I ordered some new breadboards and...

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Hi,

They came with a thin metal sheet that I presume one might stick to the bottom of the board. The bottom has a large sticker so you can affix them to a board, etc. Any idea what the thin metal sheet is for?

Thanks,

Alan

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Picture please !

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Breadboards are usually like lego pieces, the metal piece secures them in place.

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Ground plane?

Letting the smoke out since 1978

 

 

 

 

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Hi,

They are very thin (0.014" or 0.355mm) squares of metal the same size as the breadboard. I could peel off the bottom sticky tape on each board and fit the metal rectangle right on it. I think they might slide around a little more which is probably why I won't, but I wondered what they were..

Thanks,

Alan

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As I said before, a typical breadboard is built like lego. 1 piece, 2 rows, on top. 1 piece, 2 rows, on bottom. In the middle is a larger rectangular piece. Generally there are 3 or more pieces. The pieces, interlock using plastic tabs, but that is not enough. The sticky tape secures a metal plate which re-enforces the structural rigidity.

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I've been wondering about those plates too, but never was so curious that I investigated.

Quote:

The sticky tape secures a metal plate which re-enforces the structural rigidity.

But the plate is of the same size as the breadboard. If a metal plate should keep two breadboard pieces together it should be the combined size, no?

.

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JohanEkdahl wrote:
I've been wondering about those plates too, but never was so curious that I investigated.

Quote:

The sticky tape secures a metal plate which re-enforces the structural rigidity.

But the plate is of the same size as the breadboard. If a metal plate should keep two breadboard pieces together it should be the combined size, no?

.

In that pic, the metal piece looks to be the same size as the bread board, which is what it should be.

The metal piece covers the top, middle, and bottom piece of the breadboard.

If you take your bread board with no metal plate, and you move the pieces in a up and down motion, you will see just how easy they will separate.

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Fascinating! Although I have had those small breadboards for several years I have nevver noticed that they are actually made up of pieces. (I've seen it on my larger boards, but they are mounted on a blue plastic bottom plate.)

Thanks for opening my eyes for the obvious.

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"Some questions have no answers."[C Baird] "There comes a point where the spoon-feeding has to stop and the independent thinking has to start." [C Lawson] "There are always ways to disagree, without being disagreeable."[E Weddington] "Words represent concepts. Use the wrong words, communicate the wrong concept." [J Morin] "Persistence only goes so far if you set yourself up for failure." [Kartman]

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Also if you look at your breadboard, you will see tabs or slots on each side, you can take several smaller breadboards and make a super big breadboard

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Can also be used for scratching my desk apart... :(

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Paddy wrote:
Quote:
Any idea what the thin metal sheet is for?

Besides from the ideas given here, could it be to attach the breadboard using magnets ?
The sheet is aluminum.

Smiley

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Some dev boards have a small breadboard stuck ontop of the pcb for a prototype area. The breadboard is stuck directly ontop of the pcb, not breadboard stuck to metal plate stuck to pcb. I think that is good evidence that the metal plate serves is there for physical reasons and not for electrical reasons.