Single row of 40-holes, female header. Can be cut to size with a pair of wire-cutters. Standard .1" spacing. We use them extensively in our SparkFun Original boards. They mate very well with break away male headers.
Please note: You will probably lose one pin with each cut.
There are a few methods of trimming down the female headers. You could use the diagonal cutter [ https://www.sparkfun.com/products/8794 ] to cut down the size of the female header. Keep in mind that you will need to sacrifice one socket. You could also use a dremel and some safety glasses. After cutting the header down, you can sand it down using sandpaper.
Listed below are a few tutorials examples that show you how to trim the female headers:
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Skill Level: Noob - Some basic soldering is required, but it is limited to a just a few pins, basic through-hole soldering, and couple (if any) polarized components. A basic soldering iron is all you should need.
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3 of 3 found this helpful:
These are great female headers, but be aware: if you want to stack your boards you might want to instead buy something like the Arduino Stackable headers (https://www.sparkfun.com/products/10007). The Arduino Stackable headers have longer pins so you can... wait for it... stack boards that use them.
2 of 2 found this helpful:
These headers are great if you have 40 I/O to use, but when it comes to smaller, they are more difficult.
In a project at my last company, I used these to melt power and LEDs to a protoboard and they are not easy to work with. Luckily I didn't need all 40 pins.
Suggestion: When breaking them apart, take a pin out, heat up an X-acto knife and then cut where you pulled the pin out.
2 of 2 found this helpful:
You 'can' cut these with wire-cutters, but it's nearly impossible to do so without sacrificing one of the headers in the process. I typically just cut straight through one of the header pins so the other pins are untouched.
Great for when you need a generic female plug, easy to cut, you will loose one when you cut as the description says, but one can't really design that out, so... Other then that, I have no problems, works great to add headers to a board, originally bought them to replace pins I broke off of an Arduino, and I just keep finding uses for them.
These are deep sockets that accept long or square pins, so they work well with male pin headers. They can be cut to length to form custom sockets for odd parts, unusual pinouts, breakout boards with pin headers on them, or anything you want to elevate some to clear components underneath. The insertion force isn't too high, so it's easy to plug a lot of pins into these at once when need be. I cut at a pin (losing that pin) to avoid breaking the plastic around another pin. This leaves a rough end, but that's easily touched up with a file or emery board if you want a nicer looking end or need to fit right next to something.
I purchased the header at the same time I purchased the spectrum shield. It was easy to cut and worked out good.
I cut off a single hole and prong(yes I lost the one next to it like others have said) and smoothed it off with sandpaper. I soldered a wire to the male end so after a few minutes of work I had converted a wire to have a female slot that as stated mates very well onto male pins and is sturdy. Useful for prototyping and allows me to modify wires to female at a relatively decent price so it's nice to have a strip around in case. Bought this after not finding exactly what I was hoping for and as I said it worked for what I needed. If an admin can point me in the direction of a female/female adapter that can attach to male pins as well as this does on one side and that I can plug and remove a wire from the other I would appreciate it.
I wish I knew about a F/F adapter like that. When I need one, I have always just cut these to the pin count I need and then soldered two of them together to make a f/f. Happy hacking!