Power connection on olemexino328

[MrMr]

Hi

Where can i connect the 24VDC the documents says that can power the olemexino?

Is it only through the powerjack?

What will happen if the USB is powering the unit and i try to make a analog reading with ground from another powersupply connected to ground on olemexino?

Thanks for the help.

Regards Mark

[MrMr]

Another question, is there the arduino bootloader on the 328? Or do i have to get AVR-ISP500 or similar?

[olimex]

24V can be applied only to the power jack
if your grounds are different you will not measure correctly
Olimexino-328 have bootloader you do not need programmers