ESP32 Tutorial 55 - How to measure 12V, 24V or 100V DC voltage | SunFounder's ESP32 IoT Learning kit

[@comandit]

Like + comment because this guy personally helped me with a problem on a +2y video, what a chad

[@flakmoppen]

This series is just amazing. I bought a esp32 board like yours a couple of weeks ago, and your videos have been an incredible source of information. Many thanks my dude.

[@robojax]

You are welcome. Glad you like them!

[@mrsteve7521]

Thanks so much😊

[@robojax]

My pleasure!

[@oapke124]

Nice video bro! It helps a lot. Can you please publish the code asap, where can i find it?

[@jrapplefan2231]

Also, what is the precision of the reading ?

[@robojax]

10mV

[@muhamadandymaulana]

Thanks for the explanation, very helpfull for me😊

[@robojax]

My pleasure 😊

[@muhamadandymaulana]

​@@robojaxhow to calculate the value of resistor R2 with a program in arduino ideas

[@muhamadandymaulana]

I want to ask, why when tested the voltage read on the sensor is the maximum voltage?. I tested the sensor with a 5V voltage source, why does the sensor read 100V?.

[@robojax]

if we don't know what is the maximum, then the board will burn if you connect higher voltage. So have to know the max voltage to put proper resistor.

[@muhamadandymaulana]

@robojax What I mean here is, why is it that when I give a power supply of 5 V, why does the sensor read a voltage of 100 V?

[@florianosabatini4016]

Hi, I have 5 Volts and I need to reduce to

[@florianosabatini4016]

I forgot to say that the source of the 5 volt is an UPS of 25 volts already reduced with a voltage divider.

[@robojax]

Hi, Even though I have explained it fully, but you can use this calcualtor ohmslawcalculator.com/voltage-divider-calculator#google_vignette

[@florianosabatini4016]

@@robojax I know it and the relative values of resistances are correct. I’m only asking about the absolute values of the resistance. Is 1000 ohms to low to use as R1 or it could be ok?

[@ТаалайбекУтуров]

will it work for 220V or higher?

[@jrapplefan2231]

Could we read AC voltage with a small different circuit ?

[@robojax]

if you can convert AC to DC with some circuit, yes it should work.

[@ibrahimaliabbasi5188]

nice

[@rtaufiqer]

is there any updates fotr codes

[@robojax]

Hi, I am sorry for the delay, the link to the code is added in the description.

[@Thor-dy1xu]

Where' the 'code' ?

[@robojax]

Will be published soon.