Adafruit 16-Channel 12-bit PWM/Servo Shield - I2C interface

This shield is a fantastic add-on for controlling up to 16 PWM outputs with just two I2C pins. With the ability to stack up to 62 shields, you can control an impressive total of 992 PWM outputs—imagine the possibilities! Since I2C is a shared bus, you can connect other I2C devices and sensors as long as their addresses don't conflict (this shield uses address 0x40).

The shield features an I2C-controlled PWM driver with a built-in clock, meaning it runs independently without tying up your microcontroller. It is 5V compliant, so you can use a 3.3V Arduino while still safely driving outputs up to 6V. This is especially useful for controlling white or blue LEDs with higher forward voltages.

Key features:

• I2C control for 16 PWM outputs, expandable to 992 outputs by stacking up to 62 shields.
• Adjustable PWM frequency up to about 1.6 KHz.
• 12-bit resolution for precise control, providing about 4us resolution for servos at a 60Hz update rate.
• Configurable output modes: choose between push-pull or open-drain output.
• Address selection with 6 pins, allowing multiple shields to be stacked.
• Power input via terminal block with reverse polarity protection, and green/red power-good LEDs for status.
• Solder jumpers for address select pins and a spot to add a large capacitor for V+ if needed.
• 220-ohm series resistors on output lines for LED protection and ease of use.
• Prototyping area (5x20) for additional wiring and customizations.

Additional features:

• 3-pin connectors in groups of 4 for connecting up to 16 servos at once.
• Stackable design: Use stacking headers and right-angle 3x4 headers to stack shields without obstructing servo connections.
• The shield comes fully assembled and tested, with all necessary headers and components for easy setup. Some light soldering is required to attach the desired headers, which is an easy task for even beginners.

Included:

• Assembled shield with terminal block, header pins, and prototyping area.
• 4 pieces of 3x4 male straight header for servos/LEDs and a 2-pin terminal block for power.
• 0.1" header to plug into an Arduino.

Note: Servos and Arduino are not included, but we offer a wide variety of servos in our shop. Right-angle headers are available separately.