The Net's glory is also it's curse, there are so many conflicting wiring diagrams, some old some new. Is there a 2020 consensus on the best way to install limit switches? i.e. normally open, normally closed, installing capacitors for buffers, looping positive, looping negative and on and on. System is Arduino UNO, grbl 1.1h, Candle 1.1.7. Any comments appreciated. A wiring diagram would be very helpful.