Current Product Don't Have Test Firmware
Note: pls, use PC chrome/edge browser, if can't connect, refresh the webpage.
1. Click connect button
2. After connected successfully, pick a firmware
3. Click the burn button
4. After burning successfully, Unplug the device and restart.
StepMotor Driver is adapted to M5 core series, the
HR8825 chip solution provides a 3-way bipolar stepper motor control interface. You can implement independent control or multi-axis motor linkage after this module is stacked with M5 core series of the internal ESP32 generates signals directly to the driver chip.
This module integrated TCA9554 IO expansion chip provides
4 sets of input signal terminals +
3 sets of stepper motor subdivision control +
1 set of drive chip enable control, through the I2C interface control, can monitor and control the 8 expansion IO state, as well as for external limit switch, dynamic subdivision adjustment, motor braking. Integrated
PWR485 communication interface (
9-24V power input) and DC-JACK, which can be used for communication and more flexible power supply. Download the UIFLOW and you're ready to go!
With ESP32-GRBL firmware, web control. It can be easy to configure signal output and very useful when you need to position something very accurately. such as:printers, robotic arms, etc.
It is forbidden to plug or unplug the motor when it is powered on. All operations should be performed after the device is powered off to avoid damage to the module.
|Features||GRBL 13.2 MODULE||STEPMOTOR DRIVER|
|Control method||I2C communication||Pulse signal|
|Firmware program||Onboard STM32, built-in GRBL firmware||No firmware, can be driven by ESP32 direct signal|
|Number of modules that can be stacked||2||1|
|Subdivision adjustment||DIP switch||TCA9554 chip control|
|Interface||3 groups of limit switch interfaces||4 groups of custom signal input interfaces + RS485 communication interface|
|Stepper motor driver chip||HR8825|
|IO Expansion Chip||TCA9554|
|Support for segmentation||FULL、1/2、1/4、1/8、1/16、1/32|
|Maximum drive current per channel||1.5A|
|Input Signal Terminal Specifications||2.54-2P|
|Motor terminal specifications||2.54-4P|
|RS485 terminal specifications||3.96-4P|
|Product Dimensions||54.2 * 54.2 * 13.2mm|
|Packaging size||95 * 65 * 25mm|
I2C Addr: 0x27
0x00 when reading status
0x01 when writing status
Configure the corresponding bit in register
0x02 to 1 to achieve polarity inversion, and configure it to 0 to not reverse Turn to
The corresponding bit in the register
0x03 is configured as 1 for input mode, and 0 for output mode.
The pin relationship corresponding to the above register bytes is shown in the table below.
|7||P7 Subdivision adjustment bit M0||R/W|
|6||P6 Subdivision adjustment bit M1||R/W|
|5||P5 Subdivision adjustment bit M2||R/W|
|4||P4 DRV EN driver chip enable||R/W|
|3||P3 input signal 3||R/W|
|2||P2 input signal 2||R/W|
|1||P1 input signal 1||R/W|
|0||P0 input signal 0||R/W|
The stepping motor has different specifications, and the required drive current may also be different. The current output can be adjusted through the metal knob on the module during use. In order to prevent the motor from overheating or damage, adjust the knob slowly during adjustment, observe the motor status or connect an ammeter to determine the appropriate drive current.
|HR8825 X||STP X||/||/||DIR X||/||/|
|HR8825 Y||/||STP Y||/||/||DIR Y||/|
|HR8825 Z||/||/||STP Z||/||/||DIR Z|
ESP32-GRBL & WEB-UI The program requires the use of ESP32 board management
1.0.3 version, which is higher It may not compile normally. Please refer to
for instructions on use and WEB-UI control