What can be controlled by PCA9685?

It can control the output of the 16-channel PWM values. We can manage the PWM frequency and duty cycle to control the servo precisely by programming the controller. The turn-on time of each LED driver output and the duty cycle of PWM can be controlled independently using the LEDn_ON and LEDn_OFF registers.

How do I use PCA9685?

Interfacing PCA9685 with Arduino:

  1. First connect VCC of the PCA9685 Servo Driver module to the 5V of the Arduino.
  2. Next connect SDA to A4 if you are using Arduino Mega connect to pin 20 instead.
  3. Connect the SCL pin to A5 of the arduino if you are using an Arduino mega once again connect this to pin 21 instead.

How do I connect my servo controller?

Following are the steps to connect a servo motor to the Arduino:

  1. The servo motor has a female connector with three pins.
  2. Connect the power cable that in all standards should be red to 5V on the Arduino.
  3. Connect the remaining line on the servo connector to a digital pin on the Arduino.

How many servos can a Raspberry Pi control?

16 servos
Each board can control up to 16 servos and up to 62 boards can be chained together for a maximum of 996 servos. The board gives glitch-free, 12-bit resolution control of each servo using the Pi4’s I2C bus, leaving other GPIO pins free to use.

How many stepper motors can a Raspberry Pi control?

This Raspberry Pi add-on is perfect for any motion project as it can drive up to 4 DC or 2 Stepper motors with full PWM speed control. Since the Raspberry Pi does not have a lot of PWM pins, we use a fully-dedicated PWM driver chip onboard to both control motor direction and speed.

How many motors can you connect to Arduino?

The Arduino has 13 dedicated digital pins and 6 other analog ones which can double up as digital write pins. So you can use, at maximum, 3 motor shields. If you do not need PWM control of motors you would use only 4 pins(enable pin always high) per motor shield and can connect up to 4 motor shields.