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Green rectangular circuit board with 40-pin GPIO header, two black motor driver chips, blue terminal blocks, silver potentiometers

WaveShare

WaveShare HRB8825 Stepper Motor HAT computer accessory

SKU CH-YD6B-WR7RD

Add-on board with dual HR8825 drivers runs two stepper motors at up to 1/32 microstepping and 2.5 A per phase from an 8.2 V to 28 V supply

  • CPU TypeOther
  • Drives two stepper motors with dual HR8825 controllers
  • Six microstepping modes up to 1/32-step via DIP switches
  • Adjustable current up to 2.5A per motor with potentiometer
  • Built-in OCP, thermal shutdown and undervoltage lockout protection
  • Onboard 5V regulator powers Raspberry Pi through 40PIN header

Raspberry Pi Motor HAT

This WaveShare HRB8825 HAT adds dual stepper-motor control to Raspberry Pi series boards and Jetson Nano via the standard 40PIN GPIO header. It targets makers building 3D printers, sculpturing machines or mechanical arms who need precise motion from two motors on a single compact board.

Check voltage and pin clearance

Verify your project can supply a motor drive voltage between 8.2V and 28V and that the 3.3V logic level matches the host board. Ensure the 40PIN header on your Raspberry Pi or Jetson Nano is accessible and that the 65 x 56mm footprint with 3.0mm mounting holes fits inside your enclosure.

Integrates regulator and protection

The onboard 5V regulator can feed the host board, reducing the need for a separate supply. Built-in overcurrent protection, thermal shutdown and VM undervoltage lockout safeguard both the HR8825 drivers and connected motors. Six microstepping modes up to 1/32-step are selectable by DIP switch, and motor current is adjustable to a 2.5A maximum via potentiometer.

Highlights

  • Drives two stepper motors with dual HR8825 controllers
  • Six microstepping modes up to 1/32-step via DIP switches
  • Adjustable current up to 2.5A per motor with potentiometer
  • Built-in OCP, thermal shutdown and undervoltage lockout protection
  • Onboard 5V regulator powers Raspberry Pi through 40PIN header

Specifications

CPU TypeOther

Questions about this item

Does the HAT ship with stepper motors and a power supply, or must I source them separately?

The board only provides the dual HR8825 driver ICs, a 5 V regulator and motor connectors; stepper motors and an 8.2–28 V external supply are not included and must be purchased separately.

Should I choose the 1/32 microstepping setting or a coarser mode for my 3D printer axes?

Six DIP-switch selectable modes are available — full, half, 1/4, 1/8, 1/16 and 1/32 step — so you can match the resolution and torque requirements of each axis without changing hardware.

What does the 2.5 A current rating mean when the HAT is mounted on a Raspberry Pi in an enclosure?

Each HR8825 channel can deliver up to 2.5 A per phase; the potentiometer lets you set the exact current for your motors, while onboard OCP, TSD and UVLO protect the driver and the Pi’s 5 V rail.

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