What is SpaceFN and why you should give it a try
The SpaceFN concept - setting up your space key as a layer switch when held - is probably one of the most useful tweaks in the keyboard hobby. Let me explain how it works. My SpaceFN article on kbd.news made some rounds recently - quite surprisingly given the age of this concept. This piece you're reading is a condensed version of the full post. If you're left with unanswered questions, you'll most likely find the info you're looking for in the original write-up. On my imaginary top list of the most useful keyboard features, tweaks and hacks, SpaceFN would deserve a podium finish for sure. But what makes it so special? In short: SpaceFN is easy to implement, easy to learn, costs nothing, can be used with any keyboard, and can improve your productivity instantly. I will list its benefits below, but can state right at this point that the SpaceFN concept, setting up your space key as a layer switch when held, is clearly one of the most useful tweaks in the keyboard hobby....
Apr 30, 2024
https://www.reddit.com/r/MechanicalKeyboards/comments/4ir869/photos_captors_pbt_backlit_key_caps/
They're made by a company called Captors in China, you can do a Google picture search for 捕获者PBT键帽 (Captors PBT keycaps in Chinese), for better pics of them. I've since ordered 2 more sets and will be ordering a couple more sets here from Massdrop, imho these are the best backlit sets available on the market right now.
They also come in all white, and all black sets, but so far there are only pics of them and and I haven't found them for sale yet:
https://world.taobao.com/item/527254599607.htm
Edit: Some better pics with the sky blue and white 2x3x4 LED's I'm currently using under them:
http://imgur.com/a/irmWN