PWM and resistance values.

Projects Programming
1

Hello everyone,

I'm not entirely sure if I am going down the right path with this so I figured I would bounce it around among more knowledgeable people.

Let's say I have two analog sensors that have resistance ranges larger than the instruments I am outputting to.

For instance I have a range of 0 - 300 ohms where 0 ohms = 0 degrees and 300 ohms = 300 degrees. Now let's say my instrument has a scale of 10 - 115 degrees so 10 ohms to 115 ohms is the range.

Any thoughts on how to do this? Is it as simple as telling Arduino that anything between 0-10 ohms = 10 and that anything between 115 - 300 = 115? And anything in-between is the actual value?

I don't really care about any of the values above or below that scale but finding specific sensors in the ranges I need are difficult. Most are a larger range than I need.

2

This is the Programming part of the forum, not the hand-waving, pure speculation/guesswork part.

Here, you post links to the hardware you are trying to use, and the code that you are asking about.

The Arduino doesn't know anything about measuring resistance.

3

Degrees of temperature or angle? Are you thinking of a device like a thermistor or RTD where resistance varies with temperature or something else? You have to be more specific.

4

brandonium:
Let's say I have two analog sensors that have resistance ranges larger than the instruments I am outputting to.

That does not sound as if it is correct. And I can't see any relationship between that and "pwm" in your title.

Post links to the datasheets for the sensors you have and for the instruments you are "outputting to"

...R