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I received the RED version of this device as others have also commented.
I ordered 10 of the 28 pin ZIF sockets and from what I got I think you may have received a bad batch. Out of the 10 sockets I can only get one to work reliably.
You might want to check out a few in your stock.
When I ordered from you I also ordered 10 from ADAfruit (ID 382). Curiously, they have the same part number but they are NOT the same thing.
The ones from Adafruit have a couple of bars across the slot area and they are blueish in color.
The BLUE version from ADAfruit works fine.
The problem with the RED units is they do not fully open. The metal tabs only partially open which prevents a proper insertion of the next chip. I can get one or two open/close cycles on the RED units, then it will fail to open completely. If you remove it from the circuit and snap it a few times it can be made to work again, but that is too much trouble.
The BLUE units I got from ADAfruit all work fine. I think the RED units are some kind of weird rip-off that suffers from a quality issue.
Hi, Sorry to hear that you ran into issues. We’ll be happy to check out our stock. Also, if you would like to return the units that did not work, please contact our returns team for more assistance. https://www.sparkfun.com/returns Thanks,
It’s a little tricky with breadboards - it likes to pop out, and requires a little force to push it back in. Otherwise, works quite well. After soldering together a makeshift Uno shield, I’ve had no problems with it. Opens and closes nicely.
Note that I received a RED one as pictured (pointing that out due to another comment concerning blue ones) and it works as expected. I’ve had no issues with bad connected and it seats in my breadboard surprisingly well.