Things to improve on the hardware

If you're having problems with the hardware of a DM42, post about them here.
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lpoujoulat
Posts: 1
Joined: Wed Jan 03, 2018 11:04 pm

Things to improve on the hardware

Post by lpoujoulat » Sun Jul 08, 2018 2:59 pm

Hello all,

I want first to tell how I like my DM42 (S/N 222). It's now my primary calculator. After some months using it, I just want to share my thoughts about some things that should/could be improved to make it perfect on the hardware side. These are by decreasing importance:
- The keyboard (see other threads about this),
- The high light reflection on the screen,
- The USB connector that is a bit too inward and don't work with all cables,
- The assembly of the two plates is a bit "creaky" on the middle,

Will a new release of the hardware be done in the future ? If the DM43s comes to live one day, it would be good to have this fixed to get the best of the calculators.

Regards
Laurent

mcc
Posts: 167
Joined: Fri Jun 23, 2017 3:10 am

Re: Things to improve on the hardware

Post by mcc » Mon Jul 09, 2018 1:34 am

Hi,

I would add

- a small capacitor in parallel to the battery

to avoid program loss in case of dropping the calculator on a hard surface
accidentally. It happens to me.
These drops disconnect the battery for a very short time from one of its
contacts and without power the RAM is cleared (and maybe the CPU is reseted ).
he capacitor would provide energy in that very moment.

Cheers
Meino
DM 42 - SN: 00373, Firmware v.:3.9.1 / 3.9.1 as compiled by SwissMicros

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Over_score
Posts: 12
Joined: Fri May 05, 2017 7:37 pm
Location: France

Re: Things to improve on the hardware

Post by Over_score » Mon Jul 09, 2018 1:16 pm

lpoujoulat wrote:
Sun Jul 08, 2018 2:59 pm
- The keyboard (see other threads about this)
+1 (a very big +1 :mrgreen: )
mcc wrote:
Mon Jul 09, 2018 1:34 am
- a small capacitor in parallel to the battery
+1

Cheers
Martin
DM42 SN:00284

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