DM42- clock losing time

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H2X
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Re: DM42- clock losing time

Post by H2X » Wed May 15, 2019 4:34 am

SwissMicros, when are you going to make a DM-01? There seems to be considerable interest... :D

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DM42 SN:00040 | Without deviation from the norm, progress is not possible - Frank Zappa

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akaTB
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Re: DM42- clock losing time

Post by akaTB » Wed May 15, 2019 5:33 am

H2X wrote:
Wed May 15, 2019 4:34 am
SwissMicros, when are you going to make a DM-01? There seems to be considerable interest... :D

Image
Well, the chip (not cheap!) is already here (http://www.panamatik.de/html/hp-01_repair_kit.html).
What we need now is a modern titanium case and we are done! ;)
Greetings,
    Massimo

-+×÷ left is right and right is wrong :twisted: Casted in gold

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H2X
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Re: DM42- clock losing time

Post by H2X » Wed May 15, 2019 5:39 am

akaTB wrote:
Wed May 15, 2019 5:33 am
H2X wrote:
Wed May 15, 2019 4:34 am
SwissMicros, when are you going to make a DM-01? There seems to be considerable interest... :D

https://hpmuseum.org/01cldi.jpg
Well, the chip (not cheap!) is already here (http://www.panamatik.de/html/hp-01_repair_kit.html).
What we need now is a modern titanium case and we are done! ;)
Accurate +-3ppm time with temperature compensated quartz. Full calculator capability,
DM42 SN:00040 | Without deviation from the norm, progress is not possible - Frank Zappa

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H2X
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Re: DM42- clock losing time

Post by H2X » Wed May 15, 2019 8:28 am

... but of course, a potential future DM-01 should be RPN (ducking for incoming RPL flak...)! :D
DM42 SN:00040 | Without deviation from the norm, progress is not possible - Frank Zappa

toml_12953
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Re: DM42- clock losing time

Post by toml_12953 » Wed May 15, 2019 10:37 am

H2X wrote:
Wed May 15, 2019 4:34 am
SwissMicros, when are you going to make a DM-01? There seems to be considerable interest... :D

Image
I want the portrait version! :D
Tom L

My father was a man of the cloth. He was a tailor.

DM42 SN: 00025 (Beta)
SN: 00221 (Shipping)

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akaTB
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Re: DM42- clock losing time

Post by akaTB » Wed May 15, 2019 11:49 am

toml_12953 wrote:
Wed May 15, 2019 10:37 am
I want the portrait version! :D
I could concur, in this case.
8-)
Greetings,
    Massimo

-+×÷ left is right and right is wrong :twisted: Casted in gold

Thomas Okken
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Re: DM42- clock losing time

Post by Thomas Okken » Wed May 15, 2019 12:15 pm

My test has run long enough to show results:

DM42: 13 s fast after 88 h = 41 ppm
HP-50g: 3 ¼ s slow after 50.3 h = 18 ppm

The DM42 is a beta unit, SN 62.

I do have a data logger recording temperature and humidity in the same room, so I could provide those numbers if necessary. I didn't keep track of radiation levels, though. :lol:

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H2X
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Re: DM42- clock losing time

Post by H2X » Wed May 15, 2019 12:57 pm

akaTB wrote:
Wed May 15, 2019 11:49 am
toml_12953 wrote:
Wed May 15, 2019 10:37 am
I want the portrait version! :D
I could concur, in this case.
8-)
You are strangely quiet about the placement of the arithmetic operator keys... :D
DM42 SN:00040 | Without deviation from the norm, progress is not possible - Frank Zappa

Geoff Quickfall
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Re: DM42- clock losing time

Post by Geoff Quickfall » Wed May 15, 2019 6:07 pm

Bernhard at Panamatik has already created the board for the HP 01. Only thing is it needs the LED block from a donor HP 01. Now if someone could create a case and LED tech for the Panamatik board.

Always wondered why there is no Apple Watch app simulating the HP 01. Maybe making a scientific version of the watch! Bernhard has stated that he can code the HP 01 board he has created (I have two) into a scientific rpn version but how does one create the overlay?

I too, would like to see an RPN LCD Scientific version of the HP 01. HP actually had and LCD version prototyped for production but it was cancelled.

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H2X
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Re: DM42- clock losing time

Post by H2X » Wed May 15, 2019 7:56 pm

Geoff Quickfall wrote:
Wed May 15, 2019 6:07 pm
Bernhard at Panamatik has already created the board for the HP 01. Only thing is it needs the LED block from a donor HP 01. Now if someone could create a case and LED tech for the Panamatik board.

Always wondered why there is no Apple Watch app simulating the HP 01. Maybe making a scientific version of the watch! Bernhard has stated that he can code the HP 01 board he has created (I have two) into a scientific rpn version but how does one create the overlay?

I too, would like to see an RPN LCD Scientific version of the HP 01. HP actually had and LCD version prototyped for production but it was cancelled.
No, no! Red LED's are the way to go... :D
DM42 SN:00040 | Without deviation from the norm, progress is not possible - Frank Zappa

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