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DB48X: HP48-like RPL implementation for DM42
07-04-2024, 12:36 AM
Post: #232
RE: DB48X: HP48-like RPL implementation for DM42
(07-03-2024 11:39 PM)rprosperi Wrote:  As soon as cheap CR2032 batteries get below ~2.9V, they are unreliable. The DMCP is sensing the voltage under load and is attempting to display the actual voltage as seen with a load present, which is why it appears to be lower than the DMM is showing.

In any case, but a good quality CR2302 cell in (Energizer, Panasonic, Toshiba, etc.) and leave the cheap Chinese cells for other less demanding devices and you'll be OK.

I put an energizer in it when I got home and that solved the problem. As I mentioned, the one I used earlier was from a VERY suspect batch that I vowed never to use again because they would go dead so quickly in just about any device. I'm showing a reading above 3v now on the status bar. I didn't check this one with a meter though...

WP31S/WP34S, WP43/C47, newRPL (various), and DB48X adhesive and tabbed overlays:
https://www.hpmuseum.org/forum/thread-20113.html
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DB48X v0.4.8 is out - c3d - 10-22-2023, 11:31 PM
Release v0.5.0: Statistics and flags - c3d - 11-20-2023, 08:57 AM
v0.6.5: Minor bug fixes - c3d - 02-11-2024, 11:23 PM
Release 0.7.1 "Whip" - Bug fixes - c3d - 03-04-2024, 12:46 AM
DB48X v0.7.4 release is out - c3d - 04-14-2024, 03:05 PM
DB48X v0.7.6: Solving menu - c3d - 05-13-2024, 12:04 AM
DB48X v0.7.7: Units in solver - c3d - 06-02-2024, 11:36 PM
RE: DB48X: HP48-like RPL implementation for DM42 - spiff72 - 07-04-2024 12:36 AM



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