HRB8825 Stepper Motor HAT For Raspberry Pi

Features

• Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards, Jetson Nano
• Onboard dual HR8825 motor controller IC with built-in microstepping indexer, drives two stepper motors, easy to use
• 6 available microstepping modes, configured with the DIP switches: full-step, half-step, 1/4-step, 1/8-step, 1/16-step, and 1/32-step
• Adjustable motor drive current via potentiometer, maximum 2.5A current output
• Protection features: Overcurrent Protection (OCP), Thermal Shutdown (TSD), VM Undervoltage Lockout (UVLO)
• Integrates 5V regulator, allows providing power to Raspberry Pi
• Onboard multi connector options for stepper motors in different specifications
• Comes with development resources and manual (examples in BCM2835, wiringPi, and python)

Specifications Motor controller HR8825 Motor drive voltage 8.2V~28V Motor drive current 2.5A Logic voltage 3.3V Mounting hole size 3.0mm Dimension 65 × 56mm 6 available microstepping modes

Configured via the DIP switches:
full-step, half-step, 1/4-step, 1/8-step, 1/16-step, and 1/32-step

MODE2 MODE1 MODE0 Motor Microstepping Setting 0 0 0 full-step 0 0 1 half-step 0 1 0 1/4-step 0 1 1 1/8-step 1 0 0 1/16-step 1 0 1 1/32-step 1 1 0 1/32-step 1 1 1 1/32-step Onboard Different Stepper Motor Interfaces

Easy access to stepper motors in different specifications

Pin Motor Interface Description VIN 8.2~28V Power Input 5V 5V Power GND Ground A1 Output 1 terminal of bipolar stepper motor M1 winding A A2 Output 2 terminal of bipolar stepper motor M1 winding A B1 Output 1 erminal of bipolar stepper motor M1 winding B B2 Output 2 terminal of bipolar stepper motor M1 winding B A3 Output 1 terminal of bipolar stepper motor M2 winding A A4 Output 2 terminal of bipolar stepper motor M2 winding A B3 Output 1 terminal of bipolar stepper motor M2 winding B B4 Output 2 terminal of bipolar stepper motor M2 winding B

1. Raspberry Pi GPIO interface
Can be connected to various Raspberry Pi HATs

2. Motor interface
Three different specifications of the motor interface, easy to use

3. MP1482 power chip
External power supply can be converted into 5V voltage to power the Raspberry Pi

4. HR8825 motor driver chip
Can drive two stepper motors

5. External power supply interface
8.2V ~ 28V DC power input

6. Motor power switch
You can choose whether the module supplies power to the Raspberry Pi

7. DIP switch
For setting 6 different step resolutions

8. Potentiometer
Adjustable motor drive current

Dimensions

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