There are still lots of pogo pin information from different source which helps understanding the fundamental of this type of application. And here is information from a user who actually used pogo pin technologies: http://www.edaboard.com/ftopic339400.html#1180896 Funny N. Au Group Electronics, http://www.AuElectronics.com http://www.AuElectronics.com/products http://augroups.blogspot.com/ ________________________________ From: Olin Lathrop To: Microcontroller discussion list - Public. Sent: Saturday, August 22, 2009 4:00:11 PM Subject: Re: [EE] Pogo pin programming for PIC mcu. John Ferrell wrote: > WOW! Not only are we off topic here, we are in the wrong forum. But apparently not for the reason you think. This should have been [AD] in the first place since the OP is trying to sell these things as I understand it. I still don't see the point to these devices, however. They look like a answer to a question nobody asked. If you're doing real volume production, you're going to make a jig with pogo pins mounted on it that holds or at least aligns the board. If you're doing low volume or individual units one off by hand, then a pogo pin header looks like more trouble than it's worth. For that application you want pins that go thru the board so that the inevitable small hand motions won't mess up allignment. Once the pins are thru, you only need to hold some sideways force on the header without thinking or actively trying to keep your hand from wiggling to keep the header aligned. This pogo pin thing looks harder to use than the traditional method, so it's pointless except perhaps in some niche cases. Another issue I have with this jig is the choice of heads on the pogo pins. Anyone that's designed a lot of production jigs with pogo pins knows that you want them to dig into the metal just a bit. The normal pin comes to a point and is intended to hit a pad without a hole in it. You try to stay away from having pogo pins hit pads with holes, but when you have to you use a special tip that looks sortof like a arrow with sharp ridges running back from the point. Hopefully at least a couple of the ridges will dig into the metal at the corner between the via and the pad. These rounded tips look like a really bad idea unless perhaps they are only used when the copper is gold plated, in other words when there is no chance of a oxide layer that must be punched thru. So in short, a simple pin header is easier to use, works better, far cheaper, much more widely available, and longer lasting. ******************************************************************** Embed Inc, LittletonMassachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. -- 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