I want to control some high-wattage LEDs from an Arduino, and I’m a little unsure how to power everything.
In https://learn.sparkfun.com/tutorials/pi … controller I read “When using an external supply for the PicoBuck, the grounds of the two boards must be connected! If the power supply is 12V or less, the Arduino can be powered from it as well”.
Looking at the hookup diagram from that page (a copy is attached to this post), I’m not clear on how the Arduino would be powered in this configuration. Can somebody help me on this point?
thank you,
alex