Hi James, Welcome to www.sirpic.com :>) I=B4m using it for diagnose my circuits for about 3 years now. Works perfect. Just pay attetion that some palms didn=B4t accept raw IRDA, just IRCOMM. Another detail is that the clock must be very precise. I have some trouble with PICs 12F675 and 16F676 with internal oscillators, even with 1200bauds. I use simple IR leds (remote control ones) and only software. Zire Z22, the cheapest now, is the best I have used for this. Best regards, Rubens At 23:15 24/1/2008, you wrote: >That is a REALLY interesting idea... > >Bob has talked in the past about having an "unused" pin that sends out >status info all the time in some special format... > >If you send out status data in a serial stream fast enough and continuousl= y, >it should look more or less consistent when used to light the power on LED >on the widget you are making. > >For no extra cost, you get a visible status data stream. > >Of course, you can't read it with the naked eye... Other than to note that >the light goes out or comes on brighter when the uC stops running. > >Then the question is what can you use to read it? What if the light pattern >was the same as what a barcode reader would see if it was scanned over an >area? So assuming your customer has a barcode reader connected to his or h= er >keyboard (as is the case at a lot of POS terminals) then you just tell them >to go to a web page that you have set up, and then point the barcode wand >right over the power LED on your widget. Some JavaScript on the page parses >the data stream, breaks it off in chunks and sends them to you via AJAX. > >Or perhaps IRdA is the better protocol? > >What do PDA's talk in when you "beam" contacts between units? > >At worst, you send them a "visible light to RS232 adapter" which everyone >has laying around right? > >On Wed, Jan 23, 2008 at 12:05:24PM -0700, Dwayne Reid wrote: >The other neat trick I'm doing is that one of the LEDs is actually >spitting out a serial bit stream while it is lit. > > > >-- >http://www.piclist.com PIC/SX FAQ & list archive >View/change your membership options at >http://mailman.mit.edu/mailman/listinfo/piclist -- = http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist