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Need universal remote to replace projector remote control, have HEX codes
This thread has 16 replies. Displaying posts 1 through 15.
Post 1 made on Saturday April 10, 2010 at 12:55
DrNeon
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I have a PLUS U2-1130 projector that has a lamp hour counter that can only be reset via remote (I know, really stupid). Unfortunately, I don't have the remote. However, I have the remote codes: NEC format, 38kHz, custom code 18e9, and a list of hex codes. It needs discrete On/Off buttons that can be held down to produce continuous signals (ie to reset the lamp involves holding down On for 10 sec, or something like that). I was wondering what is the cheapest universal remote that I can program with these codes to reset the lamp hour counter on the projector. This is really the only thing I need the remote for, and it seems stupid to buy a remote just for this purpose, but so it goes. Any advice on something cheap that I can program to do this job? Thanks for the help!
Post 2 made on Saturday April 10, 2010 at 14:25
3FG
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The are a large number of remotes made by Universal Electronics which can shoot this protocol. You will probably have to individually program some of the buttons-- like discrete Off.

You need Setup Code TV 0603. If you have a Comcast silver or dark grey remote, most of the Atlas remotes provided by other cable carriers, Cox 7820B, Replay TV, high end Vizio, then you're good to go. Pretty much any Radio Shack remote with a model number 15-xxxx would work.

If you don't have access to any of these, you can buy a RCA RCRP05B ($20 at Walgreens or Best Buy). Also, the OneForAll URC-8820 or 10820 ($20 at Sears) will work, but with a different setup code.

Nearly all of these remotes can be bought used for very low prices on Ebay, etc.

According to an upgrade file at hifi-remote.com, the Plus U2-1130 uses custom code 1816 rather than 18E9 (24.22 rather than 24.233, in decimal). However, if the individual function numbers are the same, then setup code 0603 will control many of the functions natively.

To be sure, please post the hex codes that you need, and then we can tell you exactly how to program any of the above remotes to send those particular signals.
OP | Post 3 made on Friday April 16, 2010 at 20:12
DrNeon
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Hi 3FG, thanks for the help. To make my life more exciting/difficult, I decided to get an Arduino microcontroller and use it as a universal remote. I have code to supposedly drive NEC protocol to the IR LED, but I'm not getting any response from the projector (the LED blinks, so that's a start). I'm going to try to get a universal remote from a friend and try 0603 as you suggest, but I am curious as to where you see the custom code listed as 1816 instead of 18e9. Could you send a link to the page at hifi-remote.com, as I couldn't find where on that website they talk about U2-1130. The guys at support for the projector sent me the code list for the U2-870, which they claim is the same as the U2-1130, and the custom code is 18e9. Using either custom code, and the "on" code of 08F7, I get no response. Could be the code on the microcontroller is screwy. Could be other things. While I realize that the microcontroller technique is more prone to problems, it is also more fun :). But I'll try the 0603 as well, and see how that goes. Thanks!
OP | Post 4 made on Friday April 16, 2010 at 22:58
DrNeon
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oh, and the particular buttons I need are the on and off buttons. the lamp reset is holding down the on button for 10 sec, and so that's really what I'm looking for.
Post 5 made on Saturday April 17, 2010 at 00:36
3FG
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www.hifi-remote.com/forums/dload.php.  This file was submitted by Rob Crowe, who is a true guru of IR remotes, so it likely did correctly control a Plus U2 projector.

However, it may not be immediately apparent to you, but 0xe9 and 0x16 are complements of each other--they add up to 0xFF.  That is significant in this context.  The original NEC protocol was designed to provide an 8 bit custom (device) code, and an 8 bit function code.  But 16 bits were allocated to each, and the second 8 bits of both custom and function numbers are the complements of the first 8 bits.   Later, as companies needed more device number space, they began to use all 16 bits of the custom code, and no longer obeyed the complement rule. 

There's more.  IR is a serial protocol, and there is no real standardization of which signal is a 0 and which is a 1.  When experimenting with IR signals, it is reasonable to try the complement of every 8 bit number.

Still more:  A serial protocol can send the least significant bit first or MSB first.  So let's take Discrete Off, function number 20 decimal (0x14).  The necessary input to your program may be 18E9 (custom) + 14EB (function) or E7E9 + EB14 or......

Function number 20 decimal (14EB) could be represented by D728, which is bit reversed order, or 28D7 (bit reversed and complemented).

The numbering convention is the same for UEI remotes and Pronto Hex formats.  But it is mostly arbitrary, and your program and Plus projector documentation may treat it differerently.

Discrete On is function number 8 (or 0x10--bit reversed, or 0xF7--complement, or 0xEF complement, bit reversed)
Off is function number 20 -- 0x14  (or 0x28 or 0xEB or 0xD7
Post 6 made on Friday August 27, 2010 at 01:29
mbowns
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I have a U2-870 PLUS projector with a message on the screen saying Lamp Hours: 1005 and won't go away and I too wanted to know how to remove it from the screen.

