[M] Concept2 refined

A project log for Tetent [gd0090]

A wireless input device that's slower than... thinking(?) but faster than any other character input method, theoretically.

kelvinAkelvinA 09/11/2022 at 23:133 Comments
Case dimensions: 103x41x46mm

It's taken 10 prints (avg 1h 20min each) of a concept with the new Tetwin switches to get to this solution. It's suprising, as every time I impemented milimetre  tweaks, I was thinking that this was going to be "the one". This one offers passable ergonomics for all fingers, though I admit that the thumb button may benefit from being a few more milimetres away from the centreline. I'm not going to do that though, as 41mm wide allows me to do this for Teti:

The key spacing is 21mm, which is slightly larger than the 20mm used for the #Tetent Timespy [gd0136]. The height offset is [-1, 0, -1, -2] (starting from Finger1 (Finger1 is the thumb)) where on gd0136 it's [0, 0, -2] for the fingers.

This layout allows for typing/mouse usage without tenting being a mandatory requirement. This means that I don't have to worry about custom leg straps or table clamps.

Now that I'm writing this log, I think I'm going to move the OLED to the top centre (where the top USBC port is now) for better visibility, especially for when cables are connected.

It looks like some modern startup's rocket logo. The black and white is totally selling the whole moondust aesthetic.

Actually... that looks cleaner and more ordered than the design I've had for the past 24 hours.

Looks even better with some actual USBC ports instead of placeholder gaps.


kelvinA wrote 09/14/2022 at 19:53 point

I just found out about the Seeed keyboard competition and the XIAO nRF52840 (Sense) sounds like the kind of control board I've been looking for. 

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kelvinA wrote 09/12/2022 at 18:58 point

This Tetent concept is actually similar to my very first inital idea of the keyboard all the way back when Teti was but a PC made of unobtainium (aka start of 2021). The idea was more similar to charachorder, whereby there'd be a home row of flat joysticks or 2 axis strain sensors. To get J, you'd press down on the J joystick, and U would be a slide of the J joystick forward (to the direction U would've been) while pressing it.

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kelvinA wrote 09/12/2022 at 11:46 point

I've gone and increased the width for better thumb ergonomics. The size is now 103x47x47mm.

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