4.5" flex sensor measuring methodes?

Other Hardware Sensors
1

Hello,

I have a project that includes a 4.5" Flex sensor from sparkfun and that sensor is changing resistance according to bent angle from 13KOhm at 0 degrees and 23KOhm at 180 degrees (fully bent)

I tried using the simple voltage divider method (that was suggested by sparkfun) to measure the bent level but the problem if that it only gives mt about 120 resolution points out of the 1023 that the arduino can give.

How can I read the data off of it better with more resolution points(260 or more) with a simple method(that doesn't require alot of calibration) assuming the Wheatstone bridge method is complicated?

2

How about a link to:

the simple voltage divider method (that was suggested by sparkfun)

3

outsider:
How about a link to:

I think it's pretty straight forward but here anyway http://bildr.org/2012/11/flex-sensor-arduino/

4

Perhaps you should look at the datasheet (always a good place to start) and then do some self-directed education on op amps so you understand what each of those op amp circuits is doing, and which one might help you.

PS: another approach is to find similar sensors by different manufacturers, and look at their datasheets. They might have additional recommendations, or better explanations, etc.