Here is a tiny temperature and humidity sensor with an E-ink display that you can integrate into your projects without a whole lot of effort. It is powered by a nRF52 multi-protocol chip (BLE, Zigbee, Thread, ESB) and is compatible with MySensor platform.
Hot Computer Stuff
DIY Temperature and humidity sensor with an electronic ink display 1.02 Inch ( GDEW0102T4 )
This sensor is Arduino development compatible. It uses a e-paper display (GDEW0102T4) from Good Display. Efektalab is selling this for under $30 at this time.
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