Search found 292 matches

by keithdalby
Wed Sep 05, 2018 6:26 am
Forum: Hardware issues
Topic: Battery life
Replies: 18
Views: 1309

Re: Battery life

Sorry what was a current at OFF stage? 80 uA? That's right. 'twas draining far more charge while turned off than on. Michael asked me to send my PCB back to him to investigate and sent me a replacement. The replacement does not have this issue at all. The PCB was replaced at the start of March this...
by keithdalby
Wed Sep 05, 2018 4:10 am
Forum: Hardware issues
Topic: Battery life
Replies: 18
Views: 1309

Re: Battery life

Michael exchanged my beta calculator for a production model (the PCB part) and the battery drain issue vanished. Maybe connect an ammeter in series with a regulated supply and see what the current does when the calculator is swiched off? Sounds like you've the same issue I had. I am curious what the...
by keithdalby
Mon Sep 03, 2018 7:52 pm
Forum: DM42
Topic: Python to RPN converter
Replies: 18
Views: 3672

Re: Python to RPN converter

More importantly, is there a decent implementation of HP-like RPN for the numworks machine yet?
by keithdalby
Tue Aug 28, 2018 6:58 am
Forum: Usage tips, tricks and problem reports
Topic: Programming a Lookup Table for Inflation Calendar on DM42
Replies: 4
Views: 209

Re: Programming a Lookup Table for Inflation Calendar on DM42

Store them in a 2-column matrix (year, index) then it should he be trivial to iterate through the matrix looking for the year you want to start from, etc.
by keithdalby
Thu Jul 12, 2018 9:19 pm
Forum: Update Announcements
Topic: DM42 Firmware V3.5 available
Replies: 85
Views: 9000

Re: DM42 Firmware V3.5 available

I'm a simple man. I don't want to mess around compiling sources or whatever. I want a simple system of 'plug it in and double click' (like we had).
by keithdalby
Sat Jul 07, 2018 11:09 am
Forum: Update Announcements
Topic: DM42 Firmware V3.5 available
Replies: 85
Views: 9000

Re: DM42 Firmware V3.5 available

Any changes?
by keithdalby
Sun Jul 01, 2018 7:11 am
Forum: DM42
Topic: Greek letters
Replies: 5
Views: 1056

Re: Greek letters

MikeOR wrote:
Sun Jul 01, 2018 6:18 am
It's strange that the Euro sign is missing - but maybe Michael has foreseen it's demise 😂
HP42s, introduced in 1987.
Euro, rolled out slowly in the late 1990s.
by keithdalby
Sat Jun 30, 2018 3:37 pm
Forum: DM42
Topic: Countdown
Replies: 13
Views: 790

Re: Countdown

Using a matrix as a lookup table for the value for XTOA? Good idea.
by keithdalby
Fri Jun 29, 2018 7:03 am
Forum: Usage tips, tricks and problem reports
Topic: Incongruity of the PIXEL function
Replies: 9
Views: 721

Re: Incongruity of the PIXEL function

I've not used AGRAPH, but surely it should be possible to AGRAPH a single pixel (what character would that be)? In which case, a simple RPN routine could be written to turn off pixels.
by keithdalby
Sun Jun 24, 2018 6:55 am
Forum: DM42
Topic: DM 42 display
Replies: 4
Views: 435

Re: DM 42 display

Sometimes I miss the display format from the beta testing models where there was the simulated HP42s screen at the bottom and the four stack levels shown above it. That screen refreshed much faster than it does now (when my stopwatch program was running, for example). It would be nice to see that op...