Well, this hack makes us itchy pink. We like the idea of buying some very cheap technology and using it to do amazing things. This is a textbook example. [davedarko] I found the cutest little calculator watch on Ali Express, and it’s Is making a new PCB for itThe plan is to use an ARM processor and Arduino, and add some additional features, such as a 24-hour mode and pink (or possibly RGB) backlight. The new brain will be an ATSAML22G18A, which has an on-board LCD controller and an I/O pin, eliminating the need for complex operations on buttons.
one [davedarko]The main goal is to keep the LCD and figure out how to talk to it. The first task is to reverse engineer the LCD controller of the watch by finding the secret under the black spots of epoxy.This is an eye-opening experience because [davedarko] Never used LCD directly before. A strange reading caused him to break the oscilloscope. Long and informative short story, [davedarko] It is found that it uses 1/2 of the offset to generate the waves required for the multiplexing section and the alternate holding signal. This is definitely worth seeing!
We like the clocks here and have seen all kinds of hackers, especially Casio watches. Want dark mode? complete. Enable hidden countdown timer? We also have. Have you ever wondered how waterproof F91W is?