Search found 30 matches

by MeinKuipers
Sun Oct 11, 2020 12:44 pm
Forum: DM41X
Topic: new BETA version of M2kM available for handling .ram files
Replies: 1
Views: 164

new BETA version of M2kM available for handling .ram files

It is now possible to open .ram files with M2kM. This will create a number of.rom files which can be handled in the MOD File tab to create a MOD file for use in V41, DM41X, MLDL2000 or a .rom file for the 41CL, Clonix/NoVRAM or MLDL2000. I have a new BETA available for M2kM. Many, many changes under...
by MeinKuipers
Fri Oct 02, 2020 4:38 pm
Forum: DM42
Topic: DM42 with homemade printer
Replies: 46
Views: 2699

Re: DM42 with homemade printer

Here in NL things are pretty easy. We can prepare the package and print the labels (including the customs declaration), pay online and we take that to the PO. Actually we do not have PO's anymore, these are usually desks in supermarkets, pretty well spread across town and very service oriented. At t...
by MeinKuipers
Fri Oct 02, 2020 1:28 pm
Forum: DM42
Topic: DM42: IR-receiver photodiode specs?
Replies: 6
Views: 356

Re: DM42: IR-receiver photodiode specs?

There is a Technical Intefacing Guide for the 82240B IR printer (downloadable here: https://www.hpcalc.org/details/4742 ) which has all the gory details and specifies the 940 nm as quoted earlier. From my own experience I can confirm that the IR frequency is uncritical, but the modulation frequency ...
by MeinKuipers
Sun Jun 28, 2020 9:33 pm
Forum: Discuss!
Topic: Use the IR of DM42(or any HP calculator) for commercial IR?
Replies: 25
Views: 3712

Re: Use the IR of DM42(or any HP calculator) for commercial IR?

Although i own a HP82240, I'm experimenting to create a RedEye to serial interface using eighter a microcontroller or an FPGA (trying both paths) The Idea is to hookup small ticket printers i found in my junkbox. It'l take some time to get results but if you are interested i'll drop some posts late...
by MeinKuipers
Sun May 24, 2020 2:59 pm
Forum: Feature suggestions
Topic: Scrolling CAT listings anyone?
Replies: 29
Views: 1267

Re: Scrolling CAT listings anyone?

Really good idea!
by MeinKuipers
Fri May 15, 2020 9:19 am
Forum: Feature suggestions
Topic: Blue Sky feature idea relating to flash memory
Replies: 2
Views: 195

Re: Blue Sky feature idea relating to flash memory

Wishful thinking ... functionality to have this kind of access would be nice though.
And the possibilities of IR communication (one way at least) are not exhausted, you could do much more than just printer emulation
by MeinKuipers
Sun May 10, 2020 12:46 pm
Forum: Update Announcements
Topic: DM41X V1.12a / DMCP 3.19 update
Replies: 36
Views: 1479

Re: DM41X V1.12 / DMCP 3.19 update

Just did a quick test with the new firmware, great work on all aspects. And printing is really fast, no problems found at all with the delay set to zero. I made a few screen recordings with the old and new firmware with the print emulator, and put them in my DropBox here: https://www.dropbox.com/sh/...
by MeinKuipers
Tue May 05, 2020 9:11 am
Forum: DM41X
Topic: Display update difference between DM41X and HP41
Replies: 40
Views: 1811

Re: Display update difference between DM41X and HP41

As for firm announcements, I'll bet I can do that before you can assemble one of Meindert's IR receivers (which, IMHO, you should). In the first place, it is not mine, but Martin Hepperle's work, and I have loads of fun with the HP82240 printer emulator on my PC. And maybe we get a solution to work...
by MeinKuipers
Sun Apr 26, 2020 2:38 pm
Forum: Update Announcements
Topic: Source for additional MOD files
Replies: 88
Views: 4191

Re: Source for additional MOD files

By editing the MOD file you can exactly indicate the port you want to plug the module in, so you are in full control. Somethimes you may need to experiment a bit, and it will not work very well with HEPAX, but in general it gives you what you want. Editing can be done easily with the MLDL2000 Manage...
by MeinKuipers
Thu Apr 16, 2020 9:14 pm
Forum: DM41X
Topic: IR printer observations
Replies: 7
Views: 469

Re: IR printer observations

I have posted my write up at https://www.hpmuseum.org/forum/thread-14858.html . Good luck when reproducing, this is really a fun project and easy to implement. I did some more digging in the DM41X printer module, and quickly came to the conclusion that it is identical to the original Printer 1E rom ...