Magic IR

Comments

• Nick McClick Posts: 1,003

  2010-10-29 11:55 edited 2010-10-29 11:55

  You'll often get a different code length because the remote may repeat the command or part of the command.
  
  Timing values will change slightly, too.
  
  One thing that's odd is you have 127 transitions - although there's space for that many, the code shouldn't need 127 transitions.
  
  Try re-recording the IR command, but this time just quickly press the button. Is the transition count shorter?
• Ragtop Posts: 406

  2010-10-29 12:25 edited 2010-10-29 12:25

  It is working after adding a variable in the DAT section for length.
  
  I rewrote the Parallax Serial Terminal output for an easier cut and paste.
  
  The unlimited power your code provides is intoxicating. Oh, the possibilities.
  

  CON              
   _clkmode        = xtal1 + pll16x
   _xinfreq        = 5_000_000
   
  OBJ
   magicir : "magicir_010"
   DEBUG   : "Parallax Serial Terminal"
  VAR
  LONG code1[128], code1len, i,x
  PUB main
  
  magicir.storecode(0, @code1, @code1len)
   DEBUG.start(250000)
   waitcnt(clkfreq*8  + cnt)
  
   x:=1
   debug.str(string("Code1len is ")) 
   debug.dec(code1len)
   debug.str(string(13))
   debug.str(string("DAT"))
   debug.str(string(13))
   debug.str(string("   Play      long "))
   repeat i from 0 to code1len
       x++
       if x == 10
          debug.dec(code1[i])
          debug.str(string(13))
          debug.str(string("             long ")) 
          x:=1
       else
          debug.dec(code1[i])
          debug.str(string(","))
   debug.str(string(13))     
  
   repeat
     'magicir.playcode(4,@play,@playlen)
     magicir.playcode(4,@code1,@code1len)
     waitcnt(clkfreq*5 + cnt)
  
  DAT
     Volup     long 85913,199949,245796,359837,405668,519373,565208,599133,644640
               long 678893,724411,758333,803851,837773,883293,917213,963070,996989
               long 1042509,1076445,1121951,1155869,1201382,1315405,1361250,1474941,1520782
               long 1634813,1680656,1794349,1840196,1954205,2000058,2113069,2158917,6188605
               long 6274514,6388525,6434381,6548077,6593917,6707949,6753788,6787709,6833231
               long 6867165,6912672,6946941,6992447,7026381,7071887,7105821,7151325,7185245
               long 7230763,7265021,7310540,7344461,7389979,7504013,7549859,7663549,7709401
               long 7823437,7868945,7982989,8028832,8142525,8188371,8301725,8347565
  
  
     VPlen     long 70
  
     Play      long 85625,199733,245607,359381,405258,519029,564909,599189,644394
               long 758501,804377,918149,964023,997973,1043509,1077461,1122995,1156949
               long 1202482,1236773,1281970,1316245,1361453,1475557,1521431,1555381,1600928
               long 1634869,1680419,1794197,1840071,1953845,1999716,2112805,2158685,6188325
               long 6274284,6388373,6434254,6548005,6593876,6707637,6753518,6787797,6833010
               long 6946789,6992659,7106421,7152298,7186581,7232118,7266069,7311605,7345557
               long 7391100,7425045,7470589,7504869,7550068,7663829,7709712,7744005,7789202
               long 7823477,7869027,7982805,8028675,8142437,8188314,8301413,8347283,12378245
               long 12463869,12577957,12623836,12737589,12783800,12897573,12943442,12977397,13022931
               long 13136693,13182567,13296341,13342214,13376165,13421695,13455973,13501179,13535461
               long 13581002,13614949,13660481,13694421,13739962,13853733,13899605,13933557,13979095
               long 14013381,14058578,14172341,14218553,14332325,14378202,14491301,14537170
  
     Playlen   long 106
  
• Nick McClick Posts: 1,003

  2010-10-29 13:16 edited 2010-10-29 13:16

  Glad it's working - the lengths look much better there.
• bdickens Posts: 110

  2010-10-29 13:22 edited 2010-10-29 13:22

  We should get a propeller based universal remote with raymans screen, your IR and the propeller mod,
• eod_punk Posts: 146

  2010-10-29 13:35 edited 2010-10-29 13:35

  I'm working my way to a universal remote slowly, I have a thread over at Savage Circuits about my remote project. Currently I'm buttoning up things on my Networked remote, but plan on adding a touch screen remote with some xbee's to my current setup.
  
  http://www.savagecircuits.com/forums/showthread.php?169-Networked-Universal-Remote
• Ron Czapala Posts: 2,418

  2010-10-29 17:47 edited 2010-10-29 17:47

  What IR receiver are you using?
  The Panasonic PNA4601M uses a 36.7 kHz carrier frequency while the Vishay TSOP4838 uses 38kHz.
  
  Which frequency is used by most remotes?
  
  
  
• bazi Posts: 29

  2010-10-30 02:36 edited 2010-10-30 02:36

  It will work with a 38khz receiver, not as good as with a 36,... but it will work. The range and the angle will be smaller...
• bdickens Posts: 110

  2010-10-30 11:32 edited 2010-10-30 11:32

  For those of us without any background, what would be the best IR LED to use with the Vishay TSOP4838 ? I didn't even realize (although that should have been obvious) that they came in different frequencies.
  
  A mouser part # would be helpful if you happen to know.
  
  Thanks
• MagIO2 Posts: 2,243

  2010-10-30 15:04 edited 2010-10-30 15:04

  The TSOP is the receiver, isn't it? So, when you ask for an LED you mean the sender LED?! The sender does not come in versions with different frequencies. You simply let the propeller generate the needed frequency that matches with the receiver you have.
• bill190 Posts: 769

  2010-10-30 20:14 edited 2010-10-30 20:14

  bdickens wrote: »

  For those of us without any background, what would be the best IR LED to use with the Vishay TSOP4838 ? I didn't even realize (although that should have been obvious) that they came in different frequencies.
  
  A mouser part # would be helpful if you happen to know.
  
  Thanks

  
  I just came across this page tonight. It has 3 different IR LED's. (Interesting)...
  http://www.rentron.com/remote_control/IRLED.htm
  
  Then see "The Transmitter" at the following link. This discusses IR LED's and so forth...
  http://www.sbprojects.com/knowledge/ir/ir.htm
• bdickens Posts: 110

  2010-11-01 06:13 edited 2010-11-01 06:13

  From the specs on these devices (and I know next to nothing about hardware) I assumed that while the prop generates the on/off but the code is being carried across a beam of infrared light. I was presuming that the TSOP4838 would react "cleaner" if the sending LED matched. But in hindsight, it has to react across a broad range of devices since I doubt each manufacturer used the same LED. And I'm not sending to myself ! So yes, stupid question.
  
  BILL190 - Thanks. That was very interesting reading !
• Ragtop Posts: 406

  2010-11-01 09:30 edited 2010-11-01 09:30

  Currently wondering if maybe this code could be used to have two props communicate with each other......
• JonnyMac Posts: 9,622

  2010-11-01 09:47 edited 2010-11-01 09:47

  If you want to do standard serial comms over IR you're limited to about 2400 baud -- it's doable, though.
  
  This object:
  -- http://obex.parallax.com/objects/462/
  
  ... will let you transmit serial using an IR LED. The receive end is a standard IR receiver module.