newRPL keyboard overlay

[lmamakos]

I recently discovered newRPL, and before I knew it, I find that I own an HP 39gs, HP 40gs and (most recently) an HP 50g with newRPL installed! I can't explain how this happened, but I'm sure many of you understand how such a thing could happen.

After using newRPL with a handy printed mock-up of the keyboard nearby, I decided to design a keyboard overlay with updated legends to match how newRPL works. I used OpenSCAD to produce an outline with all of the keyboard holes in the right places (or at least pretty close!) I then imported that as a layer in Inkscape to add legends around each key for the left- and right-shifted functions as well as alpha characters. The key tops also have correct labels, too.

In a feat that probably will never be repeated, I somehow convinced my wife that, really, she needed to add a Cricut Maker cutter to her collection of scrapbooking tools. And that it was her idea, at that.

So after printing and cutting about a dozen variations and tweaks, I printed on vinyl and cut some overlays that are installed on my 39gs and 40gs calculators, including keytops. The printing bit happened on a Brother laser printer on a matte finish vinyl material.

Now I'm in sort of a testing phase, to see how durable the printing is, especially on the keycaps. I'm at some sort of "minimum viable product" stage where this is workable and I need to play a bit before continuing any further refinement. It looks like this:
   

The full resolution version rendered at 2400 DPI is available, also linked off a blog post.

I'm interested in feedback on what legends are missing or wrong. I'll make the OpenSCAD and Inkscape source files available after the next round of changes. I may yet still tweak some of the key spacing..