Hi,
I need help with a STEM project for my daughter.
we want control an electro magnet using an IR sensor.
the electro magnet will hold up a sliding door until the beam is broken, the the door will release and fall.
it would have to be portable and run from a battery pack.
the electro magnet can be small, it won't have to hold much weight.
the sensor would need a range of less than 4 inches.
I am a novice, and really don't know where to begin.
please, any help would be great.
thanks.
