Electronics > Beginners

HOW TO SENSE 12 VOLT DC VOLTAGE USING MICROCONTROLLER?

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Raj:
Here's one for 12v...Don't use it for 24 volt input (the zener will prevent anything from getting damaged but still don't...it's unideal)

Raj:
Here's one for upto 24 volt reading,but you can't use it for 12 volts unless you use analogue to digital converter though it won't get damaged from 12 volts,it's the safest choice for you.

I think implementing anything that can be done in software is better than hardware implementation.

What microcontroller are you using?

BravoV:
Raj n Kumar, why Indians love to use eyes blinding text all the time ? Not only you two, but I have seen too many at various forums as well.

Is it a cultural thing ? As common netiquette, its like shouting out loud when talking, everytime.  :-//

Sudo_apt-get_install_yum:
You could use a voltage divider to get the correct voltage out for the microcontroller.
You could also use a comparator to see if the voltage threshold exceeds 12V.

Probable the easier of the two is the voltage divider.

Not sure if you’re just exited but your caps lock is on ;)

Zero999:

--- Quote from: BravoV on July 06, 2018, 08:37:18 am ---Raj n Kumar, why Indians love to use eyes blinding text all the time ? Not only you two, but I have seen too many at various forums as well.

Is it a cultural thing ? As common netiquette, its like shouting out loud when talking, everytime.  :-//

--- End quote ---
Perhaps their love of eye burning text is linked to their taste for mouth burning spicy food?

Anyway, I recently posted this schematic in another thread. It converts a voltage ranging from 10V to 15V to 0V to 5V, which can be read from an MCU ADC pin.

https://www.eevblog.com/forum/projects/mesuring-a-12v-lead-acid-battery/msg1644677/#msg1644677

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