2 layers107 × 54 mm
2 layers40 × 80 mm
- Size
- 40 × 80 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 15
- Nets
- 25
- Pads
- 69
- Tracks, vias
- 104, 2
- Pours
- 46
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 13 Nov 2024
- Updated
- 25 Nov 2024
Overview
Unit is an open-source printed circuit board by hawkowl, from the hawkowl/split-flap repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 40 × 80 mm with 15 parts on 25 nets, routed with 104 tracks and 2 vias.
It is built around the ULN2003A. Its parts include 8 connectors, 2 ICs and 1 capacitor. It belongs with the RISC-V boards of this library.
Main components
1README
README.mdSplit-Flap
This repository contains:
PCB/Unit, comprising of the PCB for the per-module controllerUnit/, comprising of the firmware for the individual module controllerController/, comprising of the firmware for a RP2040 controller for multiple modules
Sources
- Original Design: Split Flap Display by David Kingsman.
- Flaps: OpenSCAD flaps by rtitmuss
- Frame: Modification by rtitmuss
Parts
15| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 1 | +12V PWR In | hawkowl:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical_LABELLED | J6 |
| 1 | +12V PWR Out | hawkowl:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical_LABELLED | J7 |
| 1 | 0.1uF | hawkowl:C_1206_3216Metric_Symbol | C3 |
| 1 | 28BYJ-48 Stepper | hawkowl:JST_XH_B5B-XH-A_1x05_P2.50mm_Vertical_LABELLED | J3 |
| 1 | CH32V003AxMx | Package_SO:SOP-16_3.9x9.9mm_P1.27mm | U1 |
| 1 | Conn_02x05_Odd_Even | Connector_PinSocket_2.54mm:PinSocket_2x05_P2.54mm_Vertical | J8 |
| 1 | Hall Effect Sensor | hawkowl:JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical | J2 |
| 1 | I2C Input | hawkowl:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical_LABELLED | J4 |
| 1 | I2C Output | hawkowl:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical_LABELLED | J5 |
| 1 | Programming | hawkowl:JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical | J1 |
| 1 | ULN2003A | Package_SO:SOP-16_3.9x9.9mm_P1.27mm | U2 |
Questions
How big is the Unit PCB?
It measures 40 × 80 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Unit use?
15 parts, built around the ULN2003A. 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 Unit KiCad files?
From the hawkowl/split-flap repository on GitHub, at the commit this page was made from: the board is PCB/Unit/unit.kicad_pcb and its schematic PCB/Unit/unit.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Unit design in my own project?
Its repository publishes it under the GPL-3.0 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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