Symmetry Optical Keyboard
Feature
connect though usb c in two ways
- Daisy chain
one’s left side connect to pc and right side connect to another’s left side.
- point to point
both left side connect to pc directly.
Hardware
keychron low profile optical
response time
| tr | tf | unit | |
| pt | 18 | 5 | us |
| sw | 200-2000 | 200-2000 | us |
The speed of optical switch depends on the speed of finger, the shortest time for finger to press a switch is about 200 us, but usually it takes a few milliseconds.
dimension: 122 * 133 * 13.4 mm
Firmware
optical switch
- schmitt trigger mode
- adc trigger mode
- adc difference mode
function
- multiple layers
- fn
- repeat mode