Pandemic Dayclock with Indoor Air Quality Sensors
https://hackaday.com/2020/04/08/what-day-is-it/ with a CO2 sensor, OTA updates, and web/XML/JSON interfaces.
https://hackaday.com/2020/04/08/what-day-is-it/ with a CO2 sensor, OTA updates, and web/XML/JSON interfaces.
Jeff Thieleke
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