Ok, I see, you're right, it hurts too. I put that one in the bad idea = bin. -----Original Message----- From: pic microcontroller discussion list = [mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Jake Anderson Sent: Sunday, May 23, 2004 12:21 To: PICLIST@MITVMA.MIT.EDU Subject: Re: [PIC:] Single Row of LED's Illusion - How they do that? also wont work several reasons your ear and eye are connected so that if you turn your head your eye automatically compensates so you stay looking in the same direction = (unless you are specifically looking at somewhere else) this works up to about 10Hz so you have to shake your head faster than = that to get anything shaking your head faster than that a) isnt accurate enough to give a decent picture b) hurts c) looks really silly -----Original Message----- From: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Lindy Mayfield Sent: Sunday, May 23, 2004 8:11 PM To: PICLIST@MITVMA.MIT.EDU Subject: Re: [PIC:] Single Row of LED's Illusion - How they do that? Thanks for the info, I'll check that out. Sorry, perhaps I wasn't specific about my "idea". (-: I meant I = thought I could maybe do one where you have to look at it and shake your head NO! = over and over to read it. -----Original Message----- From: pic microcontroller discussion list = [mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Jinx Sent: Sunday, May 23, 2004 12:07 To: PICLIST@MITVMA.MIT.EDU Subject: Re: [PIC:] Single Row of LED's Illusion - How they do that? > To be more specific, I had the idea of seeing if it would work with > just a row of lights in one place and you have to move your head > to read it I don't think so, unless you have more eyes than a spider and you can select which one(s) is looking at the LEDs The effect is similar to how a dot matrix print-head makes characters with a line of pins. Where the pins struck the paper and made a mark is the record of where they were. LEDs "print heads" use the principle of persistence of vision, like a film strip or flip-book. Each frame is = a single static picture but run quickly in succession gives the impression of a dynamic display Bob Blick's Propellor Clock is a good place to start http://www.bobblick.com/techref/projects/propclock/propclock.html Google for "propellor clock" to get other examples, or eg "message wand" http://www.salient.com.au/led_MessBar.htm -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details. --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.663 / Virus Database: 426 - Release Date: 4/20/2004 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.663 / Virus Database: 426 - Release Date: 4/20/2004 -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details. --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.663 / Virus Database: 426 - Release Date: 4/20/2004 =20 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.663 / Virus Database: 426 - Release Date: 4/20/2004 =20 -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.