siru.box USB Power Supply (2.5 W)

I had this for few years, and its so versatile. Its a perfect little companion when working on some project when traveling or from home and you don't have a lot of desk space. The performance if good, the user interface brilliant with the build in web server. You just connect it to your computer open the web browser and set your needed voltage & current. There is even an actual real-time graph of actual voltage/current. CC/CV regulation works fine and what you would expect from a much bigger power supply. There are of course limits what you can get from the 5V USB micro input, but for most modern electronics where current draw is low its mostly enough. With up to 15V output it should cover most of what is needed in real life for digital/analog electronics. In practice sou can also power a small motor as long its not to big...