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Topic:
Discrete codes for Hitachi PJ-TX100 projector?
This thread has 7 replies. Displaying all posts.
Post 1 made on Sunday August 8, 2004 at 10:04
Kristoffer
Long Time Member
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I need discrete on and off codes for the Hitachi PJ-TX100 projector. Haven't been able to find any ...

Kristoffer

Kristoffer
Post 2 made on Sunday August 8, 2004 at 19:40
jarmstrong
Founding Member
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1,780
Learn the power toggle and post the Pronto hex. I'll see if it matches any other Hitachi projector IR commands.

I would also contact Hitachi. They post the IR commands for the RPTV's and in many cases projector manufacturer's will provide the IR commands. I can translate what they send you into something useful. I didn't look in the manual, have you checked to see if there is any description in there. You might ask for RS-232 commands as well.

BTW, what sort of remote are you trying to program?
OP | Post 3 made on Monday August 9, 2004 at 09:52
Kristoffer
Long Time Member
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I will post the Pronto hex tonight. Thanks for your help!

I have tried to contact Hitachi here in Sweden, but they haven't answered me yet. When I tried Hitachi in US and UK, they referred me to the Swedish office.

In the manual there are lots of RS-232 commands. I didn't understand all that much of it. Can they be of help in this matter?

I'm trying to program the European version of the original Pronto (the "940").

Kristoffer
Post 4 made on Monday August 9, 2004 at 09:59
johnsfine
IR Expert
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On 08/09/04 09:52, Kristoffer said...
In the manual there are lots of RS-232 commands.
I didn't understand all that much of it. Can they
be of help in this matter?

I don't think the RS-232 commands can help you find the IR commands.

Typical projectors can be controlled more easily and more completely by RS-232 than by IR, but even when there are IR commands matching the function of RS-232 commands, I haven't seen any relationship that might let you deduce the IR command from the RS-232.

So knowing the RS-232 commands is only useful if you plan to control the projector with a computer.

But maybe Jon knows something about this that I missed.
OP | Post 5 made on Monday August 9, 2004 at 12:39
Kristoffer
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Okay. Here is the Pronto hex for the on/off switch anyway:

0000 006d 0022 0002 0156 00aa 0016 003f 0016 003f 0016 003f 0016 0015 0016 0015 0016 0015 0016 0015 0016 003f 0016 003f 0016 0015 0016 003f 0016 0015 0016 0015 0016 0015 0016 003f 0016 0015 0016 003f 0016 003f 0016 003f 0016 0015 0016 003f 0016 0015 0016 0015 0016 0015 0016 0015 0016 0015 0016 0015 0016 003f 0016 0015 0016 003f 0016 003f 0016 003f 0016 0617 0156 0055 0016 0e45

Kristoffer
Post 6 made on Monday August 9, 2004 at 14:15
johnsfine
IR Expert
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That matches three entries I have in that mega CML file. Those entries are labeled:

Runco / Barco Projector 943 or better
viewsonic projector pj1060
Hitachi Video Projector CP-X275

None of them include anything that looks like a discrete on or off.

You could use MakeHex to create and test all 256 possible commands for NEC1 protocol, device 135.69; But I'm not sure I'd feel safe testing unknown commands with this sort of device. You can't be sure you won't find a command to erase its firmware or its alignment of other settings that would require expert service. Please find and read a few posts on the risks of trying unknown IR commands, before deciding whether you should.
OP | Post 7 made on Wednesday August 11, 2004 at 12:18
Kristoffer
Long Time Member
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Thanks for your tip - and your warning. I don't think I will risk ruining my projector by trying different codes.

jarmstrong: Do you have anything more to add to this? :) Can you help me out? :)

Kristoffer
Post 8 made on Wednesday August 11, 2004 at 19:10
jarmstrong
Founding Member
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No unfortunately, John and I pretty much share the same data sources. I would keep after the manufacturer.

There are also some people who make IR to RS-232 converters, but IIRC they are quite expensive. If you are using a computer or have a server running all the time then you could probably use something like Girder to receive IR commands end send out RS-232.


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