It's okay. I just want the others to know more about my project.I can see that you started a new thread discussing your project, instead of just your optical encoder question. Would you prefer we continued this discussion there?
About the Hall sensor, I've read datasheet of a particular one. Please refer to the attachment.
Please take a look on page 9. As you can see in figure 10, the output value is not linear at both sides of the magnet.
Therefore, if I want to apply for measuring 20 cm, I will have to use a magnet longer than 20 cm.
Is that right ? Is there any solution else for this case ?
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