Sensor for linear measuring

Thread Starter

nqchanh194

Joined Jul 5, 2013
27
Hi all,

I'm studying to design a linear measuring tool like a digital calliper.
I've been considering optical encoder from Avago technology but current consumption is up to tens of mA which is not suited to my design using a battery cell.

My expectation for sensor is as follow:
-Average current consumption is 3 mA or less.
-Price: less than $10 USD.
-Resolution: 0.25 mm or less.
-Measuring range: 20 cm or more.

Hope someone give me some suggestions. Thanks.
 

alfacliff

Joined Dec 13, 2013
2,449
most mfgrs of digital calipers and micrometers use optical encoders, so there must be some out there somewhere.
 
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