If you want to make a robot which has lots of moving parts or if you want to control too many LEDs with PWM outputs, then the limited PWM outputs of your microcontroller would be a big problem for you. To overcome this problem, the only thing you should do is to get a 16-Channel 12-Bit PWM/Servo Driver.
You can control 16 free-running PWM outputs with 16-Channel 12-Bit PWM/Servo Driver using only 2 pins. You can even chain up 62 breakouts to control up to 992 PWM outputs.
It’s an I2C-controlled PWM driver with a built-in clock. That means you do not need to continuously send it to signal to tie up your microcontroller, it is 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 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.Featured By RoboticsBD.
Product Images are shown for illustrative purposes only and may differ from the actual product.
The VCC pin is just power for the chip itself. If you want to connect servos or LEDs that use the V+ pins, you MUST connect the V+ pin as well. The V+ pin can be as high as 6V even if VCC is 3.3V (the chip is 5V safe). We suggest connecting power through the blue terminal block since it is polarity protected.
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Features :
- Adjustable frequency PWM up to about 1.6 KHz
- 12-bit resolution for each output – for servos, that means about 4us resolution at a 60Hz update rate
- Configurable push-pull or an open-drain output
- The output enable pin to quickly disable all the outputs
- Terminal block for power input
- Reverse polarity protection on the terminal block input
- Green power-good LED
- 3 pin connectors in groups of 4 so you can plug in 16 servos at once
- Chainable design
- A spot to place a big capacitor on the V+ line
- 220-ohm series resistors on all the output lines to protect them, and to make driving LEDs trivial.
- This board/chip uses I2C 7-bit address between 0x60-0x80, selectable with jumpers.
Documentation :
- Adafruit PCA9685 16-Channel Servo Driver
- PCA9685 16-channel, 12-bit PWM Fm+ I2C-bus LED controller
- Hooking it Up
- Chaining Drivers
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| General Specification |
| Driver IC | PCA9685 Compatible |
| Length (mm) | 62 |
| Width (mm) | 25 |
| Height (mm) | 15 |
| Weight (gm) | 10 |
| Shipment Weight | 0.015 kg |
| Shipment Dimensions | 8 × 4 × 3 cm |
Please allow 5% measuring deviation due to manual measurement.
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Package Includes :
1 x 16-Channel 12-bit PWM/Servo Driver.
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