StepMotor Driver
Description
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 (RS485 + 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.
Note:
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.
Product Features
- Three-axis HR8825 stepper motor driver
- Suitable for bipolar stepper motors
- With current regulating potentiometer per circuit, drive current up to 1.5A
- Support various subdivision modes, up to
1/32STEP subdivision - Multiple signal input interfaces
- PWR485 communication interface (RS485 + 9-24V power input)
- DC-JACK terminal input (9-24V)
- Built-in DCDC, integrated 9-24V to 5V circuit
- Development platform.
- Arduino, UIFlow
Included
- 1x StepMotor Driver
- 4x 2.54-2P terminals
- 3x 2.54-4P terminals
- 1x 3.96-4P terminals
Applications
- Printers
- Scanners
- CNC engraving machine control
- Motion Module Control
Similar products comparison
| 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 |
| Driver IC | DRV8825 | HR8825 |
| Subdivision adjustment | DIP switch | TCA9554 chip control |
| Interface | 3 groups of limit switch interfaces | 4 groups of custom signal input interfaces + RS485 communication interface |
Specifications
| Specifications | parameters |
|---|---|
| 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 |
| Net weight | 40g |
| Gross weight | 60g |
| Product Dimensions | 54.2 * 54.2 * 13.2mm |
| Packaging size | 95 * 65 * 25mm |
Microstep 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 |
TCA9554寄存器
I2C Addr: 0x27
Use register 0x00 when reading status
Use register 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.
| Bit | Desc | R/W |
|---|---|---|
| 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 |
Related Links
Pin Mapping
- HR8825
| CORE | G16 | G12 | G15 | G17 | G13 | G0 |
|---|---|---|---|---|---|---|
| HR8825 X | STP X | / | / | DIR X | / | / |
| HR8825 Y | / | STP Y | / | / | DIR Y | / |
| HR8825 Z | / | / | STP Z | / | / | DIR Z |
- RS485
| CORE | G34 | G26 | GND |
|---|---|---|---|
| RS485 | TX | RX | GND |
- TCA9554
| CORE | G21 | G22 | 5V | GND |
|---|---|---|---|---|
| TCA9554 | SDA | SCL | VIN | GND |
Schematics
Example
Note:
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
ESP32-GRBL-WIKI
for instructions on use and WEB-UI control