The prototype has open sides. I am considering adding walls. Please fill out the interest check for your preference to be heard.
The prototype has extra cutouts that will not be in the final product. For example the switch cutouts are extra tall on the spacebar row in the prototype.
The spacebar row angle and offset (from shift row) will probably be smaller in the final product than in the prototype.
It has long been known that a flat typing surface is not very ergonomic. This is why profiled keycaps exist.
You may have noticed that all keycap profiles share a common characteristic: the overall typing surface is in the general shape of a curve.
(https://i.imgur.com/LM8NMvI.jpg)
(original photo from https://geekhack.org/index.php?topic=68550; check out that thread to see lots of other profiles)
Changing the keytop angles (in order to achieve a curved typing surface) has flaws:
- The angle of the force applied to the key is not in line with the translation axis of the switch. As a result:
- Only the component (https://www.physicsclassroom.com/class/vectors/u3l1d) of the force that is parallel to the switch action actually contributes to moving the switch. The operator therefore needs to press harder in order to move the switch the same amount (vs flat keytop):
(https://i.imgur.com/0hPlQGi.jpg)
- The perpendicular force component becomes friction. This results in a less smooth key travel.
- Additionally, the added friction resists the movement of the switch and makes the operator have to press even harder!
- The angled keycaps also need to be taller. The perpendicular force component therefore has greater leverage, which increases its added friction (which decreases smoothness and requires you to press even harder):
(https://i.imgur.com/EPcUFTg.jpg)
To fix these flaws, curve0 has the switches themselves at an angle. This gives a curved typing surface with flat keycaps.
(https://i.imgur.com/hiin7KF.jpg)
Another advantage of having the switches at an angle is that your finger actually moves in the direction of the press during the keytravel, which feels more comfortable (in my opinion at least).
Layout options TBD. Since extra switch cutouts (from supporting multiple layouts) would be visible on the bottom two rows, I will probably have multiple versions each with fixed layout (on those rows). Please fill out the IC form for your preferences to be heard.