I recently got my hands on some miniature DIP relays, and would like to prototype a circuit with them on a solderless breadboard. Unfortunately, these relays have standard 100 mil pin spacing, but 200 mil between rows, rather than the more usual 300 mil. Obviously I can't just put them in at a right angle... is any adapter available to deal with this? Or any cute tricks?
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2 Answers
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Best bet is usually some DIY if you have not got too many.
Use 200 mil centre sockets if available or socket strips,
or cut a socket in two and solder two strips onto a piece of veroboard/vector board/whatever you call board with copper strips with holes in it.
Solder socket to board and solder a row of pins through board outside socket so they have (probably) 400 centres which will allow plugging into a standard breadboard.
Something like below but with your two rows of socket pins in the centre and with pins to breadboard bottom soldered
You can buy pins suited to this - and I have used plated brass dressmakers pins in days of yore. The plated brass pins have about 3 million% better solderability than non-brass pins that I have tried, even though the brass is under the plating.
answered Feb 15, 2012 at 11:02
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Solder wires to the relay pins and stick the other ends of the wires into the breadboard. After all, it's a breadboard, meaning it's for one-off testing. Geesh, sometimes people get so hung up in the process they forget the original intent.
answered Feb 15, 2012 at 13:48
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\$\begingroup\$ Aye. That works, but it do rather muck up the relays for socketed use thereafter :-). \$\endgroup\$– Russell McMahon ♦Commented Feb 15, 2012 at 19:05
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\$\begingroup\$ If these relays fit into sockets, then you can solder wires to a spare socket instead of the relay. In any case, this is only a 1 or 2 minute problem. \$\endgroup\$ Commented Feb 15, 2012 at 20:52