HP-25C Eumulator

[Chris Chung]

(01-03-2015 05:42 PM)Guenter Schink Wrote:  As I have one leather flip-open pouch from Michael Steinmann I figured its an almost perfect fit for the NP25. To stabilize the thing I folded an A4 sheet of paper to put under the lower half of the PCB. Seems to be hightech

Really nice on a leather case / folder. It appears the Swiss Micro is credit card sized. The NP-25 is a bit narrower and a bit taller. I would have made it credit card sized but as the width would exceed 50mm it cost more to fabricate the PCB.

(01-04-2015 07:56 PM)BobVA Wrote:  I finally tacked together a little brass frame to let me install a display filter. I insulated the display connections with kapton tape to prevent any fireworks.
I'll probably paint the frame white if I decide to leave it on.

It's a lot more readable in bright light with the filter, but the bare display has more nerd panache.

Now what you did make me look for brass coloured buttons to match the display housing. Would make the unit look really "steam-punk".