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Is a RC snubber required when using the pi with a relay?

I am hoping to use raspberry pi to switch on and off a heating lamp and an aquarium pump via a relay switch. Both devices are plugged into 120V AC normally. The relay tutorials online seem to be ...
0
votes
0answers
84 views

L298N not working anymore

This is an image of how I had it routed up, it was working just fine until I attempted to add a rocker switch. I used the 2 pin on/off rocker switch that came with my smart car kit (https://www.ebay....
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0answers
27 views

raspberry multiple magnetix switches

I have a Pi 2 and I would like to monitor the state of 3 magnetic switches. All of them are in close distance, no more than 3m of cabling for each one of them. How can I connect them to monitor their ...
5
votes
4answers
3k views

How can I combine many inputs on one pin?

Forgive my naivety but I seem to lack a vocabulary for the whole electronics domain... I'm interested in building something to measure wind direction. Inspired by this design I would like to build a ...