Album PCBs & soldering from .:madworm:.

Thermal vias

nobody@ipernity.com (.:madworm:.) — Wed, 16 Sep 2015 15:31:01 +0000

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>>674<<

nobody@ipernity.com (.:madworm:.) — Tue, 01 Jul 2014 08:32:01 +0000

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>>674<<

nobody@ipernity.com (.:madworm:.) — Tue, 01 Jul 2014 08:32:01 +0000

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Pogo-pin adapter PCB

nobody@ipernity.com (.:madworm:.) — Fri, 05 Jul 2013 20:11:15 +0000

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Pogo-pin adapter with assembly jig

nobody@ipernity.com (.:madworm:.) — Fri, 05 Jul 2013 20:11:35 +0000

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Trying to get good pin alignment

nobody@ipernity.com (.:madworm:.) — Fri, 05 Jul 2013 20:12:29 +0000

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Using the jig to assemble the pogo-pin adapter

nobody@ipernity.com (.:madworm:.) — Fri, 05 Jul 2013 20:12:40 +0000

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AVR ISP pogo-pin programming adapter

nobody@ipernity.com (.:madworm:.) — Fri, 05 Jul 2013 20:12:49 +0000

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AVR ISP pogo-pin programming adapter

nobody@ipernity.com (.:madworm:.) — Fri, 05 Jul 2013 20:12:59 +0000

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There's a tiny spring inside!

nobody@ipernity.com (.:madworm:.) — Fri, 05 Jul 2013 20:13:10 +0000

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Of course I knew that.

These things are delicate

nobody@ipernity.com (.:madworm:.) — Fri, 05 Jul 2013 20:13:19 +0000

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It broke off at a weak spot while cleaning the board a bit too vigorously. The reason for the weakness is that the brass tube was compressed in one spot (around its circumference) to keep the steel tip from slipping out. In an ideal world these pogo-pins should be mounted in such a way that the weak spot doesn't see and sideways force. Adding a sleeve might be advisable, or putting the whole thing into a suitable bore. I added a blog of solder.

A tiny spring

nobody@ipernity.com (.:madworm:.) — Fri, 05 Jul 2013 20:13:30 +0000

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This spring was part of a pogo-pin. It's diameter is about 500µm.

AVR ISP pogo-pin programming adapter

nobody@ipernity.com (.:madworm:.) — Fri, 05 Jul 2013 20:13:39 +0000

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Pogo-pin programming adapter at work

nobody@ipernity.com (.:madworm:.) — Fri, 05 Jul 2013 20:13:50 +0000

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It works rather nicely. The holes in the circuit board provide alignment of the pins.

AVR ISP pogo-pin programming adapter

nobody@ipernity.com (.:madworm:.) — Fri, 05 Jul 2013 20:14:11 +0000

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AVR ISP pogo-pin programming adapter

nobody@ipernity.com (.:madworm:.) — Fri, 05 Jul 2013 20:14:21 +0000

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Pogo-pin weak spot covered with blob of solder

nobody@ipernity.com (.:madworm:.) — Fri, 05 Jul 2013 23:18:07 +0000

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If I had a precision lathe, I would try to make a sleeve to cover the weak spot. Solder will have to do the job for now.

AVR ISP pogo-pin programming adapter

nobody@ipernity.com (.:madworm:.) — Fri, 05 Jul 2013 20:14:31 +0000

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AVR ISP pogo-pin programming adapter

nobody@ipernity.com (.:madworm:.) — Fri, 05 Jul 2013 20:14:00 +0000

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Assembly jig

nobody@ipernity.com (.:madworm:.) — Fri, 05 Jul 2013 20:12:18 +0000

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The first set of holes were of no use. After drilling I noticed that the block wasn't square enough. Depth wasn't uniform either. The 2nd set of holes did the job. It still wasn't a piece of cake, but it worked.