How to make Countdown Timer using Arduino and 16x2 LCD Display

How to make Countdown Timer Relay | Without RTC Timer using Arduino and 16x2 LCD Display

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Muhammad Ansar
[phone]

[mohmmadismail]

Ansar bhi ap k tamam video zabardast hai urdu main hony ke Waja sy to bhot he zabardast hai

[weeb...senpaii]

Please help all the 3 files are not getting in the audrino...it is showing that only .ino and some other type of files can only be transferred in audrino

[ainglieur]

waalaikumsalamm
i like this video bro...
good job 👍👍

[leandromaracana]

Hello sir..
If using liquid crystal I2c, diagram please..

[naveenvaid]

thanks sir yours video and your code is good. i really work from it. but i face a problem when i write a program of lcd display 16x2 and command use lcd.clear(); with delay my lcd display digit are flickering what the problem plase tell me thanks in advance

[abhyudaythorat]

mixed model AVR2.DLL failed to authorize - Missing or invalid Customer Key.. [DUINO1]
DSIM model LCDALPHA.DLL failed to authorize - Missing or invalid Customer Key.. [LCD1]

These errors are not allowing the simulation to play.. what to do??

[utkarshpal]

bro how can i add a light sensor with led in it (means led turns on when it detect light in close box) ??

[chiranthmurthy]

Hi bro
I made this timer and I have encountered with new problem it worked well for one month after few days of continuous usage it automatically triggers and makes beep sound continuously without pressing start and I have to restart the device every time what should I do ?

[mohammadjamal]

Assalamualaikum ansar Bhai mujhe timer aur temprecher controller ak hi board aur display me banana hai.keya ap meri madad Kar sakte hai ki ye kaise banega

[童洋-sb]

Thank you for sharing your code, I just have simuliar project which needed it. You help me a lot.

[weeb...senpaii]

Aurdrino file mein dikha raha hai ki .cpp wali and .h wali files nhi open hongi help

[somnathdey]

Thank you sir, Arduino Nano use karke ek bana lia, ab Subha Subha fan bandh karne ka paresani khatam ho gaya. Ye timer 7 segment LED. Display ka banaiye pls.

[rcpsng]

selamun aleykum. I could not set the buttons with the LCD Keypad Shield. can you make an arrangement for me?

[mirulmanan]

How can i use the timer portion just to switch on a lamp and leave it on for 30 secs or more(preferably adjustable from the code only) and automatically switch off after 30 seconds

[MuhammadHaris-czel]

how to change the coding so that the countdown keeps looping up to 5-6 times

Thankyou 🙏🏻

[asadulhuq]

Thank you for your excellent project. I have a question. Please answer.
What is the function of the following lines (number 39 and 51) in your .ino code-
39 tdown.setInterval(print_time, 999);
51 void tdownComplete() ?
Thanks.

[divyankjain]

sir in my pc the timer is starting from 1:55, I want it to be on 30 sec from starting itself

[rajeshkumar-kyqx]

"Countime.h" no such file or directory, always show at the time of compiling.kindly suggest me, what I do to solve the problem.

[nguyenphuongnam]

what is flag1, flag2 in this code ? Who can help me ?

[jinnatkawajoodofficial]

Sir mery pass 2 energy meter me chahta hoon k 15 days aek meter run ho aor 15 days 2nd energy meter. Kia ye timer kaam dega.