Improper pin-positioning within the crimp-tool tool was also a major reason for many of my crimp defects. Tip: I found that recycled stranded-wire Ethernet cable is a good source for the interconnect wire. As a reminder, take great care not to nick any of the conductors during the strip process as this will compromise the quality of the finished connection.Therefore, I check each strip length and carefully trim away any excess wire whenever my stripped length is too long. While I’m sure there are precision wire strip tools out there, I don’t have one.For these reasons, I conclude that strip length is critical to achieving a good Dupont pin crimp. A shorter strip length will compromise the conductor crimp while a longer strip length will either cause the wire to penetrate into the pin too deeply or lead to a degraded insulation crimp. This means that when the wire is correctly and precisely positioned in the pin, the optimum wire-strip length is only 0.10 in (2.5 mm). The figure above shows the anatomy of a Dupont pin.It is seen that the total length of wire going into the pin should not exceed. By using this Pin-Guide and a few other basic ideas, you too I can get a good crimp every time! In particular, you will see a very simple “Pin-Guide Tool” that you can make that will precisely position and hold the female Dupont pin inside of your hand crimping tool throughout the whole process. Over time I studied my problems and came up with this guide and document to share some common crimp problems and solutions.
SN 28B CRIMPING TOOL TRIAL
Even at that, it took lots of trial and error and many crushed, damaged and unusable pins before I was able to get my failure rate under control.
Thankfully, a few soles before me posted documentation, a few Instructables, and some YouTube videos that helped me get a started. These connector pins, also commonly called “Dupont Pins,” and are manufactured by AMP, Tyco, Molex, Samtec and a myriad of others.Ĭrimping Dupont female pins onto a wire requires a special crimping tool, precise techniques, and lots of time and patience! When I first started home-crimping these pins, I found that only about 1 in 10 came out right, with the rest defective in one way or another. These connectors usually consist of female pins that are individually crimped onto the wires which are then then inserted into multi-position connector shells. The male pins are usually mounted to the circuit board with board to board wiring accomplished through mating connectors and wiring. 025 in, square post pins and their mating connectors. Anyone working with an Arduino, Raspberry PI, Beagle Bone, or any other multi-circuit-board project has become familiar with.
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