16 Channel 12bit PWM Servo Driver I2C Interface PCA9685 for Arduino DIY Servo Shield Module
16Channel 12bit PWM Servo Driver I2C Interface PCA9685 for Arduino DIY Servo Shield Module. Buy online in Pakistan.
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16 Channel 12bit PWM Servo Driver I2C Interface PCA9685 for Arduino DIY Servo Shield Module
The PCA9685 is a 16-channel I2C-bus controlled LED controller optimized for Red/Green/Blue/Amber (RGBA) color backlighting applications. Each LED output has individual 12-bit resolution (4096 steps) PWM controller with a fixed frequency. The controller operates at a programmable frequency from a typical 24 Hz to 1526 Hz with a duty cycle that is adjustable from 0% to 100% so the LED can be set to output a specific brightness. All outputs are set to the same PWM frequency.
With the PCA9685 as the master chip, the 16-channel 12-bit PWM Servo Driver only needs 2 pins to control 16 servos, thus greatly reducing the occupant I/Os. Moreover, it can be connected to 62 driver boards at most in a cascade way, which means it will be able to control 992 servos in total.
Features:
- Contains an I2C-controlled PWM driver with a built-in clock. It means, unlike the TLC5940 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, which is good when you want to control white or blue LEDs with a 3.4V+ forward voltage.
- Supports 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 4 groups, so you can plug in 16 servos at one time (Servo plugs are slightly wider than 0.1″ so you can only stack 4 adjacent ones on 0.1″-hole female headers.
- 12-bit resolution for each output – for servos, that means about 4us resolution at an update rate of 60Hz.
- Size: 62 x 26 mm
Related Data:
- PCA9685 Datasheet
- GitHub Adafruit PWM/Servo Driver Library
- PWM/Servo Driver with Arduino Tutorial
- Adjustable frequency PWM up to about 1.6 KHz
- Configurable push-pull or open-drain output
- Output enable pin to quickly disable all the outputs
- 12-bit resolution for each output – for servos, that means about 4us resolution at 60Hz update rate
- 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