AE-MDL-STPR1
2.5A Bipolar Stepper Driver with Indexer and Output Protection:

Download DRV8811 data sheet
Download MDL-STPR1 data sheet
Download MDL-STPR1 Schematic
Download GerberFiles for Bare Board

Some time ago controlling a stepper motor was for people with lots of motion control knowledge, enough time on their hand and a good power electronics back ground. Then came microstepping and only PhD students were allowed into the occult.

Today  you can cheat your way into the most amazing microstepping stepper driving, thanks to the internal indexer and dual H Bridge with current control housed on a single device, AKA TI’s DRV8811.

We decided to create a little home for the DRV8811 and devise this little 2” by 2” module, containing enough gimmicks to tackle a good deal of stepper control applications.

The MDL-STPR1 makes it easy to connect your power supply and stepper into its power connectors. Potentiometers allow for easy configuration of mixed decay mode percentage (DECAY) and VREF (for peak current configuration). Jumpers allow for setting non dynamic signals such as SLEEPn, USMx and SRn. This is perfect for that CNC application running through your PC computer parallel port.

For those wanting to interface the little module via any microcontroller (MSP430, AVR, 80C51, etc), a 10 pin header offers access to all necessary signals such as STEP, DIR, ENABLEn, SLEEPn, RESETn, HOME, USMx, etc.

It just can not get any easier!!!

Remember, that as always this is an open source design. Feel free to download Gerbers and fabricate the board at your convenience. Or hop into our eStore and buy the already fabricated board or fully functional and tested driver board. I am not trying to get rich, so these savings are passed unto you!

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Description Designator Footprint Qty Value Polarized Capacitor (Radial) C1 RB .2/.4 SS 1 100uF Capacitor C2, C3, C4, C5, C8, C12 0805 6 .1uF Capacitor C6, C7, C9 0805 3 .22uF Capacitor C10, C11 0805 2 1000 pf Schottky Diode D1, D2, D3, D4, D5, D6, D7, D8 SMC 8 MBRS360 (Optional) Header, 4-Pin J1 HDR1X4 1 Any .1" single line 4 pos Header, 2-Pin J2 PWR_CONN2 1 .197" Terminal Block Header, 10-Pin J3 HDR1X10 1 Any .1" single line 10 pos Three Pin Jumper JP1, JP2, JP3, JP4 JMP0.3 4 Any .1" single line 3 pos Resistor R1, R6 2512 2 .1 Potentiometer R2, R4 VR5 2 5K Resistor R3, R5 0805 2 47K Stepper Indexer U1 HTSSOP28 1 DRV8811PWP

ill of Materials:

Bare Board:

Do not forget to tune into www.superstepper.com for more information on the superstepper architecture.