I am new to electronics and need your help to verify something.
I am using an Arduino Duemilanove to regulate the speed of a 20VDC motor. This perfect from USB, however I am planning on running the board on its own. This would require a 12V adapter. As I am already working with 20V from the Motor it occured to me that I could perhaps use this power instead of another adapter.
I have found the following item on eBay (cant post links, search on eBay for itemnumber: 230397208452) which should imho do the trick. It has slightly more capacity than required (figured this to be a good idea when relying on HK electronics). The 20V power supply can definitely handle the extra power.
So my only question is: will using powering the Arduino like this work in a safe and reliable way?
Thanks in advance.