Re: [Amps] Auto tune conversion using stepper motors?

[Markku Oksanen <ww1c@outlook.com>]

Hi
Thanks for the ideas. 

Does anybody have a good idea how to find the "zero point" on vacuum cap 
without adding a potentiometer for position feedback?  I was thinking about 
reflective optical sensors and setting them up so that when the cap opens up 
totally, the gap between the sides of the capacitor are detected as a drop of 
reflection .  These sensors are really inexpensive, only thing is how to 
position them correctly and accurately.
Markku

                                          
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