How to Make a Digital Voltmeter using Arduino

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Connections between lcd display and arduino board:
* R1 100kohm Resistor
* R2 10kohm Resistor

- LCD RS pin to digital pin 2
- LCD Enable pin to digital pin 3
- LCD D4 pin to digital pin 4
-LCD D5 pin to digital pin 5
- LCD D6 pin to digital pin 6
- LCD D7 pin to digital pin 7
- LCD R/W pin to ground
- LCD VSS pin to ground
- LCD VCC pin to 5V
- 10K resistor:
- ends to +5V and ground
- wiper to LCD VO pin (pin 3)

Thanks to Razib Shahadat for sharing

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You can check out pcbway they give christmas coupons and gifts with every pcb order:)

Hacktuber

Great video! how do we modify it to measure milivolts ?

grgndlkvdnv

Only voltmeter can we make a multemeter?

PARALLELPEOPLEAKSHAYB

Hi,
Nice project 👌👌👌
How to add time ?

editor_akashmahanor

would be nice to see the parts & craft for the small power supply at the end

MrPafleouf

Hi, Sir. How are you? Sir. if I need to check high voltages? it's possible? thank you. Subscribed.

drsf

what is the 10K resistor attached to the V0 pic and +5V and ground?
10K resistor:
- ends to +5V and ground
- wiper to LCD VO pin (pin 3)

Bryantleon

the voltmeter you used at the last to control the voltage can I buy it please replay

pranaydhande

when i complmile the code it shows lcd was not declare in this scop what can i do?

thinkdifferent

i take a looked your code ... you display voltage once per three seconds ... very slow ...

ivoirmanov

Bro, the volt reading from an acid lead battery is wrong. Tell me why

calvinquidato

But why? Does there exist even 1 person in the world who has an Arduino and not a multimeter?

DadSkool

which software you use to upload pcb on pcbway

mahad

Wait where is the arduino code for this

CustomdPrintingU

Where is the code man
For that arduino

-_HerezGrishmarWienanta

If we have to design for range upto 100v then
What modification to do

siddhantdas

my value is fluctuating after decimal...you have any solution for that

meenakshimaurya

3:56 what is it? (Where i can whatch her video?)

Ak._Singh

How to make this 2 in 1? For clock and volt meter in 1 display? Please reply

yudhistiradwika

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