RS232 and HP49+ or HP50
Marten
therefore again this question:
Is there now any suitable hardware solution available to connect to
standard RS232 hardware ?
ger...@cox.net
I think one of these might do the trick:
http://www.bb-elec.com/product_family.asp?FamilyId=19&Trail=3&TrailType=Main
You still have to obtain/create the mini-b to 9-pin RS232 cable, etc...
I've been waiting for someone to actually do this, then post. Right
now, I only have the 49G+, and I don't want to upgrade to the 50G
unless the serial port is realizable.
I also tried to use the IR port to implement a serial port. In theory,
you need an ir/serial converter. I bought one on eBay, but it didn't
work with the 49G+. The unit may be defective, or not compatible with
the 49G+.
The short answer is be persistent. If you succeed, please post.
Veli-Pekka Nousiainen
Let's wait and see - meanwhile you should phone HP support and ask
so that they will get the need recorded
<ger...@cox.net> wrote in message
news:1167747843.4...@s34g2000cwa.googlegroups.com...
blueel...@hotmail.com
I'm hoping to spend some time this week writing some code and creating
some simple hardware to interface the HP50G to a Fluke 199 O'Scope and
a Fluke 189 Multimeter. I'm using a store-bought USB cable and a
USB-A to Mini 4-DIN, which I will solder wires to connect to the DB9
mate.
First, I have to register for classes at the university :)
More to come,
Scott
jeff
connector.
www.datapro.net/products/1597.html
Maybe this coupled with the earlier referenced convertor will begin to
solve the non-standard RS232 problem. Funny, I thought good
engineering solved problems, rather than create new problems. Maybe
I'm just old school.
Jeff
barro
No, ...err...I mean,... it depends. What you mean by solution?
There is no cable implementation available on the store shelf today
which can "plug and play". HP is too lazy or too cheap to provide such
a solution.
Now, there is no hardware solution.
The next question is does a concept solution exist? Answer, maybe. If
HP provides a spec sheet on the calculator side of the RS-232 to HP50
"interface, then third parties including end-users, can roll their own
using discrete components or IC's such as the MAX-232.
This problem has been addressed by other companies such as Kenwood and
ICOM for data flow between radios and RS-232 comm ports. ICOM wanted
$150 for the interface, but released the specifications so that third
parties could build their own for reasonable cost (say $20).
Once a standard is made available (probably already for HP device),
then third parties can begin marketing interfaces if financially
feasible. If not, may not happen. Survey industry needs the thing.
Others maybe not as there is USB. TW is best hope or get the
manufacturer of the survey instrument (Leica, Topcon) to participate.
Here are some links which descibe the interface circuitry. Last time I
posted them I got now reponse.
Did I mention that Texas Instruments makes the MAX-232? Never mind!
http://www.plicht.de/ekki/civ/civ-sch2.html
http://www.arcelect.com/rs232.htm
John B
Veli-Pekka Nousiainen
What about the 48GII serial cable?
Will it work on the 50G?
(Considering one has to provide power from the PC side)
--
Veli Pekka -
"barro" <bar...@comcast.net> wrote in message
news:1167848541.0...@s34g2000cwa.googlegroups.com...
John
Here is a shameless plug for our product which will do exactly what you
want.
John Evers
Precision Surveying Solutions
Veli-Pekka Nousiainen
news:1167868744.4...@i80g2000cwc.googlegroups.com...
Great!
How much is your Bluetooth solution only?
blueel...@hotmail.com
wrote:
I have a similar cable that I'm using. Instead of cutting it, though,
I bought a coupler that attaches to the USB-A end and converts it to
the MINI 4-DIN. I haven't been able to whip up a MAX232 circuit yet;
the puppies are just too damned needy and my headphone amplifier
needed a further gain adjustment to account for the new MP3 player (it
drives a 300 ohm load at 150mW using a 3W DC-DC converter, so it's
portable).
BTW, does anyone know if the "battery" pin on the "RS232" line of the
calculator is only connected to the battery proper, or, in the absence
of batteries, will it receive power from the USB port?
Happy New Year,
Scott
TW
Lets see. . . about 150 for the case, 150 for the circuit board inside
it, and another 100 for the bluetooth adapter.
TW
Dueño de Monte
TW ha escrito:
Nice !
I just have to consider the prices to be in my local currency (Costa
Rican Colones CRC) and I will order 6 of them. Am I right ?
Daniel
p.s.:The official exchange rate is CRC 515 for one USD.
TW
> Rican Colones CRC) and I will order 6 of them. Am I right ?
This is for your tree marking stuff, right?
I'd be interested in seeing how that works sometime if you don't mind.
We are possibly looking to make a package for dedicated forestry stuff
and could possibly work with you.
We are working on a firmware update to the communication circuit board
that will handle streaming NMEA data. Hopefully it will be done within
a week or so.
TW
TW
> Let's wait and see - meanwhile you should phone HP support and ask
> so that they will get the need recorded
I'd just like to say that I don't have any sort of special information
about the calculator. I am also not opposed to someone else doing it
first. I'd buy from them. :-)
We are still planning on doing the cable, but I'd like to do it
correctly and nice. Both of those take some $$$. Since we've now
started selling surveying boxes we should be able to start seriously
pursuing a wire soon.
Meanwhile, if there are people wanting to get a serial/bluetooth
connection to the 50g and environmental case we do sell those
separately. They aren't intended to be for casual users, but if you
have a specific application requiring that capability. . .
TW
Dueño de Monte
TW ha escrito:
> This is for your tree marking stuff, right?
Yes. With the Tokyo Protocol and the warming climate effect, trees are
growing in tropical countries like never, and we suppose to sell the
carbon capture "CERTIFIED" to Japan and Europe. I need this equipment
as soon as possible to do so.
> I'd be interested in seeing how that works sometime if you don't mind.
> We are possibly looking to make a package for dedicated forestry stuff
> and could possibly work with you.
I´ll be glad to help you in any way, just let me know how.
Please forgive me if sometime I´ll take some time to answer, its
because I am in the jungle, and there is still no way to get internet
there.
> We are working on a firmware update to the communication circuit board
> that will handle streaming NMEA data. Hopefully it will be done within
> a week or so.
I´ll be waiting, for the news.
> TW / Daniel
blueel...@hotmail.com
Found an interesting site that may help us DIY's:
http://www.superdroidrobots.com/shop/category.asp?catid=41
It's a 3.3V/5V TTL to RS232 converter that's built-into the cable
head. Requires external power, which can be provided by the battery
output of the HP50G (perhaps with a diode to limit the 6V to 5.3V).
Should solder directly to a clipped store-bought USB cable.
--Scott
Larry C
You may also want to have a look at a parasitically powered Bluetooth
Serial adapter on the RS232 port of you device. Then you can connect
from a PC, PDA, or Mac via Bluetooth wireless. Blueconsole manufacters
one:
www.blueconsole.com
Veli-Pekka Nousiainen
news:t75tp214qgato7ede...@4ax.com...
but wasn't that the "problem" with the 48GII's serial port:
external power neede from PC => no good as a host/controller
on as a slave/client of a PC, (which then provides the power)
Anyway a hardware hack is needed...
Marten
John schrieb:
> Marten wrote:
> > I've searched in this group, but did not find any working solution -
> > therefore again this question:
> >
> > Is there now any suitable hardware solution available to connect to
> > standard RS232 hardware ?
>
> Here is a shameless plug for our product which will do exactly what you
> want.
>
Cool, but - errrr - its also a matter of price .... and I just would
like to have that cable for around € 25.
Marten