“These are a cool and easy way to ensure your connecting the right pins when using your Pi's IO port. It's especially important to avoid power connection errors, and these headers help ensure basic errors are minimised. Simple as any other header to fit, just ensure it's the right way round! A great idea well implemented.”
“These are great, just soldered one onto my new raspberry pi zero w and connecting that to my new sensor project was easy with less worry that I had connected the wires correctly. Counting where the io channels, I needed, were down the rows was also easy.”
“This may not seem like a big deal, but these pins have several advantages that make them worth the price. They differentiate the power pins (3.3V and 5V), make it easier to identify the ground pins and make it easier to identify a pin by location rather than number (by giving you a relative landmark (thus minimizing off by one errors). They are especially useful when the Pi is mounted in a case that does not include any pin labels.”
