ESP32 Tutorial 55 - How to measure 12V, 24V or 100V DC voltage

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

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@flakmoppen 4 күн бұрын

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 4 күн бұрын

You are welcome. Glad you like them!

@comandit 8 ай бұрын

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

@muhamadandymaulana Ай бұрын

Thanks for the explanation, very helpfull for me😊

@robojax Ай бұрын

My pleasure 😊

@muhamadandymaulana Ай бұрын

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

@oapke124 8 ай бұрын

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

@jrapplefan2231 8 ай бұрын

Also, what is the precision of the reading ?

@robojax 8 ай бұрын

10mV

@ТаалайбекУтуров 2 ай бұрын

will it work for 220V or higher?

@muhamadandymaulana 4 күн бұрын

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 3 күн бұрын

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 3 күн бұрын

@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 3 ай бұрын

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

@florianosabatini4016 3 ай бұрын

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

@robojax 3 ай бұрын

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

@florianosabatini4016 3 ай бұрын

@@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?

@jrapplefan2231 8 ай бұрын

Could we read AC voltage with a small different circuit ?

@robojax 8 ай бұрын

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