arduino project

- Countdown timer with Display (does not display the timer countdown at first)

- Time Value for timer Random between 2 values set by user via keypad at start

- Once the timer reaches 0, buzzer sounds for 10s, then timer restarts (Infinite Loop)

- Keypad to enter a defined 4 digit code that will activate the display and show the countdown timer counting down for X amount of time

- Keypad defined 4 digit codes that reduce the remaining countdown timer by X amount (depending which code is entered) but that, once countdown completed, doesnt impede the regular loop of the randomized timer)


1- i flip a toggle switch, the circuit turns on

2- the LCD display asks me to input min value (in minutes)

3- then the LCD display asks me to input max value (in minutes)

4- The LCD asks for the codes, one by one (LCD, 1min, 5min, 7min)

5- when i confirm the min/max values, and all the codes, the timer starts (random value chosen between the min/max values set at start)

6- when the timer reaches 0, buzzer for 10 seconds

7- Loop the entire process infinitely (do not ask for min max values, loop the timer circuit using the same min max values but another random value between min/max)

8- *** during the countdown of this timer, I do not want the display to show the time remaining***

9- At any point during the circuit, I want to be able to enter a 4 digit code which will trigger the display to show the timer indefinitely, even after the timer ends and the loops a new timer. I want, when this code is entered, that the display show the timer time until i close and restart the circuit.

Skills: Arduino, Electronics, Microcontroller, C Programming, C++ Programming

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About the Employer:
( 1 review ) Montreal, Canada

Project ID: #23483951

Awarded to:


Hello, The project looks quiet simple. I'll be able to provide code within one or two days maximum and testing ,support and optimization if needed.

$50 CAD in 2 days
(9 Reviews)

42 freelancers are bidding on average $150 for this job


Dear sir I have more than more than 10 years experience in embedded systems design i read the project description and i can do it for the proposed budget please message me so that we can discuss

$88 CAD in 1 day
(218 Reviews)

Hi, I hope you are doing well. I have done similar projects. - Countdown timer with display (7 Segment LCD LED) - Buzzer Sound - User Input using keypad I can execute this project in less possible time. Looking For More

$200 CAD in 2 days
(94 Reviews)

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(59 Reviews)

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(43 Reviews)

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(58 Reviews)

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(41 Reviews)

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(16 Reviews)

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