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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.

Kĩ năng: Arduino, Điện tử, Vi điều khiển, Lập trình C, Lập trình C++

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Về Bên Thuê:
( 1 Nhận xét ) Montreal, Canada

ID dự án: #23483951

Được trao cho:


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 trong 2 ngày
(9 Đánh Giá)

42 freelancer đang chào giá trung bình $150 cho công việc này


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 trong 1 ngày
(218 Nhận xét)

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 Thêm

$200 CAD trong 2 ngày
(94 Nhận xét)

Hello, I am Anthony from Sri lanka. I have 7 years of experience in the field of electronics. Currently I am working as a full time freelancer and I have state of the art electronic lab. Why you should h Thêm

$140 CAD trong 7 ngày
(59 Nhận xét)

Hello sir, I have experience in designing electronics circuits and can program all kinds of microcontrollers. You can discuss your project with me in chat and we can move on right away. Thank you.

$150 CAD trong 15 ngày
(43 Nhận xét)

I am an engineer and have done many programming projects including c and c++. You can discuss more details of you arduino project in chat. Thank you

$140 CAD trong 7 ngày
(58 Nhận xét)

Dear client, Nice to meet [login to view URL] are a small company, based in China. We have been working as a firmware and hardware designer for 6+ years. We had developed several similar projects using the various microcontrollers Thêm

$140 CAD trong 7 ngày
(20 Nhận xét)

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$250 CAD trong 7 ngày
(12 Nhận xét)

Hello. I have rich experience about Arduino. I can do your project. Regards. //////////////////////////////////////////////

$100 CAD trong 7 ngày
(41 Nhận xét)

hello i am a computer engineer,i have masters in computer engineering,i have experience for more than 8 years in arduino and electronics,i can make to u the required count down timer using arduino,i have all the requi Thêm

$222 CAD trong 4 ngày
(31 Nhận xét)

We are a team of Electrical and Electronics engineers and we are Excellent in the following areas: • Embedded C Programming. • VHDL/Verilog • Microcontroller like Arduino, Raspberry Pi, FPGA, AVR, PIC and STM32. • ID Thêm

$250 CAD trong 7 ngày
(29 Nhận xét)

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$250 CAD trong 3 ngày
(16 Nhận xét)

Hello, I'd be able to do this work. check my profile for sure, if I take your project, it will be done soon...

$300 CAD trong 7 ngày
(40 Nhận xét)

Hello! Nice to meet you! I have read your project carefully. I am very interested in your project. I am a Microelectronics and Automation engineering expert. I have a lot of experience in IoT technology. And I have Thêm

$250 CAD trong 7 ngày
(8 Nhận xét)

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$100 CAD trong 3 ngày
(5 Nhận xét)

I am an embedded systems developer with experience in avr and arm microcontrollers. I have worked with atmega programming in C .I can help you with your project . Just contact me for details.

$180 CAD trong 5 ngày
(9 Nhận xét)

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$200 CAD trong 7 ngày
(14 Nhận xét)

Hello sir I am professional electrical engineer having specialisation in Electrical control systems I have vast experience in Micro controllers I have done various projects in arduino I will provide you with quality wo Thêm

$90 CAD trong 2 ngày
(10 Nhận xét)

Dear Employer, I am an Electronics Engineer Programmer and also a PCB designer. I can do this project. I am an expert in Arduino. I can complete this project within 2 hours. Thank you for spending your time in my appli Thêm

$50 CAD trong 1 ngày
(15 Nhận xét)

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$140 CAD trong 7 ngày
(10 Nhận xét)

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$140 CAD trong 7 ngày
(3 Nhận xét)