General > General Technical Chat
3M breadboards for cheap
cdev:
You know they are the real deal because at the beginning its almost impossible to force your wires in there.
Note: I meant appropriately sized wires.. Good breadboards don't really lose their grabbing capacity with use, and the stiffness always remains to some extent, but lessens with a bit of use.
In my experience they work better than I would tend to expect, knowing how they are constructed.
Good breadboards are a real success story in terms of helping make electronics experimentation easier and more user friendly.
Richard Crowley:
--- Quote from: wilfred on August 26, 2017, 03:22:58 am ---Has anyone torn bad and good breadboards apart to compare and measure in some quantifiable way just what makes one BB good and another bad?
--- End quote ---
Here are a couple of them. I believe there are more.....
rdl:
One of those SYB-120 boards (same as in the first video) got me once when a circuit didn't work because the power rails were split with no indication. Then they got me again when I jumpered them across the middle and the circuit still didn't work. A number of boards I have, including 3M, have power rails that are split in half. That SYB was the first I've seen that was split in thirds.
nanofrog:
--- Quote from: evb149 on August 26, 2017, 02:06:08 am ---What is the situation with what kinds and sizes of component leads can safely be used with these?
--- End quote ---
Max Size Ratings (per 3M)
* DIPs of all sizes & .032"/20AWG diameter leads for discretes
* 22AWG solid wire for interconnects
--- Quote from: Richard Crowley on August 26, 2017, 03:28:20 am ---Here are a couple of them. I believe there are more.....
--- End quote ---
FWIW, the busses on 3M's full length Super Strips and 3/4 length Circuit Strips only connect for half the total length. So 25 connected points on the Super Strip & 20 on the 3/4 length versions. So links in the middle are necessary if you want them connected end-to-end.
Full & 3/4 distribution strips are connected end-to-end.
tooki:
--- Quote from: nanofrog on August 26, 2017, 04:53:01 am ---FWIW, the busses on 3M's full length Super Strips and 3/4 length Circuit Strips only connect for half the total length. So 25 connected points on the Super Strip & 20 on the 3/4 length versions. So links in the middle are necessary if you want them connected end-to-end.
--- End quote ---
Not quite. That is correct for the full length ones: they are two halves. But the 3/4 length ones have a contiguous strip. (I just checked mine with a DMM.)
See http://www.assemblyspecialist.com/WebStore/TSandDS.html
You can see that the full-length ones expressly show that they are 8 half-busses. And that the 3/4 length ones have no such qualifier.
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