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## Components and supplies

## About this project

In this project we measure an unknown resistance using Arduino Uno and a simple voltage divider circuit.

### The voltage divider

With voltage divider we can take a portion of input voltage as output. This is achieved by connecting two resistances in series connection. Because they are connected in series, the same current I runs through them:

If we solve this equation for Z2 we have:

If all values apart from Z2 are known, we can compute the unknown resistance using Vout.

### Complete circuit

### Testing

### Resistors with large values

This setup is effective as long as Z1 is close to Z2. The readings are not accurate for large values of Z2 compared to Z1:

## Code

## Schematics

## Comments

#### Author

#### Published on

February 17, 2020#### Members who respect this project

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