In this project, I transformed an old power supply module into a smart, adjustable power hub. Using the LM2596 buck converter and a mini digital voltmeter, I created a variable output voltage between and 12V — perfect for powering small electronics, Arduino boards, and DIY projects. To make it even more practical, I added a fast charging module for phones, tablets, and other USB-powered devices. Finally, I designed and 3D printed a custom case to give the project a clean and professional look. This build is simple, functional, and perfect for anyone who loves DIY electronics and upcycling old components! ⚡️ Components used: - Old power supply module - LM2596 buck converter - Mini digital voltmeter - Fast charging module (PD/QC) - 3D printed case If you enjoyed this build, leave a 🔋 in the comments and subscribe for more creative electronic projects! #DIYPowerSupply #LM2596 #ElectronicsProject #FastCharging #3DPrinting #ZeroToInfinity #BuckConverter #DIYCharger #AdjustableVoltage