How to Make Temperature Controlled PWM Fan Controller Using Arduino and DHT11 Sensor

Learn How to Make Temperature Controlled PWM Fan Controller Using Arduino and DHT11 Sensor for electronics cooling!

In this project, we use an Arduino Nano, a DHT11 temperature sensor, and a 16x2 I2C LCD to create a PWM-based cooling system. The fan speed is automatically adjusted according to the temperature, ensuring your circuits and devices stay cool and protected.

We also measure the fan RPM using the tachometer wire and display temperature, duty cycle, and RPM on the LCD. This makes it a perfect DIY project for electronics cooling, enclosures, power supply systems, and Arduino enthusiasts.

✅ PWM fan control
✅ DHT11 temperature sensing
✅ Tachometer RPM monitoring
✅ LCD display interfacing with Arduino

🔧 Components Used:
Arduino Nano [https://amzn.to/43JiD0X]
DHT11 Temperature Sensor [https://amzn.to/4odmxbS]
16x2 I2C LCD Display [https://amzn.to/4mQ6TTe]
4-pin PWM DC fan (5V or 12V) [https://amzn.to/44TX4g9]
7805 Regulator [https://amzn.to/45pc4mi]
Green LED
Resistors (1K, 10K) [https://amzn.to/44SbNIq]
220uF/16V Capacitor [https://amzn.to/45aP3Cp]
External Power Supply (for high-power fans) [https://amzn.to/3IR18VW]
Breadboard and Jumper Wires [https://amzn.to/3U17ZOT]

📸 Gear Used:
Camera: Sony Alpha ZV-E10M2K (16-50mm Power Zoom Lens) [https://amzn.to/4rePypn]
Tripod: DIGITEK DPTR 895VD [https://amzn.to/42y7Cjd]

📌 In this video, you’ll learn step by step:
How to connect a 4-pin CPU fan to Arduino Nano
How to read temperature from DHT11
How to adjust fan speed using PWM
How to measure RPM using the tach signal
How to display everything on a 16x2 LCD

👉 Full source code and circuit diagram available on my website: https://circuitdiagrams.in/temperature-controlled-pwm-fan-controller

If you found this helpful, don’t forget to Like 👍, Share 🔁, and Subscribe 🔔 for more Arduino projects!

📱 Connect & Follow:
🌐 Website: https://www.circuitdiagrams.in
🐙 GitHub: https://github.com/tanmoykundu80
📘 Facebook: https://www.facebook.com/circuitdiagrams
📸 Instagram: https://www.instagram.com/electrogadget80
📌 Pinterest: https://in.pinterest.com/creativescanner8481
✉️ Email: info@circuitdiagrams.in

🔥 Hashtags
#Arduino #ElectronicsCooling #TemperatureControl #CoolingFan #ArduinoProjects #SmartCooling #ArduinoDIY #ElectronicsDIY #OverheatProtection #ArduinoNano #PWMFanControl #dht11

Видео How to Make Temperature Controlled PWM Fan Controller Using Arduino and DHT11 Sensor канала Electro Gadget