ماژول درایور استپر موتور DRV8825 ویژه پرینتر سه بعدی

Description:
The step stick DRV8825 is a breakout board for the Texas Instruments DRV8825 stepper motor controller. You can use this board to act as an interface between your microcontroller and the stepper motor.
The DRV8825 is able to deliver up to 2.5A and can be controlled with a simple step/direction interface. The controller has a resolution of min. 1/32 step and protective features for over-current, short circuit, and over-temperature.
A low-power sleep Built-in 3.3-V Reference Output mode is provided which shuts down internal circuitry to achieve a very low quiescent current draw.
This Small Package and Footprint sleep mode can be set using a dedicated nSLEEP Protection Features pin.
Overcurrent Protection (OCP) Internal shutdown functions are provided for Thermal Shutdown (TSD) overcurrent, short circuit, under-voltage lockout and VM Undervoltage Lockout (UVLO) over temperature. Fault conditions are indicated via
the nFAULT pin.

Safety warning:
Always disconnect the power source from the board before unplugging the stepper motor and/or adjusting the current.
Failure to do so may result in permanent damage to the board and/or injuries due to high voltage spikes.
The stepper driver may get HOT, do not touch the device until it had a few minutes to cool down after operation.
It is recommended to drive the stepper motor on current as low as possible to reduce power consumption and increase lifespan.
It is NOT recommended to turn the stepper motor while connected to the electronics. While turning the stepper motor, large voltages may be emitted through the VMOT pin, which can damage the electronics.

Features:
Controller: DRV8825
Max Operating Voltage: 45V
Max Current: 2.5A
Dimensions: 20.4x15mm

Specification:
2.2A current handling capability
Small footprint
Easy step and direction control interface
Step resolutions: full-step, half-step, 1/4-step, 1/8-step, 1/16-step, and 1/32-step
Adjustable current control lets you set the maximum current output with a built-in potentiometer (It allows you to use voltages above your stepper motor’s rated voltage to achieve higher step rates)
Adjustable current decay modes
Built-in regulator (no external logic voltage supply is needed)
Interface directly with 3.3 V and 5 V systems
Over-temperature shutdown, over-current shutdown and under-voltage lockout with FAULT pin output.
Short to the ground and shorted load protection
Exposed solderable ground pad below the driver IC on the bottom of the PCB (can be used to enhance the cooling if desired)