I found this thread which helped me remove the message and I wanted to share my adventure. I saw the post on using the Comcast Remote but found the one I had is a Universal "Digital" Remote (the latest one for the digital boxes) which uses 6 digits instead of the 4 digits (Solution: TV Code 0603), so that was not going to work.

I thought I might of had an older version but after looking around I instead found my old Logitech 880 universal remote. I charged the batteries and downloaded the latest software from their website and found they offered a Projector Category and in there was my PLUS model. "Hooray" I said. I could now turn on and off the projector. So now the solution says to hold the power button to 10 Seconds and the message will reset the counter and disappear. Well this Logitech remote will only pulse for 1 seconds and then stop even though I'm holding down the power button. "Crap" I said. I tried to press the button as fast as i can for 10seconds but that did not work either.

After an hour I remember I came across another universal remote with learning capabilities. I taught the 2nd universal remote the ON/OFF button from the Logitech and tried the 10 seconds solution with the 2nd remote. This remote too only pulsed for 1-2 seconds; no good.

Then I had an epiphany, a brilliant idea to solve my problem. Like a western gun slinger but with two remotes; one in each hand, I pushed the power button alternating each hand while pointing at the projector and Bingo the message reset the counter from 1005hours to 0 hours and then disappeared. That's my story. Duration 4 hours.
Post 7 made on Friday March 4, 2011 at 19:11
thecanuck
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Bought the RCA universal remote and used code 0603. Can get the projector to turn off but cannot find the button to use to turn it on. Any thoughts/ideas on what I should do next? Get a JP1 cable and use the above referenced file for discrete on/off?
Post 8 made on Friday March 4, 2011 at 20:02
3FG
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Let's program another button to send Power On. The Live button is nearby, and I'll use that as an example, but most other buttons will work.  The Power button and the device mode buttons can not be re-assigned.

We're going to assign an EFC to the Live button, and it will send the Power On IR signal. Start by tapping the TV device button.
1) Press Setup until the TV button blinks twice
2) Enter 994 (2 blinks)
3) Tap Setup
4) Enter 00053 (this is the EFC for Power On)
5) Tap the Live button
The remote should blink twice to indicate the entry was accepted.

Now pressing Live should send Power On.

We can use this approach to assign any function to a button, so if you want to adjust keystone, magnify, or access the menus, etc. follow the above procedure using
POWER ON00053
POWER OFF00116
RGB00180
VIDEO00187
S-VIDEO00174
MENU00166
LEFT00232
RIGHT00228
UP00230
DOWN00234
CANCEL00216
ENTER00122
POINTER00214
MUTE00170
FREEZE00036
MAGNIFY+00065
MAGNIFY-00063
KEYSTONE+00043
KEYSTONE-00213
VOLUME+00037
VOLUME-00041
Post 9 made on Friday March 4, 2011 at 21:37
thecanuck
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Thanks... Can now get it to turn on and off... So I have the problem of that resolved - still having trouble getting it to reset. Is the RCA remote a digital pulse as the other poster mentioned? I am not familiar with remote technology so any help would be appreciated...
Post 10 made on Sunday March 6, 2011 at 00:11
3FG
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I believe that the remote is programmed to send three fames of the NEC1 protocol. Each frame takes about 107 milliSeconds, so the repeats last for about 0.3 seconds. The remote sends additional signals as long as you hold down the button, but there is a small gap every 0.3 seconds. Maybe your projector really wants 100 repeated frames with no breaks in between.

I think it is possible to change the behavior of the remote with a JP1 cable, so that it sends 100 repeats. I don't know for sure, so I'll ask at hifi-remote.com, and perhaps some real experts will weigh in.

ETA: You can check to see if the IR is being transmitted continuously by using a digital camera viewfinder (I use a cell phome) to look at the emitting LEDs.

Last edited by 3FG on March 6, 2011 11:47.
Post 11 made on Thursday March 10, 2011 at 02:07
3FG
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OK, I've looked into this some more. Ordinarily the remote will repeat without interruption for many seconds. However, assigning an EFC to a button seems to cause repeats, and unfortunately I don't see a way to send discrete On without breaks except by using a JP1.3 flash cable to load in an upgrade.

Of course, I can't be sure that even an uninterrupted stream of iR will work for you. A USB based cable cost $29, and it is trivial to use RemoteMaster to upload the upgrade.
Post 12 made on Friday August 5, 2011 at 22:23
bboy4life
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hello i have the same problem i also dont know too much about this stuff but if you could can you email me the steps and what code to put i what at aman_detroit@hotmail.com thank you
Post 13 made on Monday August 8, 2011 at 22:59
bboy4life
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can you send me all of the info?
Post 14 made on Monday August 8, 2011 at 23:59
3FG
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The only info we have is posted here. But notice that the OP found that it didn't reset the lamp.
Post 15 made on Thursday August 11, 2011 at 13:07
bboy4life
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i called plus and they said they had success with a harmony 300 i will try that
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