Post by thread:[PIC] Spring-loaded contacts for ICSP

Does there exist an off-the-shelf in-line (or other) 5-pin spring- loaded connector for ICSP ? For pushing on to PCB pads. I remember at least one person mentioning something but can't find anything in catalogues for local hardware outlets. If push comes to shove I could make one, or arrange for ICSP terminals to be on the edge of the board and use an edge connector (not always convenient physically) TIA ===================================== Veni vidi pici - I came I saw I programmed

Or, how about a "dip clip" kinda thing that would clip onto an SMT PIC. Our ICSP cable would just be wired to the appropriate pins. No extra real estate! Harold > Does there exist an off-the-shelf in-line (or other) 5-pin spring- > loaded connector for ICSP ? For pushing on to PCB pads. I > remember at least one person mentioning something but can't find > anything in catalogues for local hardware outlets. If push comes to > shove I could make one, or arrange for ICSP terminals to be on > the edge of the board and use an edge connector (not always > convenient physically) > -- FCC Rules Updated Daily at http://www.hallikainen.com

Jinx wrote: >Does there exist an off-the-shelf in-line (or other) 5-pin spring- >loaded connector for ICSP ? For pushing on to PCB pads. I >remember at least one person mentioning something but can't find >anything in catalogues for local hardware outlets. If push comes to >shove I could make one, or arrange for ICSP terminals to be on >the edge of the board and use an edge connector (not always >convenient physically) > >TIA > >===================================== >Veni vidi pici - I came I saw I programmed > > > > > > They are refered to as "POGO PINS" <<< Google this... My favorite way of using them is to solder the pin holders into an FR4 card that can hold them tightly together. Then attach a cable back to the programmer. Strike all the pins across the PADS of the PCB having a PIC to be programmed. It works great. If you use chisel-tipped pins, the pad hole will act as a guide. --Bob -- Note: To protect our network, attachments must be sent to spam_OUTattachTakeThisOuTengineer.cotse.net . 1-866-263-5745 USA/Canada http://beam.to/azengineer

> Does there exist an off-the-shelf in-line (or other) 5-pin spring- > loaded connector for ICSP ? For pushing on to PCB pads. I > remember at least one person mentioning something but can't find > anything in catalogues for local hardware outlets. If push comes to > shove I could make one, or arrange for ICSP terminals to be on > the edge of the board and use an edge connector (not always > convenient physically) Try Farnell 143-742 and 143-743 single spring loaded contacts. Maybe you could solder 5 of them to a 0.1" header, but there wouldn't be a lot of room between contacts. -- Brent Brown, Electronic Design Solutions 16 English Street, Hamilton, New Zealand Ph/fax: +64 7 849 0069 Mobile/txt: 025 334 069 eMail: .....brent.brownKILLspam@spam@clear.net.nz

> Try Farnell 143-742 and 143-743 single spring loaded contacts. Maybe > you > could solder 5 of them to a 0.1" header, but there wouldn't be a lot > of room > between contacts. You could stagger them in two rows to get more spacing. This type of pin is sold for "bed of nails" testers. I think Utilux may have them. I can give you (Jinx) enough for a single interface if you want to try them. RM

On Wed, 02 Feb 2005 12:48:18 +1300, you wrote: >> Does there exist an off-the-shelf in-line (or other) 5-pin spring- >> loaded connector for ICSP ? For pushing on to PCB pads. I >> remember at least one person mentioning something but can't find >> anything in catalogues for local hardware outlets. If push comes to >> shove I could make one, or arrange for ICSP terminals to be on >> the edge of the board and use an edge connector (not always >> convenient physically) Coda Systems http://www.coda-systems.co.uk/ do every type of spring contact from teeny high-density ones to 250 AMP monsters...!

> Thanks for pointers. I was thinking those contacts for smallish > downloads/uploads and a hands-off 5-way pin header + socket > for bigger transfers (eg 18Fs) I know someone who does medium volume programming using a handheld header strip pressed into position against holed pads on the PCB. Not elegant but it works for him. PCB cost is just the pads. Having holes therein to centre the header no doubt helps. RM

Russell! That was my idea! been doing it before the flash parts even arrived... Exactly. <G> --Bob Russell McMahon wrote: {Quote hidden}>> Thanks for pointers. I was thinking those contacts for smallish >> downloads/uploads and a hands-off 5-way pin header + socket >> for bigger transfers (eg 18Fs) > > > I know someone who does medium volume programming using a handheld > header strip pressed into position against holed pads on the PCB. Not > elegant but it works for him. PCB cost is just the pads. Having holes > therein to centre the header no doubt helps. > > > > RM > -- Note: To protect our network, attachments must be sent to attachKILLspamengineer.cotse.net . 1-866-263-5745 USA/Canada http://beam.to/azengineer

> I know someone who does medium volume programming using a > handheld header strip pressed into position against holed pads on > the PCB. Not elegant but it works for him. PCB cost is just the pads. > Having holes therein to centre the header no doubt helps. I'd thought of that but worried about pins slipping in the plastic and would have used epoxy to prevent it. But still feel better about a spring contact assembly. After all, you need make only one so might as well make it dependable. I stripped some wipers out of a PC ISA socket ages ago to make slip-ring contacts for unusual switch mechanisms and they're still going strong

I'd forgotten that mill-max sells spring loaded arrays, on 0.1" ctrs, smd pad on the back size. The probes are rounded, so are designed to strike a gold-plated pad ( soft inert metal, rhodium, platinum is OK too). Solder coated pad MIGHT work. Digikey has 'em. --Bob Jinx wrote: {Quote hidden}>>I know someone who does medium volume programming using a >>handheld header strip pressed into position against holed pads on >>the PCB. Not elegant but it works for him. PCB cost is just the pads. >>Having holes therein to centre the header no doubt helps. >> >> > >I'd thought of that but worried about pins slipping in the plastic >and would have used epoxy to prevent it. But still feel better about >a spring contact assembly. After all, you need make only one so >might as well make it dependable. I stripped some wipers out of a >PC ISA socket ages ago to make slip-ring contacts for unusual >switch mechanisms and they're still going strong > > > -- Note: To protect our network, attachments must be sent to .....attachKILLspam.....engineer.cotse.net . 1-866-263-5745 USA/Canada http://beam.to/azengineer

>Does there exist an off-the-shelf in-line (or other) 5-pin spring- >loaded connector for ICSP ? For pushing on to PCB pads. I You could always cut a PCB thickness slot in an RJ12 socket, so the springs in there could contact a PCB. Would make a reasonable fine pitch connector for a handful of contacts.

Neat idea! -----Original Message----- From: EraseMEpiclist-bouncesspam_OUTTakeThisOuTmit.edu [piclist-bouncesspam_OUTmit.edu] On Behalf Of Alan B. Pearce Sent: Wednesday, February 02, 2005 2:46 AM To: Microcontroller discussion list - Public. Subject: Re: [PIC] Spring-loaded contacts for ICSP >Does there exist an off-the-shelf in-line (or other) 5-pin spring- >loaded connector for ICSP ? For pushing on to PCB pads. I You could always cut a PCB thickness slot in an RJ12 socket, so the springs in there could contact a PCB. Would make a reasonable fine pitch connector for a handful of contacts.