USB-C battery charger with voltage regulator

thingiverse

This is my battery charge regulator with an adjustable voltage step up module and a built in voltmeter. Dealing with a mess of breadboards and wires just makes it too easy to switch up polarity and after years of accidentally burning up my electronics prototypes I've decided to standardize all of my connectors to USB Type-C to prevent that. I don't have a lab power supply and most of the stuff I do is portable and often requires batteries anyways. Fortunately 18650 are cheap and easy to find, unfortunately most of the time 3.7V is just not enough. So i designed this to be my ultra portable, simple all-in-one universal solution for powering my projects. The case is 44x44x22mm and just stick it together with hot glue, just like the components after soldering them together. This makes it both sturdy and kind of waterproof. It takes in a standard 18650 trough a female USB-C connector and outputs anywhere between 3.8V and 14V at about 1.5A of current on a male USB-C connector. The second female USB-C connector is for the charger. You can also use this without a battery Components used are cheap and widely available: - TP4056 lithium charge regulator - MT3608 adjustable voltage step up module - 0.28 inch voltage meter display - SPDT Slide Switch - USB Type-C female connector - USB Type-C male connector