Parts, Purchasing

• RPi Zero W, preferred for this project:

  • RPi Zero series, because it easily runs headless, and only needs a 5 VDC, 1A power supply with micro USB connector.

  • Unlike the plain RPi Zero, has built-in WiFi.

  • Unlike the RPi Zero WH, you can solder just the pins you want, so you don’t expose possible short circuits of supply Voltage to ground from the unused pins.

    

    Exposed pins when a full GPIO header is soldered to the RPi Zero board.

• RPi 4 running NextCloudPi : Follow the wiring and installation instructions to add dhtioc to your NextCloudPi server!

Tip

Enclosures

For the best measurement of ambient conditions, place the DHT22 sensor head outside of the enclosure. Place the sensor inside to measure the RPi operating temperature.

Parts List

1. Raspberry Pi (any model)
   1. power supply for the RPi (if you don’t have)
   2. SD card for the RPi, 4GB or larger (if you don’t have)
   3. enclosure or case for the RPi (suggested, optional)

2. DHT22 (AM2302) Digital Humidity & Temperature sensor
   1. solderable header pins, sockets, jumper wires (optional), as needed
   2. connector wiring (optional), as needed

Purchasing Suggestions

• RPi Zero W complete starter kit:

  https://www.microcenter.com/product/627789/vilros-raspberry-pi-zero-w-complete-starter-kit

• RPi Zero W kit:

  https://www.microcenter.com/product/606952/canakit-raspberry-pi-zero-w-(wireless)-with-official-case-and-power-supply

• RPi Zero W board:

  https://www.adafruit.com/category/933?src=raspberrypi

• typical indoor enclosure (Adafruit case for the Zero): https://www.adafruit.com/product/3252 or https://chicagodist.com/products/adafruit-raspberry-pi-zero-case

  

  Adafruit enclosure with RPi Zero W for indoors.

• typical outdoor electrical outlet enclosure: https://www.homedepot.com/p/Red-Dot-1-Gang-GFCI-Weatherproof-Non-Metallic-Electrical-Box-Cover-Kit-S355P/204193191

  

  Outdoor enclosure with RPi Zero W.

• DHT22 sensor: https://www.amazon.com/HiLetgo-Temperature-Humidity-Electronic-Practice/dp/B0795F19W6

  

  DHT22 sensor, with supplied jumper wiring.

• header pins & sockets, assortment: https://www.amazon.com/MCIGICM-Connector-Assortment-arduino-Stackable/dp/B07X23LQQF or https://chicagodist.com/search?q=header

• jumper wires: pin/pin, socket/socket: https://www.adafruit.com/category/306 or https://chicagodist.com/search?q=jumper%20wire