The 8-Channel PWM or Servo FeatherWing adds 8 channels of 12-bit PWM output to any Adafruit Feather board via I2C. It uses an onboard PWM driver with a built-in clock, so it runs independently without tying up your microcontroller — unlike the TLC5940 family, no continuous signal is needed.

The FeatherWing is 5V-compliant, so you can drive up to 6V outputs from a 3.3V Feather — ideal for white or blue LEDs with higher forward voltages. With 6 address-select solder jumpers, you can stack up to 62 boards on a single I2C bus for a total of 992 PWM outputs.

Key Features

• 8× 12-Bit PWM Outputs – About 4 µs resolution at 60 Hz update rate for servos
• I2C Controlled – Free-running with built-in clock, no continuous signal required
• 5V Compliant – Drive up to 6V outputs from a 3.3V Feather
• Stackable – Up to 62 boards on one I2C bus (992 total outputs)
• Adjustable PWM Frequency – Up to approximately 1.6 kHz
• Push-Pull or Open-Drain – Configurable output mode
• 220 Ω Series Resistors – On all outputs for protection and easy LED driving
• Reverse Polarity Protection – On the terminal block power input
• Green Power-Good LED – Visual confirmation of power status

Ideal For

• Robotics projects (hexapod walkers, articulated arms)
• Multi-servo control
• Precise LED dimming and PWM control
• Kinetic art installations

Package Contents

• 1× 8-Channel PWM/Servo FeatherWing (fully assembled and tested)
• 2× 3×4 male straight headers (for servo/LED connections)
• 1× 2-pin terminal block (for power input)
• 1× 0.1″ header strip (for Feather connection)

Resources

• Adafruit Learn Tutorial – PWM/Servo FeatherWing (Arduino & CircuitPython)