Quote:
Originally Posted by yonisav
|
You could try the limit switches that you have... I think they could work but you have to be careful about movement in both directions yielding the same push...
The UK switch would work fine... but don't forget those are from the UK and it might take awhile to get them... plus shipping... 3 weeks left....
There are a number of solutions to this... i agree that photo sensors would work well too... these would be more expensive (the ones we used on our robot were probably $50-$60 a piece ) but you could make them yourself... lots of DIY type photo sensors could work.
Another route you could take is to encode the motor that is driving your elevator and choose positions... more programming .... but an elegant solution.
Another idea is a string potentiometer like this one from AndyMark
http://www.andymark.com/product-p/am-2618.htm
Definitely you want a pin or a tab on the elevator that activates any kind of limit switch. pins work nice.. could be something as simple as a bolt that sticks out of the frame.
good luck