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View Full Version : Easy question.... i hope?



Ravenkallen
11-13-2010, 05:32 AM
Hey, y'all. After a long time delerbirating and trying to find alternative routes, i finnally bought a Propeller Demo Board..I can't wait to try playing with video(something i have yet to do), but i have one, perhaps obvious, question...The specs say that the board can be powered by a 6-9 volt source supplied by the barrel jack, but is there another way to feed power to the device? I looked at the header and i did not see one labeled "Vin" or something. Is there a header that you can supply power to? Or will i have to find a alternative power input? Thanks for the help.

RK

MacTuxLin
11-13-2010, 08:13 AM
Yeap. Been doing this & no problem for me.

Ravenkallen
11-13-2010, 05:23 PM
Uh, that picture you showed was not of a Propeller Demo board... I was wondering about one of these...Anybody?

http://www.parallax.com/tabid/768/ProductID/340/Default.aspx

Mike Green
11-13-2010, 05:33 PM
There are connections to the +5V and +3.3V supplies in the header socket along the edge of the breadboard. Look at the silkscreen label and the schematic.

If you're looking to supply +5V to the board, you could also just feed that into the power connector. The regulator is a low drop-out one and should put out around 4.5-4.8V with a 5V input. I think the only thing that's used for on the board is the PS/2 and VGA connector and the 3.3V regulator, so you should be ok with the 4.5-4.8V.

Ravenkallen
11-13-2010, 06:38 PM
@Mike...Wow, you read my mind... I was kinda hoping that i could get away with using only 5 volts instead of 6...Thanks for the help man!!

wjsteele
11-13-2010, 08:18 PM
@Mike...Wow, you read my mind...

Yep... Mike has a tendency to do that a lot around here! :=)

Bill