

Parallel adapter
The Valiant Turtle 2
- Size
- 39.2 × 32 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 4
- Nets
- 16
- Pads
- 39
- Tracks, vias
- 90, 2
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 11 Dec 2024
- Updated
- 6 Jan 2025
Overview
Parallel adapter is an open-source printed circuit board by simoninns, from the simoninns/valiant-turtle-2 repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 39.2 × 32 mm with 4 parts on 16 nets, routed with 90 tracks and 2 vias.
It belongs with the interfaces and adapters boards of this library.
README
README.mdValiant Turtle 2
The Valiant Turtle 2 is a modern re-creation of the Valiant Turtle robot from the 1980s. The project is fully open-hardware and open-software and is designed to be 3D printed and constructed from widely available parts.

Please see the project Wiki for details of the project and for access to the project documentation.
Project status
This project is at first release. Please read the wiki and see YouTube for consruction videos (detailed in the wiki also).
Author
Valiant Turtle 2 is designed and maintained by Simon Inns.
Software License (GPLv3)
Valiant Turtle 2 is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Valiant Turtle 2 is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.Hardware License (Creative Commons BY-SA 4.0)
Please see the following link for details: https://creativecommons.org/licenses/by-sa/4.0/
You are free to:
Share - copy and redistribute the material in any medium or format Adapt - remix, transform, and build upon the material for any purpose, even commercially.
This license is acceptable for Free Cultural Works.
The licensor cannot revoke these freedoms as long as you follow the license terms.
Under the following terms:
Attribution - You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
ShareAlike - If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.
No additional restrictions - You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
Parts
4| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2 |
| 1 | BBC Micro Userport | Connector_IDC:IDC-Header_2x10_P2.54mm_Horizontal | J1 |
| 1 | DA15_Valiant_Parallel | Connector_Dsub:DSUB-15_Female_Horizontal_P2.77x2.84mm_EdgePinOffset9.90mm_Housed_MountingHolesOffset11.32mm | J2 |
Questions
How big is the Parallel adapter PCB?
It measures 39.2 × 32 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Parallel adapter use?
4 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 Parallel adapter KiCad files?
From the simoninns/valiant-turtle-2 repository on GitHub, at the commit this page was made from: the board is kicad/acorn_userport_adapter/parallel_adapter.kicad_pcb and its schematic kicad/acorn_userport_adapter/parallel_adapter.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Parallel adapter 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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