๐ ๏ธ MAKER GUIDEApr 04, 2026โขโฑ๏ธ 1 min readโข๐ณ๐ต Tested in Nepal
High-Pressure Aeroponic & Mushroom Greenhouse Mist Fogger with DHT22 & Relay
Maintain optimal 85-95% relative humidity for oyster and shiitake mushroom farming with automated high-pressure micro-nozzle misting controlled by ESP8266.
๐ ๏ธ BILL OF MATERIALS (BOM)
Required Hardware & Component Checklist
Curated components verified for this project. Check the items you need, adjust quantities, and add straight to cart:
Estimated Total (5/5 items):
NPRย 2,830
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NPRย 750
NPRย 750
NPRย 180
NPRย 550
NPRย 600
High-Pressure Aeroponic & Mushroom Greenhouse Mist Fogger with DHT22 & Relay
Mushroom fruiting bodies shrivel and abort when chamber humidity drops below 80% RH. This closed-loop controller uses the DHT22 Digital Temperature and Humidity Sensor and an R-385 12V Micro Pump to deliver ultra-fine atomized moisture bursts.
Hardware Bill of Materials (In Stock at Ghumti Pasal):
- Microcontroller: Wireless module CH340G NodeMCU V3 ESP8266
- Climate Sensor: DHT22 Digital Temperature and Humidity Sensor AM2302 Module
- High-Power Switch: 1 channel 5V 10A low level trigger Relay Module
- Atomizer Pump: 12V Micro Water Suction Pump
- Power Supply: 12V 3A 36W SWITCHING AC-DC ADAPTER
Circuit Pinout & Wiring Connections:
| Component / Sensor Pin | NodeMCU ESP8266 Pin | Function / Description |
|---|---|---|
| DHT22 DATA | Pin D4 (GPIO 2 - Pull-Up) | 1-Wire High Precision Humidity Stream |
| 1-Channel Relay IN | Pin D1 (GPIO 5) | Low Active Trigger for Mist Solenoid / Pump |
| 12V Misting Pump (+) / (-) | Relay NO & 12V 3A Supply | Switched High-Pressure Fogging Line |
| LM2596 / 5V DC In | VIN & GND | NodeMCU Logic Power Supply |
