The Schmalz Haus Big Easy Driver v1.2 User Manual provides wiring, jumper settings, current limit adjustment, and specifications for the stepper driver board.
This manual describes the Big Easy Driver (BED) stepper driver board, its connections, and configuration options. It explains how to hook up power, motor wires, and control signals, and details the jumper settings for alternate power and logic voltage selection.
The document also covers current‑limit adjustment via the CUR_ADJ potentiometer, the meaning of the Power LED, heat‑dissipation recommendations, and the supported step modes and voltage ranges. A brief schematic and licensing information are included at the end.
| Maximum current per phase | 2 A |
|---|---|
| Supported step modes | Full, Half, Quarter, 1/8, 1/16 |
| Logic input voltage | 3.3 V or 5 V (jumper selectable) |
| Power supply voltage range | +8 V to +30 V DC |
Use the MS1, MS2, and MS3 pins according to the table in the manual.
Turn the CUR_ADJ potentiometer and measure the voltage on test point TP1; the silk‑screen arrow shows the direction of increase.