I'm still a total noob when it comes to electronics so please don't be too rough... :sweat_smile:
I read a few posts and basically understand that while a 12-14v battery would work with an arduino, the noise and voltage spikes caused by a car's charging & starting system are not favorable. The best way to resolve the issue is with a regulator, something to filter the noise, and protect against spikes. I am extremely incompetent when it comes to making my own circuit so I'd much rather find something that does everything I need already assembled.
I found this unit on ebay EBAY LINK and am hoping it will do pretty much everything I need. It uses a L7806/LM7806 (is LXXX & LMXXX the same?) regulator, some capacitors, and has multiple v-out pins if I need them. It's rated for 8-35V with an output of 6V & 1.2A. I would add a fuse in serial between the battery and this unit, and then wire the arduino to it.
So my questions are: 1. Is this unit sufficient to use in a car while starting and running. 2. Would a 2A fuse between the unit and the 12v be required/sufficient protection against surges?