Interconnects

US$3.07
They're what you see on the back of nearly every synthesizer and drum machine. These are nice sturdy jacks, and breadboard-friendly, with all the pins on 0.1" spacing for easy wiring.
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US$1.75
XBees are so cute and tiny but if you're using them in a circuit you'll be annoyed to find that your classic 0.1" headers don't fit them! That's because they use 2mm spacing instead of 2.54mm spacing. That's why you need a special socket like this one.
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US$1.81
If you need to connect a DC power wall wart to a board that doesn't have a DC jack - this adapter will come in very handy! There is a 2.1mm DC jack on one end, and a screw terminal block on the other.
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US$1.81
If you need to connect a battery pack or wired power supply to a board that has a DC jack - this adapter will come in very handy! There is a 2.1mm DC plug on one end, and a screw terminal block on the other.
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US$8.67
Instead of soldering wires to your perf board, solder in these 0.1" pitch terminal blocks. There's a little spring contact so you can pull back on the plastic bit and slip in your 20 to 26 AWG solid or stranded-core wires. Each terminal block is electrically isolated from those next to it.
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US$78.67
You know those ZIF sockets we have for DIP chips? Well these are just like that but for SMT parts! Yeah, that's right, now you can program and test out your favorite new parts in TQFP-32 packages. This test sockets is good for any QFP-32 in a 7mm square body. Simply open the latch, place the chip in carefully and then close the top over it. The chip is held securely against gold 'fingers' in the socket.
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US$5.25
Each pack contains 5 x 16-pin long headers, 0.1" pitch, that can be stacked next to each other on a 0.1" grid and broken apart easily with pliers or diagonal cutters. They're even gold plated so they wont oxidize!
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US$5.17
Each pack contains five 36-pin long headers, 0.1" pitch. They're even gold plated so they wont oxidize! You can cut these down to different sizes fairly easily. First, count how many positions you want as the final piece, then pull out the next pin using a pair of pliers. Finally, cut through the empty spot with diagonal cutters. You can clean off the half-spot using a file or with the diagonal cutters. These are 'standard' female 0.1" headers such as used on dev boards like the Arduino. If you have something with 0.1" square-pin male header on it its almost certainly going to match with these (the only exception is 'round' swiss-pin headers, but those are not as common).
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US$9.52
These miniature precision 6 contact connector features gold plated contacts, threaded locking ring & precision fit & finish.
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US$6.34
These are male XLR panel mount connectors.   Order# Description  44-620  4 Position Male XLR Panel Mount...
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US$8.12
These are female XLR panel mount connectors.   Order# Description  44-626  5 Position Female XLR Panel...
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US$5.73
These are In-Line male XLR connectors.   Order# Descritption  44-600    4 Position In-Line Male XLR Connector...
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US$7.62
These are male XLR panel mount connectors.   Order# Description  25-543-0  3 Position Male XLR Panel Mount...
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US$8.39
These are male XLR panel mount connectors.   Order# Description  25-545-0  5 Position Male XLR Panel Mount...
Delivery within 2-3 weeks
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US$6.32
These are female XLR panel mount connectors.   Order# Description  25-533-0  3 Position Female XLR Panel Mount...
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