usb smart switch

Last update: Sat Jan 10 23:04:54 2026

Often when developping USB gadget, you code, upload, unplug it, plug it again so it is detected as USB (because the power source was my PC USB), rince and repeat. In fact it would be more practical to be able to easily switch "charge only" to/from "USB data" connection. And since in this early 2019 I could use a little practice to get back on track, let's do this.

Presentation

Principle

Points of interrest

Implementation

Bill of materials

Schematics

Source code

Pictures

Links

Helpful sources

Inspiration

All content on this site is shared under the MIT licence (do what u want, don't sue me, hat tip appreciated)
electrogeek.tokyo ~ Formerly known as Kalshagar.wikispaces.com and electrogeek.cc (AlanFromJapan [2009 - 2026])