John Dee on Nostr: A Tale of Two Sensors The yellow line is an Aqara Zigbee sensor with temperature, ...
A Tale of Two Sensors
The yellow line is an Aqara Zigbee sensor with temperature, humidity and pressure. It doesn't update the sensor readings very often. It costs $15 and requires a USB Zigbee adapter for $20-30. Many Zigbee devices also act as repeaters to extend range. [1]
The green line is a Xiaomi Bluetooth sensor with temperature and humidity. It costs $6 and requires a $6 ESP32 to bridge bluetooth to HomeAssistant with the ESPHome firmware. You also get an LCD display, battery level, battery voltage and signal strength. [2]
So for $3 less you gain high time-resolution sensor readings and an LCD screen showing temperature and humidity. You lose pressure, but pressure will be the same everywhere so it's not necessary to have it in every sensor.
The graph comes from Grafana integrated with HomeAssistant. These particular sensors are monitoring an incubator.
#homeassistant #grownostr
[1]
https://cloudfree.shop/product/aqara-temperature-and-humidity-sensor/[2]
https://cloudfree.shop/product/xiaomi-mijia-bluetooth-temperature-and-humidity-sensor/Published at
2023-06-14 15:10:17Event JSON
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"content": "A Tale of Two Sensors\nhttps://nostr.build/i/41b44b712a2a63d2de5398053e7ee67bc916952d359bdfedb81509f34b679716.jpg\nThe yellow line is an Aqara Zigbee sensor with temperature, humidity and pressure. It doesn't update the sensor readings very often. It costs $15 and requires a USB Zigbee adapter for $20-30. Many Zigbee devices also act as repeaters to extend range. [1]\n\nThe green line is a Xiaomi Bluetooth sensor with temperature and humidity. It costs $6 and requires a $6 ESP32 to bridge bluetooth to HomeAssistant with the ESPHome firmware. You also get an LCD display, battery level, battery voltage and signal strength. [2]\n\nSo for $3 less you gain high time-resolution sensor readings and an LCD screen showing temperature and humidity. You lose pressure, but pressure will be the same everywhere so it's not necessary to have it in every sensor.\n\nThe graph comes from Grafana integrated with HomeAssistant. These particular sensors are monitoring an incubator.\n\n#homeassistant #grownostr\n\n[1] https://cloudfree.shop/product/aqara-temperature-and-humidity-sensor/\n[2] https://cloudfree.shop/product/xiaomi-mijia-bluetooth-temperature-and-humidity-sensor/\n",
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