How to measure voltage using microcontroller

Development Boards MicroMod
1

Hi there,

How to measure voltage using microcontroller? any tutorial? book? sample projects? codes et ct? Thanks

Regards

2

Voltage range, accuracy?

Leon

3

leon_heller:
Voltage range, accuracy?

Leon

The pH electrodes outputs voltage signals in the order of milimeter. I want to be able to detect that.

But in general I want to know how to measure just voltage using codes and controller.

Thanks

4

Most AVRs have an ADC, it’s quite easy to use.

You’ll need an amplifier for the output from a pH sensor.

Leon

5

This thread has some links to op-amp designs for pH probes. The probes are very finicky due to their 10MOhm+ resistance.

http://reefcentral.com/forums/showthrea … id=1496284

6

theatrus:
This thread has some links to op-amp designs for pH probes. The probes are very finicky due to their 10MOhm+ resistance.

http://reefcentral.com/forums/showthrea … id=1496284

Thanks all for responses. However my original question still remains.

How to measure voltage using AVRs? Thanks

7

You use the ADC. It should be covered in the datasheet.