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 Forum index » DIY Hardware and Software » Les Hall's Projects including eChucK
wireLes Breadboards
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CreatorLes



Joined: Oct 05, 2014
Posts: 84
Location: San Antonio TX USA

PostPosted: Mon Apr 20, 2015 5:12 am    Post subject: wireLes Breadboards
Subject description: breadboards without the wires, 3D printed in any shape
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This morning I was imagining what I could do chip-wise for my electro-music friends and I came up with an interesting idea - wireLes breadboards! These are breadboards 3D printed with no wires. So how do they work?

The holes that the chip's legs go into are intentionally designed to have enough room for a chip lead AND a wire! this is very low cost because it eliminates connecting mechanisms altogether. It is also solderable if you are careful enough not to melt the plastic (or even if you do a little bit).

Aha! you say - but what about multiple wires on a single pin? I'm thinking of a post or additional hole system for that, give me a little time, I just thunk this up a minute ago! In the mean time check out the images and let me know what you think!

Les


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CreatorLes



Joined: Oct 05, 2014
Posts: 84
Location: San Antonio TX USA

PostPosted: Mon Apr 20, 2015 6:49 am    Post subject: Reply with quote  Mark this post and the followings unread

Here is an example chip with two wires inserted - nice!

Les


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mosc
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PostPosted: Mon Apr 20, 2015 10:40 am    Post subject: Reply with quote  Mark this post and the followings unread

I'm wondering, is it possible to print metal with these printers?
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CreatorLes



Joined: Oct 05, 2014
Posts: 84
Location: San Antonio TX USA

PostPosted: Mon Apr 20, 2015 11:19 am    Post subject: Reply with quote  Mark this post and the followings unread

I have two ways to print conductors, but they are very limited. Metal can be printed as a powder that is a small portion of the printing filament. You can then use sandpaper and other abrasives on the printed object to expose the metal and treat it somehow.

I bought some "Tinnit" which is a tinning solution that you buy as two powders. You mix the two powders in warm water and drop a circuit board into it and it "tins" the surface of the copper for you. Well, it tins 10 microns in size so I did a calculation once and reasoned that if I were to get some filament with copper in it, print s circuit board, sand it, then use the Tinnit, it might make a conductor. The result would be fragile so you could solder it to make it more sturdy. That's one possibility that I have-not tried.

Another is to print with carbon fiber PLA. Just like you can get filament with metal powder in it, you can get filament with Carbon fiber chopped up and put into the filament. SOME brands of carbon fiber filament are conductive with a conductivity around 1200 Ohms per centimeter squared. This is a huge conductivity so think 100's ok K and Megs with this stuff. It is probably suitable for CMOS and therefore Lunettas, so I'd like to experiment with it.

Just let me know if you have any ideas along these lines, I'll be happy to print test structures and whatnot for you free of charge (well, plus shipping if you want them mailed to you).

Les
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