(free shipping for air parcel)3D printer MKS DRV8825 stepper motor driver 4 PCB layer optimized version of a cooling fin

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Description

Product Name: MKS DRV8825 stepper motor driver board Reprap 3D StepStick Arduino compatible printer
Optimization of instructions:
1, the driving current algorithm: I = VREF x 2, the potentiometer has three pins, the voltage with a multimeter for the 8825 pin test direction is Vref, adjustable current through a potentiometer clockwise, counterclockwise twist is the increase of current, is to reduce the current. Refer to the diagram:

    2, 8825 common design problems in Wiki, the default Vref is about 1.6V, so the current 3.2A has not adjusted, will be very hot very easy to burn!
3, MKS 8825, after the design optimization, the default Vref is about 0.65v, the default current is 1.3A, the maximum current of about 2.5, use more safety.
4, if you use, suggest to buy MKS 8825.
Shipping list:
1, the DRV8825 module (pin is welded)
2, a cooling fin with silica
The relative advantages of 4988:
1, the maximum current 2.5A.
2, supports up to 32 segments.
3, 4 layers of PCB boards, 2Oz copper thickness, better heat dissipation performance.
4, smaller chip resistance, lower heat, better heat dissipation.
Special remind:
Note installation direction, otherwise it may burn the driver, please refer to the following:
In 1, the use of ramp1.4:

1, pay attention to the driving direction; 2, note 4 to insert the jumper cap

Parameter:
Size: 1.5mmX2mm (and 4988)
Can drive current: 2.5A
1, 1/2, subdivision: 1/4, 1/8, 1/16, 1/32
Manufacturing process: SMT machine manufacturing, non manual welding, the yield is higher, more stable performance
Suitable for object:
Need to drive the stepper motor.
Is to build a 3D printer, CNC, engraving machine and other essential module.
Support Prusa Mendel 3D printer, ultimaker, printbot, makerbot etc..
You can refer to the back of the Arduino code, direct drive motor
Technical support and guarantee:
The Wiki product line and official!
Do the power test before delivery, which can be used to ship.
DRV8825 has the following characteristics:
1, suitable for driving 8.2V~45V 2.5A stepper motor;
2, only a simple step and direction control interface;
3, six different step mode: full, half, 1/4, 1/8, 1/16, 1/32;
4, adjustable potentiometer can be adjusted to the maximum current output, resulting in higher step rate;
5, automatic detection / current decay mode selection;
6, overheating closed circuit, undervoltage lockout, crossover current protection;
7, short circuit protection and load short-circuit protection

  产品介绍参考： Overview

This product is a carrier board or breakout board for TI’s DRV8825 stepper motor driver; we therefore recommend careful reading of the DRV8825 datasheet (1MB pdf) before using this product. This stepper motor driver lets you control one bipolar stepper motor at up to 2.2 A output current per coil (see the Power Dissipation Considerations section below for more information). Here are some of the driver’s key features:
Simple step and direction control interface
Six different 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 potentiometer, which lets you use voltages above your stepper motor’s rated voltage to achieve higher step rates
Intelligent chopping control that automatically selects the correct current decay mode (fast decay or slow decay)
45 V maximum supply voltage
Built-in regulator (no external logic voltage supply needed)
Can interface directly with 3.3 V and 5 V systems
Over-temperature thermal shutdown, over-current shutdown, and under-voltage lockout
Short-to-ground and shorted-load protection
4-layer, 2 oz copper PCB for improved heat dissipation
Exposed solderable ground pad below the driver IC on the bottom of the PCB
Module size, pinout, and interface match those of our A4988 stepper motor driver carriers in most respects (see the bottom of this page for more information)
We also carry a DRV8824 stepper motor driver carrier that can serve as a direct substitute for the DRV8825 carrier when using lower-current stepper motors. The DRV8824 can only deliver up to 0.75 A per coil without a heat sink (1.2 A max with proper cooling), but it has larger current-sense resistors that allow for better microstepping performance than the DRV8825 carrier at low currents. The only way to tell our DRV8824 carrier apart from the DRV8825 carrier is by the markings on the driver IC; if you have a mix of the two, you might consider marking them (there is a blank square on the bottom silkscreen you can use for this). For lower-voltage applications, consider our pin-compatible DRV8834 carrier, which works with motor supply voltages as low as 2.5 V.
This product ships with all surface-mount components—including the DRV8825 driver IC—installed as shown in the product picture.

Additional information

Weight 0.02 kg

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