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Wonderboard Solderless Circuit Cards

shabaz

I was browsing through an old issue of Wireless World (really old - 1978), and saw this advert:

image

It's not very clear how it works, although if you look at the diagram at the very bottom of the photo, to me it appears like the elastomer is like a thin rod poked through the hole, and perhaps the contacts are pushed around it...or maybe it is a sheet of elastomer with small holes in it, and it is glued onto the PCB, because it says 4mm on the diagram, and a PCB would usually be much thinner.

Anyway, it looked interesting!

 

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  • Interesting discovery, thanks for sharing. I wish I had a speedwire board just as a collectors item Stuck out tonguehttps://en.wikipedia.org/wiki/Speedwire  

    This was the best photo I could find after a quick search

    image

    https://docs.rs-online.com/e9b7/0900766b800270c2.pdf 

  • in reply to scottiebabe

    Nice!
    It looks like IDC style pins like on the rear of phone jacks..

    If you could find a source for the metal contacts in IDC ribbon cable sockets, then those might work : )

    I really like Eurocard, I wish it was cheaper and more popular.
    A source for single-slot or double-slot+backplane enclosures would be nice too, but I can imagine those are not cheap.

    It's the perfect size for prototypes.. maybe even a half card or 2/3 option would be great.
    One thing I wanted to make (have not got around to it yet) is a Pi Pico board with just the Pico on it (and a few ancillary bits to make it easy to use, like power connector, space for voltage regulator etc, and a load of perfboard area, perhaps Eurocard size. It's fast become quite a popular microcontroller board for me, because it's in-stock : ) also easy to code with.

  • in reply to shabaz

    Yes exactly, and the pen just had a spool of 30 awg Kynar wire on top.

     image 

    Yes the eurocard was definitely large enough to contain an entire project on one card. I find the inexpensive 5cm x 7cm perfboards are often too small, but they are soo cheap lol.

    I :heart the pico, it so easy to get a project started in micropython, and if you really do need performance you can always code in c if you want. For example I just wanted to blink an LED every 30 s, it was too easy to just grab a pi pico and write a few lines of python.

     image

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  • in reply to shabaz

    Yes exactly, and the pen just had a spool of 30 awg Kynar wire on top.

     image 

    Yes the eurocard was definitely large enough to contain an entire project on one card. I find the inexpensive 5cm x 7cm perfboards are often too small, but they are soo cheap lol.

    I :heart the pico, it so easy to get a project started in micropython, and if you really do need performance you can always code in c if you want. For example I just wanted to blink an LED every 30 s, it was too easy to just grab a pi pico and write a few lines of python.

     image

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