Quote:
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Originally Posted by WizardOfAz
Piher makes a continuous rotation pot, the N15 series. Spec sheet here:
http://www.piher-nacesa.com/pdf/n15.pdf
Mouser sells them (mouser.com). For example, mouser part# 531-N15TV-100K. They only do 340 degrees, so you need two of them to get 360 coverage.
The advantage over the optical sensors is
- direct readout (no CPU load)
- easy to program
- cheap @ $3
The disadvantages are
- poor accuracy (3% = 11 degrees)
Bill |
Actually, there's another disadvantage of these Piher potentiometers - you can't get them from any of the permitted suppliers (newarkinone, future-active, digikey), so I guess you can't use them. Does anybody know of any "out" for this? Does every little $2 or $3 part I might buy at some local electronics store for the robot also have to be obtainable from the listed suppliers? What would seem reasonable to me is that there be a lower limit, maybe $5 or $10 dollars, under which you could buy electronics parts from anybody.
It's too bad if we can't use these Piher pots (for example). They are less than $3 each and make great continuous rotation sensors. I have not yet found anything similar from the listed suppliers.
Bill