We are using the $14 Zero WH instead of the $10 Zero W for two reasons. As of the time of this writeup, it is hard to find a vendor that allows more than one Zero WH per order except for several UK vendors that have either no limit or a limit of 10. You can easily get each item above in bulk to minimize shipping costs with the exception of the Raspberry Pi Zero WH, which may be more challenging outside of the UK. The setup for each sensor node is going to cost ~$31 plus shipping (~$37+shipping with the case). (Optional) Raspberry Pi Zero W case ($6).
DHT22 Temperature/Humidity Sensor ($5, two-pack for $10 here).Here is the list of everything we need per sensor node and the approximate cost (minus shipping): Raspberry Pi temperature sensor network video tutorial The HardwareĪ perfect application for a $14 Raspberry Pi Zero WH is to Network Temperature Sensors as this device is compact, inexpensive, powerful, and has built-in WiFi.
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