Looking at building a stepper system to act as an electronic cam.
Cam profile must be adjustable on the fly and have 2 inputs ( reversal points ).
My question is which arduino unit would best suit this application?
May as well ask - Has anyone done something similar???
KR
Marshall
It dosn't sound too taxing, use a UNO.
What speed do you need to update it at?
Never come across this so you might be a trail blazer.
I would start from the mechanical output requirements (torque, travel, speed, positional accuracy) and work back to spec the motor/transmission, the electrical supply required, and the driver needed to control that. Depending on the answer you may be able to use an Arduino clone with integral motor drivers, or a UNO or similar with a standard driver shield, or any Arduino with a separate driver board.
slow acting variable 'cam' using a solenoid isn't a problem
Porsche Design were working on V.V.Tt using solenoids at least 10 yrs ago.
As far as I know the only engines running V.V.T. are big diesels
If your looking to experiment on internal combustion motor there is a lot of information but search terms vary a lot
Here's a link to the 'high side'
http://www.autospeed.com/cms/article.html?&title=Camless-Engines&A=0910
and this is the one I couldn't originally remember the name
http://www.sturmanindustries.com/