

  • Contains the PCA9685 IC which is an I2C-controlled PWM driver with a built-in clock. It means, unlike the TLC5940 IC family, you do not need to continuously send it signals tying up your microcontroller; it's completely free running!

  • 5V compliant, which means you can control it from a 3.3V microcontroller and still safely drive up to 6V outputs (this is good when you want to control white or blue LEDs with 3.4+ forward voltages).

  • Support using only two pins to control 16 free-running PWM outputs – you can even chain up 62 breakouts to control up to 992 PWM outputs!

  • 3 pin connectors in groups of 4, so you can plug in 16 servos at one time (Servo plugs are slightly wider than 0.1" so you can only stack 4 next to each other on 0.1" header.

  • 12-bit resolution for each output - for servos, that means about 4us resolution at 60Hz update rate.


PCA9685 16-CHANNEL 12-BIT PWM SERVO DRIVER  -  Technical Specifications:

  • VCC Chip Supply

– 3 - 5V DC

  • Logic Signal Levels

– 3 - 5V DC

  • V+ Servo Supply

– 6V DC Max

  • Frequency

– 40 – 1000Hz

Additional Resources:

  • More details can be found in this handy tutorial.
  • For a video breakdown check out this video.

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PCA9685 16-Channel 12-Bit PWM Servo Driver

PCA9685 16-Channel 12-Bit PWM Servo Driver