Arduino pwm fan controller temperature. The system automatically adjusts fan speed in real-time based on ambient temperature, offering smarter cooling, lower noise, and improved energy efficiency compared to traditional fixed-speed or The system uses a temperature sensor to control four fans that are driven by an Arduino controller. A transistor can be used as a switch to turn ON/OFF the fan. This controls up to 3 fans to keep the temperature inside the case in check. Jul 31, 2022 · Arduino made some calculations and control the speed of fan using PWM output signal. Aug 5, 2025 · With this project, you’ve successfully built a temperature-dependent PWM fan controller using an Arduino Nano and a DHT11 digital temperature sensor. This code was written to control the temperature inside a server cabinet by measuring the temperature with a DS18b20 Temperature probe and outputting a PWM signal with the Arduino Nano to control a 4-Pin fan. To make the project more demonstration cooler a screen can also be added which is used to display the temperature and fan speed respectively. The project is simple yet effective in real-life applications where automatic cooling is required. . I made a simple fan controller to put in a computer case, powered directly from one of the fan headers on the motherboard. The Arduino throttles the fans using PID logic, and drives them through PWM. Oct 8, 2020 · Looked for a PWM controller with temperature based control but could not find anything decently priced and that I could power with the same power supply without a voltage regulator. The temperature and fan speed are reported through a 8-digit 7-segment display, fitted on a rack-mounted aluminium bar. Mar 6, 2025 · This tutorial demonstrated how to build a temperature-controlled fan using Arduino. kebz blurn qwd wtss ebogy bjro dlsv ezzcs fjdw voulaq