PCA9685, 16-channel servo driver, 12-bit PWM I2C, Adafruit 815

16-channel PWM generator useful when microcontroller outputs are missing. It allows, among other things, to control servos, regulate the speed of motors or change the brightness of LEDs. It communicates via I2C, operates with voltages of 3.3 V and 5 V.

Main features:

• The voltage of the logical part: 3.3 V to 5 V
• Servo motor supply voltage: up to 6 V
• All outputs are described on the board
• Built-in clock resonator, thanks to which the microcontroller signal does not have to be continuously sent to the system
• Possibility to select I2C bus address (0x60-0x80) via jumpers, which allows connecting 62 devices
• The PWM signal resolution is 12 bits, the frequency can be adjusted between 40 Hz and 1000 Hz
• It has push-pull or open-drain digital outputs
• Equipped with protection against an inverse connection of power supply voltage
• There are holes on the board to solder a large capacitor in case of interference due to too much current being drawn by the servo
• It has 220 Ω resistors connected in series in the output circuits, thanks to which you can directly control LEDs
• The set includes connectors for self-assembly:
• 1x screw - to connect the power supply voltage
• 4x 3x4 goldpin strips, 2.54 mm raster for connecting servos
• 1x 1x6 goldpin strip for connecting logical signals using wires
• Module dimensions are 62.5 x 25.4 x 3 mm
• No joints: 5,5 g
  

Useful links:
Manufacturer website

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