Step dir controller 3x2
janelia-kicad·step_dir_controller_3x2
About the Step dir controller 3x2 PCB
Step dir controller 3x2 is an open source PCB design by janelia-kicad, published on GitHub under the Custom license license. It is a 2-layer board measuring 69.9 × 40.6 mm, with 23 components from 8 distinct parts.
Other key parts include the TMC429, 26LS31 and MAX6817. By type, the board carries 8 capacitors, 7 ICs, 3 connectors and 3 transformers.
From the project
This device outputs three independent sets of differential step and direction signals to control motion of actuators using step and direction drivers.
- Repository Information - Description - Images - Schematic - Gerbers - Bill of Materials - PCB Parts - Supplemental Parts - Vendor Parts Lists - Supplemental Documentation - Assembly Instructions
- Name: step\dir\controller\3x2 - Version: 1.0 - License: Open-Source Hardware - URL: - Author: Peter Polidoro - Email:** peter@polidoro.io
This device outputs three independent sets of differential step and direction signals to control motion of actuators using step and direction drivers.

Main components on the Step dir controller 3x2
Step dir controller 3x2 bill of materials (BOM)
23 components, 8 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TMC429 | QFN-5x5-32 | U1 |
| 3 | 26LS31 | SOIC_16_0.154IN | U2, U4, U6 |
| 3 | MAX6817 | MAX6817 | U3, U5, U7 |
| 3 | HEADER_02X05_SMD | HEADER_02x05_SMD | P1, P2, P3 |
| 1 | CLK_32MHZ | CTS_SMD_4_7X5MM | CLK1 |
| 1 | MODULAR_DEVICE_BASE_3X2_MALE | MODULAR_DEVICE_BASE_3X2_MALE | MDB1 |
| 3 | TERM_BLK_HDR_4POS_VERT_0.138IN | TERM_BLK_HDR_4POS_VERT_0.138IN | T1, T2, T3 |
| 8 | 0.1uF | SM1210 | C1, C2, C3, C4, C5, C6, C7, C8 |
Step dir controller 3x2 design files
The KiCad project lives in the janelia-kicad/step_dir_controller_3x2 repository on GitHub; these links point at the commit this page was built from.
Step dir controller 3x2: common questions
How big is the Step dir controller 3x2 PCB?
The Step dir controller 3x2 measures 69.9 × 40.6 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Step dir controller 3x2?
23 components, from 8 distinct parts. The full bill of materials is listed on this page.
Where can I download the Step dir controller 3x2 design files?
From the janelia-kicad/step_dir_controller_3x2 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Step dir controller 3x2 design in my own project?
It is published under Custom license, which limits how it may be reused; read the license before building on it.