TransSys Internetworking (Posts about calculators)

newRPL Keypad Overlay - v7

Louis Mamakos — Sun, 18 Apr 2021 01:42:27 GMT

I was slightly premature in declaring done before. Here's another version of the newRPL keypad overlay with a few minor tweaks in the button spacing.

Version 7 of keypad overlay

newRPL Keypad Overlay - v6

Louis Mamakos — Mon, 05 Apr 2021 03:46:58 GMT

The newRPL keypad overlay is done! (Well, done enough, at least for now!)

Just a few tweaks on the design: - Rounded the bottom of the openings for the keys on the keypad - Tweaked the position of a few keys for (maybe) better alignment. - Rounded some of the corners of the overlay background.

All the files are available for download if you'd like to print some for yourself.

New overlay

Here's what the overlay looks like now.

Version 6 of keypad overlay

newRPL keyboard overlay version 5

Louis Mamakos — Sun, 28 Mar 2021 22:05:16 GMT

Just an update on the newRPL keypad overlay.

Many mistakes have been made, much has been learned, there has been more progress than retreat. I feel as if I'm getting closer to the end of this process, rather than just further from the beginning of it.

I've incorporated some suggestions in the thread in the overlay. I've also added another label intended to be stuck on the back of the calculator, sized to fit in the shallow recess that has the serial number sticker. This mostly contains the various ON-hold key combinations that may not be used as frequently, but are helpful.

newRPL keyboard template for HP 39gs, 40gs and 50g

Louis Mamakos — Wed, 17 Mar 2021 02:23:40 GMT

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.