Not a knock here since I know this is not a majority case, but for marginally quick typists, I would say these wireless/bt keyboards are useless. Input lag is dreadful.

This is the first time I've heard about input lag.

I've used a BT keyboard for years and am the fastest typist out of every developer I've met so clearly something is wrong with your statement.

I type roughly 150 WPM without many errors, though I can burst much higher. The last disconnected keyboards I tried were:

* Apple Wireless Keyboard

* Logitech K 300

* Microsoft -god-knows-what-it-was-called- from back in the day.

In all cases, I experienced stuttering or dropouts of my input at high speeds. This did not happen all the time, but it was frequent enough where I felt the need to go back to a wired keyboard (currently Filco Majestouch). Maybe I had a bad batch, or something was interfering with the signals in my homes. Either way, I don't plan on recommending wireless alternatives for quite some time.

They do exist! I occasionally use a Varmilo VB87M that connects via BT and charges an internal battery with micro-USB.

There's no reason for this. The switches in a mechanical kb aren't electrically any different than those in a membrane kb.

Not that I'm seriously suggesting it, but it occurs to me that you should be able to make something with an Arduino to make any kb bluetooth.

The point is that they're mechanically different, not electrically.

mechanical difference has nothing to do with their wirelessness or lack thereof

I use the Filco Minila Air. Bluetooth keyboard with all the different cherry switches available.