just note that there are different expertises in Arduino land, on high level hardware versus software
Hardware
- external electronics
- internal AVR
- sensors & physics
- protocols, communication & busses (SPI I2C)
- networking
- servo's & robotics
- ...
Software
- bootloader levels
- C++, optimization
- libraries
- ...
How can one indicate its specialities in an uniform way so I can search for a certain profile ?
(now there are less than 25 it is just browse ..