Every aspiring electrical engineer quickly figures out that a fast and easy way to get boards and wires connected is to use header. We like to keep a couple different kinds of sticks of header around but the first one you’ll want to get plenty of is the male 0.1″ ‘breakaway’ type. You can easily break off pieces to fit whatever you’re working on. We suggest having at least 10 sticks of single row, 36 or 40 pin header around.
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Double height male headers that can be inserted into a breadboard and/or used for stacking seem to be a bit hard to find. Some other electronics shops have started selling them. Of course it would be nice to get them from Adafruit.
rob t, can you post a link to a photo showing what you mean in the partsfinder “request” page? we’ll add it!
Headers seem to be unbelievably expensive from Digikey and the like. I ordered some at about 1/10th the cost from Futurlec, and have had no problems with them. It takes a while to get the shipment, but it was worth it for me.