Topic: What value of resistor do I need?
My wife has 4 artificial plant groups that have LED' intertwined in them. They are powered by boxes with 3 AAA batteries. Well I got tired of replacing a handful of batteries every few days or so, so I clipped the battery box and replaced it with a 5V wall wart. I used 1 15 Ohm resister, that was in-line inside each battery box per 2 LED strings, soldered in-line. Gets a little too hot for my liking, and 2 sets get substantially brighter.
I would like to use one 5V 2A wall wart to drive them all. What resistance is required to hook all 4 to 1 power supply?
TIA for any help
Ski