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.
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.
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
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