2 layers43.9 × 27.7 mm
2 layers56 × 56 mm
Motor
jgrage/stepper-board- Size
- 56 × 56 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 19
- Nets
- 35
- Pads
- 80
- Tracks, vias
- 89, 1
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 25 Apr 2022
- Updated
- 3 Nov 2023
Overview
Motor is an open-source printed circuit board by jgrage, from the jgrage/stepper-board repository on GitHub, published under the MIT licence. It is a 2-layer board of 56 × 56 mm with 19 parts on 35 nets, routed with 89 tracks and 1 via.
Its parts include 6 resistors, 3 connectors, 1 capacitor and 1 diode. It belongs with the robots and motor control boards and the AVR (ATmega, ATtiny) boards of this library.
README
README.mdstepper-board
Stepper motor controller board with NEMA-23 dimensions. This board was designed with KiCad. All manufacturing files are prepared for production at JLCPCB. The surface mount components are placed on the top layer. All through-hole connectors are placed on the bottom layer.
Driver
The board features a socket for a Pololu A4988 breakout board. This chip can drive stepper motors with up to 2A per coil. Make sure to connect an appropriate power supply to the barrel jack.
Controller
The firmware resides in an Arduino Nano that will plug into the 30-pin socket. Make sure to use a board with FT232RL chip so your controller will have a unique USB ID. The cheaper CH340 chips that are used on many clones all share the same ID. The controller receives serial commands and its 5V power via the Mini USB connector.
Limit switches
The firmware currently supports two mechanical limit switches in a normally closed configuration. Connect these to the two leftmost/rightmost pins of the 6-pin connector. The two middle pins are reserved for a mechanical reference switch, but this feature is not yet implemented in the firmware.
Top layer
Bottom layer
Assembled
Parts
19| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 100k | Resistor_SMD:R_0402_1005Metric | R1, R2, R3 |
| 3 | 1k | Resistor_SMD:R_0603_1608Metric | R5, R6, R7 |
| 3 | MountingHole | MountingHole:MountingHole_5mm | H1, H2, H3 |
| 2 | ToolingHole | JLCPCB:Tooling_Hole_JLCPCB | H4, H5 |
| 1 | 22u | Capacitor_SMD:C_1206_3216Metric | C1 |
| 1 | Arduino_Nano_v3.x | Module:Arduino_Nano | A1 |
| 1 | Barrel_Jack_Switch | Connector_BarrelJack:BarrelJack_Wuerth_6941xx301002 | J3 |
| 1 | Conn_01x04_Female | Connector_Phoenix_MSTB:PhoenixContact_MSTBA_2,5_4-G-5,08_1x04_P5.08mm_Horizontal | J1 |
| 1 | Conn_01x06_Female | Connector_Phoenix_MC:PhoenixContact_MC_1,5_6-G-3.5_1x06_P3.50mm_Horizontal | J2 |
| 1 | D_TVS | Diode_SMD:D_SMB | D1 |
| 1 | Pololu_Breakout_A4988 | Module:Pololu_Breakout-16_15.2x20.3mm | A2 |
The 18 most common of 19 parts.
Questions
How big is the Motor PCB?
It measures 56 × 56 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Motor use?
19 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Motor KiCad files?
From the jgrage/stepper-board repository on GitHub, at the commit this page was made from: the board is motor.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Motor design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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