I have also been dabbling in this direction. I am using a Radio Shack reciever and a Radio Shack 6 in 1 remote. The rest of the hardware is the picbook.com board with a 18F452. I have just got to the point where I am looking to provide a stable signal source. Do you know if the modulated 38khz is too high for a .wav file from the PC? It would save building another circuit. John Ferrell 6241 Phillippi Rd Julian NC 27283 Phone: (336)685-9606 johnferrell@earthlink.net Dixie Competition Products NSRCA 479 AMA 4190 W8CCW "My Competition is Not My Enemy" ----- Original Message ----- From: "Picdude" To: Sent: Wednesday, July 30, 2003 5:27 PM Subject: Re: [PIC]: Getting into IR. Gee. What an anticlimactic solution... I got the IR-receiver samples (Vishay TSOP3848) in recently, and hooked one up today. 2 power lines, and the output to an oscilloscope. First thing I noticed was a lot of jumpy lines, which adding some bypass caps (on the breadboard) did not solve. However, disabling the other 2 PIC circuits running on the board eliminated this noise completely. So I point my TV remote at it, and all I got was nice clean square wave signals. Sweet! I noticed that the further away the remote, the more erratic the waveform, but this is not a concern for me, as my remote will be only a few feet away from the receiver. All I gotta do now is design/build a 38khz-carrier-wave circuit with some different encodings from a few buttons. A PIC 12F629 should work well for this, and should be fairly simple. Thanks folks, -Neil. On Tuesday 01 July 2003 01:18, Picdude scribbled: > Would any of you infrared gurus be kind enough to give me some quick > pointers into getting into IR control with a PIC. I have a simple PIC > circuit here for example, that has 2 input pushbuttons, and I'd like to > change that to a simple IR control, with the 2 buttons on the IR > transmitter (I'm thinking key-fob). > > Web searching has mostly netted me a bunch of specialized devices for > dealing with commercial remote-control standards, which I don't really care > for. I'm thinking that I should be able to read an infrared photo-diode > directly with a PIC a/d and use my own protocol (each button signals with a > different frequency or pulse-width perhaps). > > Any ideas if I can achieve this? > > Thanks, > -Neil. -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu