Countdown Timer

I'm looking for someone with expertise in electronics, arduino, micro controllers, etc.

To design a circular LCD/OLED (or similar) countdown display timer.

The timer must only countdown days automatically, not hours, minutes or seconds, and be operated by a battery that you would get in a digital wristwatch or car key fob (or smaller). It needs to be simple and basic in its functionality. If I want to set the timer to countdown from 10 days then I push the + button until I get to 10 and if I leave it for 3 seconds it will set on this number. It only requires 3 digits so the max number of days is 999. When the timer reaches 3 days the display changes colour from green to yellow and when it reaches 0 days it changes from yellow to red and flashes. When it goes past zero the next day should be -1, then -2, etc.


1. Size - it should be 1.5 inches diameter, 2 inches max, and as thin as possible. How thin this can be design will decide whether to proceed, or not.

2. Ideally it would be a touch screen, similar to how an air fryer is operated.

3. The back would have a magnetic case so it can attach to metal surfaces.

Taidot: Arduino, elektroniikka, Mikrocontroller, Piirilevyn asettelu, sähkötekniikka

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Tietoa työnantajasta:
( 0 arvostelua ) ENNISCORTHY, Ireland

Projektin tunnus: #23659335

32 freelanceria on tarjonnut keskimäärin 503$ tähän työhön


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.

$600 AUD 20 päivässä
(45 arvostelua)

Greeting there , I could absolutely help you with your Arduino based countdown timer project i am very excited work on your project and help you get it done in short time About my experience : [login to view URL] Lisää

$500 AUD 5 päivässä
(47 arvostelua)

Dear client. I'm an Electronic Engineer with 10+ years experience in embedded system and electronic design, PCB layout design, firmware programming, routing, assembly, and control system fields. My main skills are bel Lisää

$500 AUD 10 päivässä
(23 arvostelua)

FREELANCER RECOMMENDED ------------------------------------------------------ Can help... I am a Arduino and Embedded systems Expert... Lets Start! Please start a Discussion with me and we can get started from there... Lisää

$500 AUD 7 päivässä
(9 arvostelua)

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 have checked the attached picture as well as the video file and i can make to Lisää

$444 AUD 5 päivässä
(32 arvostelua)

Hi, I've just finished a similar project with very good review and worked on two other projects with timers and LCD with mass production accuracy. I am an expert in Arduino, PCB design and embedded systems hardware d Lisää

$400 AUD 10 päivässä
(10 arvostelua)

Hi, I have more than 4 years of experience in Arduino, PCB Desing, and Robotics projects. I have read your project description and I believe my experience can help you. As an Electronics Engineer and Robotics Enthusia Lisää

$600 AUD 6 päivässä
(7 arvostelua)

Hi sir, For this we have to use RTC because internal timers of any Microcontroller is not accurate, and we can use ATTiny 85 as a controller to make the circuit small. I can do this circuit and complete it in less than Lisää

$300 AUD 1 päivässä
(17 arvostelua)

Hi I'm Matt from Warton Circuits Ltd located in north-west UK. I've have 20 years of industry experience in microcontroller development and have a small-scale PCB prototype facility (Essemtec SMT stencil printer, JUK Lisää

$650 AUD 7 päivässä
(3 arvostelua)

"Hi, Hope you are doing well! Thanks for sharing your project requirement with us. It will be our great pleasure to work on your project. I have checked your requirement, yes we can do it, because we already work on si Lisää

$250 AUD 7 päivässä
(8 arvostelua)

Hello, I am interested in your project and I hope to help you realize it, I am passionate about electronics and embedded development and I hope to share with you my knowledge and experience. I can do this work in 5 da Lisää

$250 AUD 5 päivässä
(2 arvostelua)

Hi. I have the solid experience in embedded development and PCB using Allegro, Altium and Eagle for 10+ years. For example, STB, DVB-T2 modulator, Microwave Transceiver, GPS tracking system, UHF Data transceiver etc. I Lisää

$500 AUD 7 päivässä
(2 arvostelua)

Note: Please Click “CHAT” then simply leave a simple message like “HI THERE” . We will respond quickly as possible. Good Day! We are a team of Architects, Engineers, Artists, and Animators here. I am an Arch Lisää

$250 AUD 1 päivässä
(1 arvostelu)

General message: Dear Sir, Greetings from Turkey. I hope you are good. Let me introduce me. I'm Electronics Enginner who have 19 year experience. My experience is related to power electronics, hardware design, Lisää

$250 AUD 7 päivässä
(1 arvostelu)

Hi, I can handle the project because i did alot of projects like this one before using arduino. The project where made for controlling stepper motors, bluetooth communication, controlling eletrical hot plate and other Lisää

$250 AUD 14 päivässä
(2 arvostelua)

Hi based on your project description i will recommend you to use e paper [login to view URL] consumes least power and so the device can work on battery for days I have worked with the e paper display so I can provide you Lisää

$600 AUD 30 päivässä
(3 arvostelua)

Hello I am pursuing my Master of Science in UCC, Cork, Ireland. I am an Electronics Engineer by profession and degree. I have experience of more than 3.5 years as Embedded Engineer and we can meet and discuss about th Lisää

$555 AUD 25 päivässä
(2 arvostelua)

Electronics Firmware Engineer with experience in complex systems development with practicing in Embedded Systems, Programming Firmware, C, C++, Linux, Python and IoT gateways. Let's Discuss Further.

$750 AUD 15 päivässä
(0 arvostelua)

I can make you this, but the image and video you have attached are too fine. it means they have professional casings and all that. I can write you the code, design you the pcb and make you 2 to 3 boards of this thing. Lisää

$700 AUD 5 päivässä
(0 arvostelua)
$555 AUD 10 päivässä
(0 arvostelua)