The concept is great and the picture looked great. However, when I started using the "1 to 2" expansion board, it's not exactly 1 to 2, but more like "1 to 1.5" on at least the two I've bought. The pins on one side of the board are rectangular and all measure 0.025" x 0.025" so they fit into standard sockets. The pins on the other hand look fine in the photo but are inexplicably different, measuring 0.025" x 0.016" (so not square). As a result, at least in my application, the contacts on the second side mentioned are too small to reliably contact the standard sockets provided for these connectors. This may depend on the internal geometry of the jar since an xy axis is 0.025 inches, but they haven't worked reliably for me. They may work for you, but I would ask the seller about them before buying if I take care to fit them into standard ships.
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