HP-25C Eumulator

[Chris Chung]

@massimo

There are some comments on the youtube video regarding this. Basically the whole thing will be open sourced (also my thanks to the nonpareil author Eric Smith). There could be a group-build / group-buy opportunity when the project is stable enough. I.e. if there will be a kit, I need to make sure everyone can build it.

This is the 1st prototype and I had made fixes to the design and currently into another version of PCB. It came out OK but unfortunately the silkscreen prints had messed up.

I had attached a photo of it, may be I can get some advice from this forum. For most of the scientific button labels, I had use other S/W to generate the scientific notions / symbols and combined into the PCB as "images". It turns out the PCB manufacturer had problem w/ those and it's not printed (instead I got these two big dots under the top-left-most button.

It would be nice if I can find a way to "impose" the "F" and "G" function labels in color. I am planning to just "write" on it for the time being. I saw all the nice labels stickers for WP34S, etc. Not sure if it could somehow be done on a single PCB build like mine. I welcome any suggestions to this.