Reverse engineering LCD displays with Joey Castillo @Hackaday @josecastillo

Joey Castillo decided that he could more out of LCD displays with a little tinkering, as shared at Remoticon 2021.

Joey’s talk is a great way to learn the skills needed to reverse engineer a typical segment LCD.
Joey got his start hacking on these displays via his Sensor Watch project – a board swap for the venerable Casio F-91W wristwatch, with the project on CrowdSupply. It kits out the 33-year-old watch design with a modern, low-power ARM Cortex M0+ microcontroller running at 32 MHz that completely revolutionizes what the watch can do. Most importantly, however, it repurposes the watches original segmented monochrome LCD.

While segment LCDs are old-school and basic, they’re still a great technology for any low-power project that needs to display some data. After all, just think about how long the average digital wrist watch can last on a single coin-cell battery! [Joey]’s talk is a great primer if you’re interested in taking advantage of these displays, whether in existing hardware or by getting your own made from scratch!

See the video below and read more on Hackaday.


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