How can I power arduino uno with monster motor shield i am needing external source to power arduino uno ?
Lacking in all sorts of details here.
What’s a monster motor shield ? For use with Dinosaur projects, 1A, 100A, volts ?
Monster shield dual channel
by spark fun used for arduino
Looking at the schematic, there is a 5V needed on the board and the board does have a means to generate 5V.
So the Arduino needs to provide the 5V and hence needs to be powered.
PS
Next time, post clickable links to products so we're sure we're talking about the same product.