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PCA9685 16-Channel 12-bit I2C interface Servo PWM Driver

Specifications:

  • 5V compliant, and still talks to a 3.3V microcontroller
  • 6 “address select” pins for configuring up to 62 ICs on a single I2C bus
  • PWM frequency adjustable up to approximately 1.6kHz
  • 12-bit frequency resolution (equates to about 4µs resolution at 60Hz refresh rate)
  • Configurable as a push-pull or open-drain output
  • The output enables the pin available for outside-the-microcontroller “shut it down!” control.
SKU: RDNA-OP28.1

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413.00 (Inc. GST)
350.00 (+18% GST Extra)

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Description

You want to make a cool robot, maybe a hexapod walker, or maybe just a piece of art with a lot of moving parts. Or maybe you want to drive a lot of LEDs with precise PWM output. Then you realize that your microcontroller has a limited number of PWM outputs! What now? You could give up OR you could just get this handy PWM and Servo driver breakout.

When we saw this chip, we quickly realized what an excellent add-on this would be. Using only two pins, control 16 free-running PWM outputs! You can even chain up 62 breakouts to control up to 992 PWM outputs (which we would really like to see since it would be glorious)

  • It’s an i2c-controlled PWM driver with a built-in clock. That means that, unlike the TLC5940 family, you do not need to continuously send it signal tying up your microcontroller, its completely free running!
  • It is 5V compliant, which means you can control it from a 3.3V microcontroller and still safely drive up to 6V outputs (this is good for when you want to control white or blue LEDs with 3.4+ forward voltages)
  • 6 address select pins so you can wire up to 62 of these on a single i2c bus, a total of 992 outputs – that’s a lot of servos or LEDs
  • Adjustable frequency PWM up to about 1.6 KHz
  • 12-bit resolution for each output – for servos, that means about 4us resolution at 60Hz update rate
  • Configurable push-pull or open-drain output
  • Output enables the pin to quickly disable all the outputs

Packing List:

1 x PCA9685 16-Channel 12-bit I2C interface Servo PWM Driver

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