LM2596-NR Hack | Smart Temperature Controlled Fan | with buck converter
This project uses an LM2596-nr buck converter and its feedback (FB) pin to dynamically adjust output voltage based on temperature. With just a few components like an NTC thermistor, transistor, and Zener diode, you can build a fully practical and stable temperature-based fan controller. This is a simple, low-cost, and real-world useful circuit that anyone can build. 🧰 Components used: LM2596 buck converter module NTC thermistor NPN transistor (C945 or similar) Zener diode (5.1V) Resistors (1K, 470 ohm) Capacitor (for stability) Fan (DC) ⚙️ How it works: The circuit controls the feedback pin of the LM2596. As temperature changes, the NTC thermistor changes resistance, which drives the transistor. This alters the feedback signal and adjusts the output voltage, controlling the fan speed automatically. If you have any questions, comment below — I will reply. 👍 Like, share, and subscribe for more practical electronics projects.
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