Search found 104 matches

by Vitasam
Wed Jul 01, 2020 12:28 pm
Forum: Hardware issues
Topic: DM42 battery life time
Replies: 2
Views: 166

Re: DM42 battery life time

Thanks! Indeed my selection of the battery was not a best one :) But I will keep measurement for a while, then will switch to something reliable
by Vitasam
Wed Jul 01, 2020 8:11 am
Forum: Hardware issues
Topic: DM42 battery life time
Replies: 2
Views: 166

DM42 battery life time

Hello,
I started to log the battery voltage, roughly once a week. Without using the calculator at all. So, switching it ON once a week.
Is this a a normal discharging curve?

Software is 3.18
by Vitasam
Wed Mar 11, 2020 6:59 pm
Forum: Hardware issues
Topic: DM42 schematics?
Replies: 10
Views: 5127

Re: DM42 schematics?

My question was mostly out of curiosity - I'm not going to manufacture DM42 clone nor copy it in to e.g. HW emulator :)
by Vitasam
Wed Mar 11, 2020 6:03 pm
Forum: Hardware issues
Topic: DM42 schematics?
Replies: 10
Views: 5127

Re: DM42 schematics?

Some part of SW is open, according to the license.
by Vitasam
Wed Mar 11, 2020 5:45 pm
Forum: Hardware issues
Topic: DM42 schematics?
Replies: 10
Views: 5127

Re: DM42 schematics?

pcscote wrote:
Wed Mar 11, 2020 3:06 pm
You may find some information in this thread: DM42: The internal view (hardware components)

Sylvain
Thanks!
by Vitasam
Wed Mar 11, 2020 5:45 pm
Forum: Hardware issues
Topic: DM42 schematics?
Replies: 10
Views: 5127

Re: DM42 schematics?

mezoganet wrote:
Wed Mar 11, 2020 5:26 pm
Vitasam wrote:
Wed Mar 11, 2020 2:02 pm
Hello,
is DM42 schematics a proprietary thing or it is available for public domain?
I would guess hard and soft are of course proprietary... and it wold sound normal !
Yes, totally normal :)
by Vitasam
Wed Mar 11, 2020 2:02 pm
Forum: Hardware issues
Topic: DM42 schematics?
Replies: 10
Views: 5127

DM42 schematics?

Hello,
is DM42 schematics a proprietary thing or it is available for public domain?
by Vitasam
Sat Nov 09, 2019 12:29 pm
Forum: Hardware issues
Topic: USB-host (USB-OTG)
Replies: 5
Views: 2687

Re: USB-host (USB-OTG)

Yes, I was thinking about powered USB hub. So, basically it is the only matter of DM42 FW, HW is capable, right?
by Vitasam
Wed Nov 06, 2019 6:06 am
Forum: Hardware issues
Topic: USB-host (USB-OTG)
Replies: 5
Views: 2687

USB-host (USB-OTG)

Just found this external module for TI calculators.

As far as I know stm32 of DM42 can support USB-OTG. In theory, is it possible to create, e.g. USB-UART profile or something similar?
by Vitasam
Sun Nov 03, 2019 11:01 am
Forum: Software Library
Topic: Graphics utilities: H/V lines, grids and tiles
Replies: 3
Views: 4249

Re: Graphics utilities: H/V lines, grids and tiles

Great job!

It will be nice to have a kind of "DM42-extension" for HP42s language - graphics primitives.