(10-02-2021 02:15 PM)Eddie W. Shore Wrote:  I am thinking of buying an infrared printer, specifically the HP 82240B. It would be for documentation purposes only because I would have type them again when I want to post programs and formulas online.

Bummer that the printer won't work with the HP Prime but I think it works with the Swiss Micros DM41X/DM42?

(10-02-2021 03:51 PM)Eddie W. Shore Wrote:  I agree, the Online emulator is a life/time saver. I use Free42 PC emulator for my DM42 programs.

Is $80 to $100 a good price? I am going to try to get on with an AC Adaptor.

(10-02-2021 04:31 PM)toml_12953 Wrote:  

(10-02-2021 03:51 PM)Eddie W. Shore Wrote:  I agree, the Online emulator is a life/time saver. I use Free42 PC emulator for my DM42 programs.

Is $80 to $100 a good price? I am going to try to get on with an AC Adaptor.

I usually pay about $150 so, yes, $80 - $100 is a great price! Make sure the AC adapter you get has plenty of power - at least 1A. I prefer to use a 2A supply. HP underestimated the power usage so even if you leave the printer plugged in to the adapter, the batteries are still used up when printing long listings. Also, you can either use the emulator or physical calculator to print listings. As for the DM42, you can use the USB disk facility to copy a program to a PC, then put that file through an online translator to convert it to text and copy and paste that. There's never a need to copy programs by hand. https://technical.swissmicros.com/decoders/dm42/

(10-03-2021 07:19 PM)ijabbott Wrote:  I got a 12VDC 3A switch-mode PSU for mine, and it seems to print fine without batteries installed.

(10-03-2021 11:15 PM)Christoph Giesselink Wrote:  Minor hint to the power supply. I'm using a 12VAC 1.58A apdater over the years. So it must not be a DC apdater.

(10-04-2021 05:03 PM)ijabbott Wrote:  

(10-03-2021 11:15 PM)Christoph Giesselink Wrote:  Minor hint to the power supply. I'm using a 12VAC 1.58A apdater over the years. So it must not be a DC apdater.

Yes, I think the original HP adapter was also AC. But DC works too through the FULL BRIDGE RECTIFIER!! It is NOT a puny single-diode rectifier.

(So also, it doesn't care about any centre positive vs centre negative nonsense!)

Actually, come to think of it, I wonder what rating the bridge rectifier has, and could it be damaged by a beefy PSU when printing without batteries?

(10-04-2021 05:03 PM)ijabbott Wrote:  Actually, come to think of it, I wonder what rating the bridge rectifier has, and could it be damaged by a beefy PSU when printing without batteries?

(10-05-2021 03:28 PM)Dave Britten Wrote:  I think it's definitely worth having a printer if you've got any of the supported models. It's especially handy with the 17BII or 19BII running in trace mode so you can have an audit trail of financial calculations, or print out the whole set of TVM variables, for example. It's great with the 42S since you can make use of the printer within programs. And of course it's useful for making hard copies of solver equations or programs (though you'll want to digitize them since thermal paper isn't exactly archival quality).

Personally, I feel like the wired printer for the HP 41 (82143A) is a bit nicer - and quieter - but the IR model gets the job done. It also runs on AA batteries, which are easier to deal with.

Off the top of my head, it works with these models, so if you've got a few of them, it's worth picking one up.

17B
17BII (don't know about the 17BII+)
18C
19B
19BII
27S
28C
28S
41C with the IR printer module (not cheap!)
42S
48S/SX/G/GX
DM41X
DM42

Not sure about the status of the 49G/50G family, but it might work with some of them.

I think it will also work with the 95LX and maybe 100LX/200LX if you install some kind of drivers to support it, but I've never experimented with this.

(10-06-2021 06:13 PM)Jlouis Wrote:  

(10-05-2021 03:28 PM)Dave Britten Wrote:  I think it's definitely worth having a printer if you've got any of the supported models. It's especially handy with the 17BII or 19BII running in trace mode so you can have an audit trail of financial calculations, or print out the whole set of TVM variables, for example. It's great with the 42S since you can make use of the printer within programs. And of course it's useful for making hard copies of solver equations or programs (though you'll want to digitize them since thermal paper isn't exactly archival quality).

Personally, I feel like the wired printer for the HP 41 (82143A) is a bit nicer - and quieter - but the IR model gets the job done. It also runs on AA batteries, which are easier to deal with.

Off the top of my head, it works with these models, so if you've got a few of them, it's worth picking one up.

17B
17BII (don't know about the 17BII+)
18C
19B
19BII
27S
28C
28S
41C with the IR printer module (not cheap!)
42S
48S/SX/G/GX
DM41X
DM42

Not sure about the status of the 49G/50G family, but it might work with some of them.

I think it will also work with the 95LX and maybe 100LX/200LX if you install some kind of drivers to support it, but I've never experimented with this.

Yes, it works on the 49G and 50G.

Cheers

(10-06-2021 07:35 PM)Kiwi Wrote:  Just for completeness, you can also add the HP38G and HP48G+ to the list.

(10-03-2021 11:15 PM)Christoph Giesselink Wrote:  Minor hint to the power supply. I'm using a 12VAC 1.58A apdater over the years. So it must not be a DC apdater.

(10-06-2021 06:56 PM)Eric Rechlin Wrote:  

(10-06-2021 06:13 PM)Jlouis Wrote:  Yes, it works on the 49G and 50G.

Cheers

The 49G doesn't have infrared so that is impossible, but the 49g+ might be able to do it. I've tested only with the 50g, and it's flaky. Range is very poor (compared to the 48) and printing is unreliable, though.

(10-07-2021 07:44 AM)Martin Hepperle Wrote:  Dear All,

you can find a list of calculators compatible with the RedEye protocol in my PDF document at
https://www.mh-aerotools.de/hp/red-eye/index.htm.
Note also that the 50g and similar calculators have a relatively weak IR signal, compared to the 48G, thus a low range of one or two inches only.

Martin