Prices are approximate and by memory.
- NodeMCU V3 Lua - 3€
- Digital Temperature and Humidity DTH 22 - 2€
- Photoresistor (LDR) Sensor Module Detects Light Sensitive Photodiode for Arduino - 0.80€
Old fan - free
Wooden box from promo beer - free
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Step 1: Drawing a Wooden Box
Step 2: Painting in White
Basically what I needed to construct was a Stevenson Screen.
Step 3: System Test With All Sensors
Step 4: Everything Enters the Box
Step 5: One Magnet From Dead HD
Step 6: Sources:
Air Quality Sensors - PPD42NS:
Step 7: Github.com