A new Casio movement for the GS-1200 Tough line – a radio controlled watch model built for shock resistance – has internal LEDs that calibrate the analog hands of the watch.
The movement has a structure where the gears for second, minute and hour are sandwiched between the LED and the phototransistor. With this setup, it is possible to detect the positions of three gears by one sensor. The LED emits light 16 times a second to check the positions of the 300mum diameter detection holes that are formed on the gears.
Most mechanical analog watches eventually slip out of alignment due to the internal motor. Buy adding the tiny LED and photosensor, the watch processor can tell exactly where the hands are on the face and ensure that the user won’t have to recalibrate the watch later.
This is similar to the methods used to sense positions in the old-time mechanical mice.
Thank you for reading this WristWatchReview post. With so many things competing for everyone’s attention these days, we really appreciate you giving us your time. We work hard every day to put quality content out there for our community.
WristWatchReview is one of the few remaining truly independent watch news outlets. We do not have a giant corporation behind us, and we rely heavily on our community to support us, in an age when advertisers are increasingly uninterested in sponsoring small, independent watch sites — especially a site like ours that is unwilling to pull punches in its reporting and analysis. We don't play the games the other sites play and we've paid for it when it comes to ad revenue.
We would love for you to support us on Patreon and every little bit helps. Thank you.
–The WWR Team