Add some improvements, fix issue with schematic error

Improve layout and add voltage sensing circuit to layout

Improve BOM

Add more BOM informations

Add more order informations, create BOM

Add some little changes to the schematic, add calculations

Improve pcb routing, add testpoints and etc. The design improves a lot. Still lots to do, but most important design parts should now be drafted almost complete.

Place remaining components onto pcb, remove galvanic protection circuit

Initial version of HighPower-Mechaduino schematic