Description
The Waveshare Stepper Motor HAT type B for Raspberry Pi - powered by dual HRB8825 motor controller IC - allows operating up to two stepper motors simultaneously with a maximal motor drive current of 2.5A und provides microstepping via DIP swtiches.
This board also provides several protection features as well as an 5V regulatur to power your Raspberry Pi via GPIO connection and three different motor interfaces. Comes with development resources and manual (examples in BCM2835, wiringPi, and python). Check the documentation page of this product for further information and assistance.
Specifications
- Micro controller: Dual HRB8825 IC
- Motor drive voltage: 8.2 ~ 28V
- Motor drive current: max. 2.5A (adjustable via onboard potentiometer for each motor)
- Logic voltage: 3.3V
- Supported boards (requires 40Pin GPIO):
- Raspberry Pi
- Jetson Nano
- Supports Microstepping modes (up to 1/32 step)
- Protection features:
- Overcurrent Protection (OCP)
- Thermal Shutdown (TSD)
- VM Undervoltage Lockout (UVLO)
- Mounting hole size: 3.0mm
- Dimension: 65 × 56mm
Microstepping mode configuration
| 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 Motor interface
| 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 |
Board layout
-
Raspberry Pi GPIO interface
Can be connected to various Raspberry Pi HATs -
Motor interface
Three different specifications of the motor interface, easy to use -
MP1482 power chip
External power supply can be converted into 5V voltage to power the Raspberry Pi -
HR8825 motor driver chip
Can drive two stepper motors -
External power supply interface
8.2V ~ 28V DC power input -
Motor power switch
You can choose whether the module supplies power to the Raspberry Pi -
DIP switch
For setting 6 different step resolutions -
Potentiometer
Adjustable motor drive current
Documentation
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