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Anyone has remote control software for the 49G+?



#2

Thinking about buying one of these and it hit me that if I really hate it may be I can use it as a programmable remote control for TV etc...? I have a remote package that run on the 48GX very well.
For $139 it is relatively cheap for a remote control.


#3

no software able, and Irda mode is not the same as used in the 48G series.

Bye

#4

If such software existed it wouldn't do you any good; the range of the IR transmitter on the 49G+ has been crippled so that you'd have to hold it very close to the TV for it to work.


#5

I don't know about the 49+ but the 48GX has very short range IR too when they're communication with each other but when using as remote control it works at distance better than 10ft.


#6

Yes, the receiver of the 48 series is limited to short-range use only, but the transmiter has a much greater range, so it makes a good remote control. But the range of the transmitter of the 49G+ has also been reduced. Here's a link to an article from Jean-Yves Avenard in which he says, among other things:

Quote:
Also, the IR LED is seriously crippled to no more than 5cm, so unlike
the HP48 where only the receive LED was crippled having a remote with
such a short range woulb be useless IMO anyway.

#7

Can someone tell me how to find the software for a 48 remote?


#8

Just a wild guess, but you might try: http://www.hpcalc.org/search.php?query=remote&hp48=1

Regards,
James

#9

I used this software on my 48GX and it works great. It does not work as well on the 48SX though.

http://www.hpcalc.org/hp48/utils/comms/rem34bg.zip

#10

I'm surprised that JYA wrote that, and that I apparently didn't
notice at the time. I expect that he meant "SIR" instead of
"RedEye".

The 49g+ does have the capability to send in "RedEye" mode to the
82240A and 82240B printers, but, experimentally, the range is
about 5 cm, compared to 1-2 m from a 48 series.

As far as I've been able to determine, the "Serial IR" used on the
48 series isn't available on the 49g+.

The 49g+'s "IrDA" is seriously (and intentionally) crippled to 10
cm on the 49g+ to accomodate the "educational community". Cyrille
wrote that both the transmitter power and the receiver sensitivity
are low. Experimentally, 10 cm does indeed seem to be about the
maximum range that I can get between my 49g+ and IrDA/RS-232
converter.

It might be possible, using ARM programming, to
directly control the IR transmitter and detect light pulses at the
receiver in a "raw" state, but I expect that the extremely short
range would make it rather impractical to use it as a remote
control.

Of course, it might be possible to modify the hardware to increase
the range to the 1 m that's normal for an IrDA device.

Another idea is to build an "IR amplifier" that would be slipped
onto the 49g+.

Regards,
James


#11

"Another idea is to build an "IR amplifier" that would be slipped onto the 49g+."

Or to unsolder the transmitter resistor used to reduce current (I think there is one). I was actually looking at some photos of the inside of the hp and saw a bunch of SMT resistors and condensators around the IR and usb plug.

Have a nice time everybody!
Dimitri


#12

Actually, short out whatever limits the power, presumably a resistor. Or, more likely, replace it whith a lower resistance. But which one? And of course it would void any remaining warranty.

Edited: 17 Oct 2004, 2:37 a.m.


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