I have a Qi charging module and I want to light up a higher-power string of LEDs when my phone is charging through it.
The module has a blue status LED to show it's charging, which I think is where I would hook into. My question is, could I use a transistor or relay where the status LED is to switch on my string of lights. Or, should I use some sort of current monitoring on the coil instead of relying on the status LED?
I'm kinda new to hobby electronics so sorry if I've made some silly assumptions along the way.