Jinx,

I have many suppliers and of course many kind of materials that weight
differently. but I know that all of it are 50m reels.
so I have to stick to the length method. as I say before a rubber pinch
roller encoder will do the job. now I have to find a pic counter to
translate it to digits and readable data.

Tal

-----Original Message-----
From: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU]On
Behalf Of Jinx
Sent: Thursday, September 11, 2003 4:35 AM
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [PIC]: Length measurement


> we are talking about 100" (2.6m) that fed with vynil,paper. etc..
> there is no mechanism to find how much material left so I must
> build it.
>
> Tal

If your supplier can say that there is at least a certain amount
of paper on a new roll, then do they use an odometer system
too ? Or maybe, assuming that the paper thickness is known
at the time of winding (being under factory conditions where
temperature, humidity etc are controlled), they simply measure
turns or weight

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