This is probably crazy talk but is there any reason I couldn't use a Dual Motor Tiny Shield to drive a batch of LEDs? Specifically, I have 4 LEDs (350 ma - 3.4 V) connected in parallel with a 10-ohm resistor per LED. Thus, the total current draw is 1400 ma. I'm using a 6V battery as the voltage source. It occurs to me that this would allow me to use PWM to control the brightness of the LEDs.
Crazy? and Thanks