Module13.2 Stepmotor Driver v1.1 is a stepper-motor driver designed for M5 controllers, adopting an STM32 + HR8825 solution and providing three bipolar stepper-motor control ports. After stacking with an M5 controller, the on-board ESP32 directly generates signals for the driver IC, allowing either independent axis control or multi-axis linkage. An integrated STM32F030F4P6 acts as an IO expander, offering four input signal terminals and one driver-enable control, enabling I2C communication to control and monitor the driver’s reset and status, suitable for external limit switches and motor brake functions. Three solder pads on the module set the micro-stepping modes for the three motors. A built-in PWR485 communication port (RS485 + 9-24 V power input) and a DC-JACK provide flexible power options while communicating. UIFlow graphical programming is supported for easy signal configuration and precise stepper-motor control. The module fits various motion-control scenarios such as printers and robotic arms.
Note
Notice:
Do not hot-swap the motor while powered. Always power off the device before any operation to avoid damaging the module.
#>Power Supply:
Features
STM32F030F4P6@: ARM® 32-bit Cortex™-M0 CPU
Triple-axis HR8825 stepper-motor drivers
Suitable for bipolar stepper motors
Adjustable potentiometer per channel, drive current up to 1.5 A
Multiple micro-stepping modes, up to 1/32 STEP
Four signal-input interfaces
PWR485 communication port (RS485 + 9-24 V power input)
DC-JACK input (9-24 V)
Development Platform: Arduino, UIFlow
Includes
1 x Module13.2 Stepmotor Driver v1.1
4 x 2.54-2P Terminal
3 x 2.54-4P Terminal
1 x 3.96-4P Terminal
Applications
Printers
Scanners
CNC engraver control
Motion-module control
Specifications
Specification
Parameter
IO Expander
STM32F030F4P6
Stepper-motor Driver IC
HR8825
Supported Micro-step Modes
FULL, 1/2, 1/4, 1/8, 1/16, 1/32
Max Drive Current / Channel
1.5 A
Input-signal Terminal
2.54-2P
Motor Power Supply
DC 9-24 V (5.5/2.1 mm DC jack) Voltage range: DC 9-24 V Interface type: 5.5/2.1 mm DC jack Polarity: center +
Motor Terminal Specification
2.54-4P
RS485 Terminal Specification
3.96-4P (9-12 V)
Operating Temperature
0-40 °C
Product Size
54.2 x 54.2 x 13.2mm
Package Size
95 x 65 x 25mm
Product Weight
40g
Gross Weight
60g
Learn
Subdivision/Micro-step Truth Table
M2
M1
M0
Resolution
0
0
0
FULL
0
0
1
1/2
0
1
0
1/4
0
1
1
1/8
1
0
0
1/16
1
0
1
1/32
1
1
0
1/32
1
1
1
1/32
Set the desired micro-step mode by soldering the corresponding pad to logic 1.\
Drive Current Adjustment
Different stepper motors require different drive currents. You can adjust the output current with the metal trimmer on the module. To avoid overheating or damaging the motor, turn the trimmer slowly and observe motor behavior or use an ammeter to determine the proper current.\
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