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$35 Sensor Watch crams a modern microcontroller into a classic Casio wristwatch

Most modern smartwatches have color displays, wireless capabilities, the ability to alert you to notifications, and support for running first-party and third-party apps. Sensor Watch doesn’t do any of that. But it is designed to take a classic Casio F-91W wristwatch and give it a modern upgrade thanks to a tiny circuit board with an […]