Product description: HRB8825 28V / 2.5A dual-channel stepper motor driver - HAT overlay for Raspberry Pi - Waveshare 22311
A two-channel driver for stepper motors from Waveshare , in the form of a HAT overlay for Raspberry P i. The driver is based on two HR8825 systems, works with a voltage from 8.2 V to 28 V and a current intensity up to 2.5 A. The module works in 6 microstep modes: full step, half step, 1/4 step, 1/8 step, 1/16 step, 1/32 step. It is equipped with overcurrent protection (OCP), shutdown after exceeding a given temperature (TSD), VM undervoltage blockade (UVLO).
Shield compatible with Raspberry Pi and Nvidia Jetson Nano. The subject of the sale is the stepper motor driver cover itself, the remaining elements can be purchased separately.The main features of the stepper motor driver overlay
- Standard 40-pin pin, compatible with the Raspberry Pi and Jetson Nano series boards
- Two HR8825 motor drivers with built-in microstep indexer
- 6 available microstep modes, configurable via DIP switch: full step, half step, 1/4 step, 1/8 step, 1/16 step and 1/32 step
- Motor current adjustable with potentiometers, maximum 2.5 A
- Protections: overcurrent (OCP), thermal shutdown (TSD), VM undervoltage blocking (UVLO)
- Integrated 5V regulator provides power to the Raspberry Pi
- Built-in multi-connector options for stepper motors of different specifications
- The manufacturer has prepared programming resources and instructions
The arrangement of elements on the board
- Raspberry Pi GPIO interface
- Motors interface - three different connection interfaces
- MP1482 Power System - The external power supply can be adjusted to 5V to power the Raspberry Pi
- HR8825 motor driver system - allows you to control two stepper motors
- Power interface from 8.2V to 28V
- Motors power switch
- DIP switch - to select the microstepping mode
- Potentiometer - motor current adjustment
The distribution of elements on the board.DIP switch settings
S0 / S1 / S2 - MODE0 / MODE1 / MODE2 - M1 motor
S3 / S4 / S5 - MODE0 / MODE1 / MODE2 - M2
| MODE2 | MODE1 | MODE0 | Microstep setting |
|---|---|---|---|
| 0 | 0 | 0 | full step |
| 0 | 0 | 1 | half a 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 |
Dual-channel driver for stepper motors HRB8825 28 V / 2.5 A - HAT overlay for Raspberry Pi - Waveshare 22311.
Stepper motor driver specification
- Chip: 2x HR8825
- Supply voltage: 8.2 V to 28 V
- Amperage for motors: 2.5 A
- Logic voltage: 3.3V
- Mounting holes size: 3 mm
- Dimensions: 65 x 56 mm
