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Their Bionic Eyes Are Now Obsolete and Unsupported
(spectrum.ieee.org)
This is a most excellent place for technology news and articles.
The same as a closed source one? What does charging something have to do with an app? I'm not even sure what you're saying.
Open source hardware is a thing. See: raspberry pi, pine64, etc.
In hardware, open source means the schematics are available and the device is built with commonly available components; eg: no proprietary chips, standard discrete components, pcb schematics and plans available.