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Watchy, an e-ink-equipped smartwatch that can be purchased for only $55 and can be freely optimized, is being developed by SQFMI, which develops various hardware as open source.
The watch adopts ESP32 as a communication module, and is equipped with a vibration motor and a 3-axis accelerometer. In addition, the dial adopts 1.54-inch e-ink with a resolution of 200×200 pixels, so anyone can customize the display content. Looking at the specifications, the processor is ESP32-PICO-D4, and the wireless connection support function supports Wi-Fi and Bluetooth. The interface uses built-in USB and has 4 physical buttons. There is no touch panel and the sensor has a 3-axis accelerometer. The RAM is 520KB, the flash memory is 4MB, and the battery capacity is 200mAh. In addition, it measures 34×46×9mm and weighs 18g.
Since the watch is sold disassembled, it needs to be assembled before use. The package contains double-sided tape, e-ink module, battery module and band. First, connect it based on the e-ink module and fix the double-sided tape. Then plug in the battery and finally install the band.
The e-ink mounted on the watch can display gray scale fonts and bitmap images. Various dials can be designed according to the user’s idea.
Watch is being developed as open source, and design drawings and source code are available in the official GitHub repository. Related information can be found here.
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