Sir i am using the intel galileo board which supports arduino 1.5.3 IDE. But in my project i want my robot moving with galileo on it.So how can i power up my galileo with a battery pack of 12v and the down convert it 5v and use it for galileo...plz help me
element14jamie ... Jamie, another thing to look at 
Sorry you did not get a reply earlier, I responded directly from the email as it says I can but it is not showing up here, did you get a response ?
anyway, Yes you could use a 7805 regulator but it would be very inefficient, much less than 50% as you would be dropping all 7V across it and at one amp thats 7W, add this to the 5W (Assuming 1A again) thats 12 W consumed for only 5W used
A Buck converter will be in excess of 90% efficient as it is an energy converter, not a voltage dropper.
Both will work, 7805 is cheaper but at the cost of heat and wasted power from the batteries
Regards
Peter
element14jamie ... Jamie, another thing to look at
Sorry you did not get a reply earlier, I responded directly from the email as it says I can but it is not showing up here, did you get a response ?
anyway, Yes you could use a 7805 regulator but it would be very inefficient, much less than 50% as you would be dropping all 7V across it and at one amp thats 7W, add this to the 5W (Assuming 1A again) thats 12 W consumed for only 5W used
A Buck converter will be in excess of 90% efficient as it is an energy converter, not a voltage dropper.
Both will work, 7805 is cheaper but at the cost of heat and wasted power from the batteries
Regards
Peter
