2 layers28.3 × 39.8 mm
LevelShifter
gusmanb/logicanalyzer
24 channel, 100Msps logic analyzer hardware and software
21 parts5.1kGPL-3.0
2 layers198.1 × 95.3 mm
IEC Switch
RetroNynjah/IEC-Switch2Switch for Commodore disk drives
- Size
- 198.1 × 95.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 21
- Nets
- 77
- Pads
- 250
- Tracks, vias
- 250, 0
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 6 Dec 2025
- Updated
- 6 Dec 2025
Overview
IEC Switch is an open-source printed circuit board by RetroNynjah, from the RetroNynjah/IEC-Switch repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 198.1 × 95.3 mm with 21 parts on 77 nets, routed with 250 tracks and 0 vias.
Its parts include 8 connectors and 7 switches.
README
README.mdIEC Switch
A switch for Commodore 8-bit computers that allows connection of six IEC disk devices (six cables) to two computers.
The chains can be switched on an off individually.
It doesn't allow more devices to be active at the same time but it allows devices to be connected and disconnected without touching any cables.
I.e. if you have three devices that are all using device number 8 you can activate one at a time using switches without disconnecting the other two.
The switch by the front input toggles connection between ccomputer on the rear input and a computer on the front input.
Components
The only components on the PCB are eight female 6-pin DIN connectors and seven latching switches (E-Switch PBH6U). A suitable part is PBH6UEENAG1DBLK.
Enclosure
A suitable enclosure can be built using PCBs. All gerbers are included in this repository.
Parts list
| Part | Qty | Comments |
|---|---|---|
| Top/Bottom PCB | 2 | |
| Side PCB | 2 | |
| Front PCB | 1 | |
| Back PCB | 1 | |
| Stand-off | 4 | M3 40 mm female-female, brass or plastic |
| Stand-off | 4 | M3 5 mm male-female, brass or plastic |
| Rubber feet | 4 | With screw mounts suitable for M3 screws |
| Screw | 8 | M3 7 mm. For bottom feet and top |
Assembly
- Mount four rubber feet on bottom PCB and secure with screws and 5mm stand-offs.
- Install PCB over stand-offs and secure with 40 mm stand-offs from top
- Add front, back and sides and lock with top PCB
- Secure top PCB using four screws
All solder pads should be facing inward and can be used to secure enclosure pad using solder. This shouldn't be necessary and complicates disassembly.
Parts
21| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | DIN-6 | DIN-6 multi:DIN-6 multi shielded | J1, J2, J3, J4, J5, J6, J7, J8 |
| 7 | PBH6U | E-Switch_PBH6U:PBH6U | SW1, SW2, SW3, SW4, SW5, SW6, SW7 |
| 4 | MountingHole | MountingHole:MountingHole_3.5mm_Pad_TopBottom | H1, H2, H3, H4 |
| 2 | LOGO | LOGO | G***, G*** |
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Questions
How big is the IEC Switch PCB?
It measures 198.1 × 95.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the IEC Switch use?
21 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 IEC Switch KiCad files?
From the RetroNynjah/IEC-Switch repository on GitHub, at the commit this page was made from: the board is pcb/rev1/kicad schematics/IEC Switch.kicad_pcb and its schematic enclosure/rev1/kicad-schematics/IEC Switch Case Back Rev 1.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the IEC Switch 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).