Product Name: DRV8825 stepper motor driver board Reprap 3D StepStick Arduino compatible printer
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. Because of the design of Wiki, the default Vref may have more than 1.25V, so in the use of prior adjustment of Vref to 1.25v!!!
2, for their own use, suggest to buy MKS 8825
3, the measurement of the reference voltage, the reference:
2, note installation direction, otherwise it may burn the drive,
1, the DRV8825 module (pin is welded)
2, a cooling fin with silica, no longer use anti-static bag, in particular to remind!
The relative advantages of 4988:
1, the maximum current 2.5A.
2, supports up to 32 segments.
3, the 4 PCB layer, better heat dissipation performance.
4, smaller chip resistance, lower heat, better heat dissipation.
Please refer to the following:
1、the use of ramp1.4:
1, Megatron heaven, pay attention to the driving direction; 2, note 4 to insert the jumper cap
Size: 1.5mmX2mm (and 4988)
Can drive current: 2.5A
Subdivision: 1, 1/2, 1/4, 1/8, 1/16, 1/32
Manufacturing process: SMT machine manufacturing, non manual welding, the yield is higher, more stable performance
MS1 (MODE0), MS2 (MODE1), MS2 (MODE2), jumper plug for High, remove the jumper cap for Low.
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.
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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