Open Source PCB to revive the project

[B9KGF]

A lot of components have gone up in price and/or are no longer available. Currently it is almost impossible to make a unisolder.
By open sourcing the PCBs, updates to the BOMs and footprints would bring the project back, as well as add new features (rotary encoder, larger displays, tip grounding with a GPIO instead of an IR system).

[sparkybg]

Which components? There was shortages, but now, as far as I can see, everything is again available from Farnell for example.

Most of the parts with shortage in the past were closely related with firmware (amp input switch, digital pots, DACs), so it is not that easy to replace them.

For tip grounding (I assume you are talking for "iron-in-stand" detector) - it is, in fact GPIO. You can do the same with a simple switch or any other solution that can act as switch, which is exactly what IR detector does. There is also a touch sensing solution in the thread at dangerousprototypes.

PCBs are made with a closed source, paid software. I opensourced everything I could.

Edit: Moreover, routing on the PCB is critical in many aspects. There were at least 3 attempts from other people to make PCBs, all with poor results - difference between channels, offsets due to current not routed where it should go, ground loops and so on. With microamp current sources and gain of 750, there are some rules to be respected, and it seems not that much people know/care about them.

[JBlocklove]

Looks like you've made the schematic and, I assume, PCB layout in Altium Designer. There's absolutely no reason that using Altium would mean you can't open source those files, Altium themselves even specifically highlight open source projects which were made using their software: https://resources.altium.com/p/open-source-hardware-projects-in-altium-designer.

People who want to mess with this might also have access to Altium or want to port the project to something more open-source friendly like KiCAD, so having those files in the repo would be invaluable for people to be able to make updates and changes. Just because there are challenges involved with the routing and such doesn't mean that no one else could figure it out.

If you don't want to share the source that's fine, it's your project, but the fact that it's made using a closed source software shouldn't be the reason.