Dobrica Pavlinušić's random unstructured stuff

Hantek DSO 2090: Revision 2

* http://fabiobaltieri.com/2013/07/10/inside-a-hantek-dso-2090-usb-oscilloscope/
* http://www.openhantek.org/
* http://sigrok.org/wiki/Hantek_DSO-2090