DIY Adjustable Power Supply with Fast Charging | From Old PSU to Smart Power Hub
Published at : 23 Dec 2025
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 1.3V 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