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

Download DRV8811 data sheetAE-MDL-STPR1_ASSY400
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!

B

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:

AE-MDL-STPR1_TOP

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