Components supply

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Electronic components (links to AliExpress)

Before ordering from AliExpress, please inform yourself of how customs are handled in your country. It is even better to consult with someone who regularly buys electronics from overseas, specifically, from China. Alternatively, you could revert to local electronics distributors.

• NodeMCU (ESP8266, CPU/WLAN) US $1.00 (May 2023)

• PMS5003 (particulate matter sensor) US $14.00 (May 2023)

• SIM 800H/L (GSM module) US $6.00 (May 2023)

• DHT22/AM2302 (temperature and humidity, optional) US $1.50 (May 2023)

• 10 Watt Solar Charger Kit (alternative power source) US $129.00 (May 2023)

• USB Cable (flat, 2m, Micro-USB)

• USB Power Supply (5V, 1A minimum). Please don't go for the cheapest, because inferior electrical components could cause interferences on your circuit. Sometimes, products on AliExpress don't have CE certification and it's better to source one locally.

Weather protection

• Enclosure: You can find generic ones in most local hardware stores or design custom ones and have them 3-D printed( manufactured).

• Cable ties: 0.8/ 1 m in length cable ties should be long enough to secure the sensor kit in most cases. ( You can adjust the length according to the dimensions of your enclosure)

• Insect protection: To avoid any insects or animals building nests or damaging the sensor, adding a net or mesh material to any air vents might help.