LOT / 4 DRV8825 Stepper Motor Driver Modules 3D Printer RAMPS WITH HEAT SINKS

Cobblebot Special! LOT OF 4 DRV8825 Stepper Motor Drivers RepRap 3D Printer RAMPS CNC StepStick Modules With Heat Sinks MANY OF THE COBBLEBOT BACKERS FAILED TO RECEIVE THIS PROMISED STRETCH GOAL UPGRADE. I AM OFFERING MY FELLOW COBBLEBOT BACKERS THE 4 DRV8825 STEPPER DRIVER MODULES FOR YOUR CONVENIENCE AT A LOW PRICE, SO YOU DON'T HAVE TO WAIT FOR THESE TO GET STARTED ON YOUR BUILD. (Not limited to Cobblebot owners, anyone may purchase.) The DRV8825 stepper motor driver carrier is a breakout board for TI's DRV8825 microstepping bipolar stepper motor driver. The module has a pinout and interface that are nearly identical to those of the A4988 stepper motor driver board, so it can be used as a higher-performance drop-in replacement for those boards in many applications. The DRV8825 features adjustable current limiting, overcurrent and overtemperature protection, and six microstep resolutions (down to 1/32-step). It operates from 8.2 – 45 V and can deliver up to approximately 1.5 A per phase without a heat sink or forced air flow (rated for up to 2.2 A per coil with sufficient additional cooling). DRV8825 Technical Specs: Simple step and direction control interfaceSix different step resolutions: full-step, half-step, 1/4-step, 1/8-step, 1/16-step, and 1/32-stepAdjustable 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 rates45 V maximum supply voltageBuilt-in regulator (no external logic voltage supply needed)Can interface directly with 3.3 V and 5 V systemsOver-temperature thermal shutdown, over-current shutdown, and under-voltage lockoutShort-to-ground and shorted-load protection4-layer, 2 oz copper PCB for improved heat dissipationExposed solderable ground pad below the driver IC on the bottom of the PCBModule size, pinout, and interface match those of the A4988 stepper motor driver carriers in most respects Package contents: 4 x DRV8825 Stepper drivers4 x Heat Sinks