Zicada - DIY Zigbee Multisensor
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Open-Source Temperature, Humidity, and Contact Sensing
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Model information
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- Printables
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- Other House Equipment
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- Creative Commons — Attribution — Share Alike
Zicada is a DIY Zigbee sensor based on Nordic’s nRF52840 SoC. It combines a temperature and humidity sensor with a hall effect switch, making it suitable for both climate and door/window monitoring. Zicada is optimized for ultra-low power consumption, running at just 6µW in standby. This allows it to operate on a rechargeable AAA battery for 2 years or longer. It is fully compatible with Home Assistant (ZHA) and Zigbee2MQTT.
Update February 2026: Added V2 versions with a hole for improved airflow to the temperature sensor and a larger button. (see the new project log on Hackaday.io: https://hackaday.io/project/204509-zicada-diy-zigbee-multisensor/log/246042-2026-upgrade-adding-a-light-sensor)
Project links:
https://hackaday.io/project/204509
https://github.com/CoretechR/Zicada
https://www.youtube.com/watch?v=TRaUVJfP1CE