16-Channel PWM / Servo Driver I2C (PCA9685)

This breakout module uses the PCA9685 chip to control up to 16 servos via the I2C bus and occupies only 2 control lines on the Arduino. It is also suitable for other PWM applications, for example dimming LEDs: since each PWM output has a 220 ohm resistor, LEDs can be connected directly. For control, the Adafruit PWM Servo Driver Library is available in the Library Manager.

Recommended Accessories:

• 5V DC 4000mA plug-in power supply 5.5mm/2.1mm connector
• DC Socket Female Barrel Jack 5.5mm / 2.1mm with Screw Terminals
• Dupont Cable M-F 20cm 20 Pieces
• Waveshare Micro Servo 9G / SG90

Features:

• 16 PWM channels with 12-bit resolution
• 220 ohm resistor on each PWM output
• I2C address adjustable via 6 solder bridges A0 to A5, up to 62 boards
• No bridge: 0x40. Bridge A0: 0x41. Bridge A1: 0x42. Bridges A0 and A1: 0x43
• Separate servo power on V+
• According to the marking, the screw terminal is protected against reverse polarity, the side pins are not
• 1000 µF 10 V electrolytic capacitor on the module

Application Examples:

• Robots and robot arms with many servos
• Dimming LEDs
• Other applications with PWM modulation

Documentation:

• 16-channel servo driver tutorial (Adafruit)
• Adafruit PWM Servo Driver Library (GitHub)
• PCA9685 datasheet (PDF)

Technical Data:

• Chip: PCA9685
• Logic operating voltage: 3.3 to 5 V
• Servo supply V+: according to marking max. 6 V
• I2C default address: 0x40
• Channels: 16
• Resolution: 12 bit
• Maximum PWM frequency: 1.6 kHz, marking on the board: 40 to 1000 Hz
• Connections: GND, OE, SCL, SDA, VCC, V+
• Colour: blue
• Dimensions: 62.5 × 25 × 16.5 mm
• Weight: 10 g

Scope of Delivery:

• 1× 16-channel PWM servo driver I2C