Inland 3D Printer DRV8825 Kit (5PCS) Introduction:This stepper motor driver is powered by DRV8825. This driver has a same pin and interface as our A4988 stepper motor driver, so it can replace the A4988 driver. It is a high-powered stepper motor driver. DRV8825 has adjustable current limits, over-current and over-heat protection, six micro resolution (down 1/32-step).It uses 8.2-45V and can provide up to approximately 1.5 per phase without heat sink or forced air flow (rated up to 2.2 with adequate additional cooling per coil) Specifications:1. With only simple step and direction control interface;2. Six different step modes: full, half, 1/4, 1/8, 1/16, and 1/32;3.Adjustable potentiometer can adjust the maximum current output, resulting in a higher step rate;4. Automatic current decay mode detection / selection;5. Overheat shutdown circuit, under voltage lockout, cross current protection;6. Ground short circuit protection and load short circuit protection. Settings for working mode: Connection Diagram Sample Codeint dirPin = 7; int stepperPin = 8; void setup() { pinMode(dirPin, OUTPUT); pinMode(stepperPin, OUTPUT); } void step(boolean dir,int steps){ digitalWrite(dirPin,dir); delay(50); for(int i=0;i<steps;i++){ digitalWrite(stepperPin, HIGH); delayMicroseconds(800); digitalWrite(stepperPin, LOW); delayMicroseconds(800); } } void loop(){ step(true,1600); delay(500); step(false,1600*5); delay(500); } Test ResultThe selection end MS1, MS2, MS3 of three modes are all connected to GND, that is, full-step mode, and the motor needs 200 stepping values or a stepping 1.8° to turn a round.In the experiment, we first let the stepper motor reverse 8 circles and delay 0.5 seconds; then turn 40 circles and delay 0.5 seconds. If it is an half-step mode, then the number of both positive and reverse circle should be halved.Package IncludedInland 3D Printer DRV8825 *5PCS
