How to Make an Arduino Ohm Meter

[@mjstow]

Fantastic, and exactly what I was looking for. Many thanks.

[@youpattube1]

Just the right pace for understanding.

[@dr.mithilfaldesai3561]

Sir, Very simple to understand, thank you. Can I have a program to measure a real time resistance, input voltage, time stamp. How I can export to CSV file. I am using Arduino Nano

[@whataidendoes1814]

Can you add two reference resistors? Like one=1000 Ohm and the other=1000000 Ohm. If you do so, can you accurately measure any unknown between 1000 and 1000000 Ohm?

[@99naitik]

Hi . Can this work with a 1 ohm resistor as known and a heating element of unknown value. ?

[@tyronwood2231]

Any research on this?

[@rvnt5561]

Hi, I have a question. How do i do this but using a 24V dc external psu? How do i get arduino to link with 24V Dc?

[@hemanreddy3562]

What ia the range of the resistor it can measure and what is the sensitivity of the circuit

[@allersvp]

DO YOU THINKN IT CAN WORK AS MILLIOHM meter like 200- 900 milli ohms?

[@sdj7122]

Is this safe to use 24/7 ? I was thinking to build it up in a car for some project with LCD display. But resistors are very hot.

[@qzorn4440]

nice project. 🥳 thanks. 🙂🥞☕

[@tyronwood2231]

Followed exactly and I just get errors with my uno

[@macrafy1976]

Great Tutorials!!!

[@Circuitbasics]

+Rafael Villalobos Thank you, glad you like them!

[@mattiabalestreri5535]

What if I want to read variable resistance between 1k and 16k? Is it possible to use a single reference and obtain a good precision?

[@DegreeStudio]

How to use AREF as internal 1.1V voltage to measure 100 Ohm resistors with divider ? Divider: R1=100 Ohms and R2 = ~109 Ohms and Vin=1078mV=AREF_pin when analogreference(internal) getting 1023 adc reading, this means Vout is out of reference ? when i switch R1 to 250 Ohms then adc starts to read Or i cant use AREF pin as Vin ?

[@chinhuan99]

Thanks for your tutorial! However, I'm confused with the Vout. Vout is the voltage across the known resistor, isn't?

[@joealexzander7270]

pro trick : watch movies on flixzone. I've been using them for watching loads of movies recently.

[@troycase1833]

@Joe Alexzander yea, I have been watching on Flixzone} for since november myself :D

[@carlosvallejo4326]

Hello my friend, I have a question...How can I print the serial port resistance measures in a LCD?

[@manmanfun2]

on the site he uses.. below theres an LCD how to part

[@xsoul6838]

you could make it 0.1 ohms to 2 mega ohms in a single code

[@Brian-uq6jm]

so this is basically useless cuz you have to keep the unknown resistor value close to the known one? I thought the purpose of this was to measure an unknown resistor? If it's unknown, how do you know what to choose for the known resistor?

[@MusicGameFinatic999]

The known resistor is used because it uses a voltage division equation to solve for the unknown resistor. The known resistor can be anything, it just has to be there because that way you have a current to use to solve for the unknown resistor.

[@anouarmondir]

hi j'ai besoin le code