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
The bottom row can have all 1u keys. Only the middle 4 keys will have switches fixable upside down. I don't know how much you would be able to understand from that, but if you look at the PCB, check out the hot swap layout of the bottom row. - https://static1.squarespace.com/static/5701bc562eeb810fd9247c88/5701c35bf699bbaade59f4b1/5ae943ce758d46165512df05/1538714509753/planck-rev6-hot-swap-top.jpg?format=2500w