Electronic Count Down Timer with LED Segments

I need a simple cound down timer design.

It will consist of 5 + 2 + 2 +2 digits. DDDDD HH MM SS

See a simple mockup around it in attached picture.

* Design around Atmega328P processor (arduino compatible)

* Cheap simple 8 char LED segment. 20-30mm high. Choose the simplest and cheapest

* Built in RTC with backup battery, so time and counter does not reset when main power is removed

* 2-3 buttom 90 faced upwards to set time and handle the menu

* Function will be. Set current time and date, set the count down time in year and days. After set, counter will correct it

to days in total and then start counting down showing DDDDD HH MM SS.

* USB mini on the side for main power.

* Function to dim the led segmentw from very weak to very bright.

* PCB design in Eagle [url removed, login to view]

After completed project I get pcb design, component and software files.

I want you to test this and really guarantee it works before we finished our project.

Suggest we have a open chat with Q&A during the project.

Project duration 3-4weeks

Taidot: Arduino, sähkötekniikka, elektroniikka, tuotesuunnittelu, Ohjelmistokehitys

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Tietoa työnantajasta:
( 10 arvostelua ) LINKÖPING, Sweden

Projektin tunnus: #13079914

Myönnetty käyttäjälle:


Hello dear I have experience in designing electronics circuits and can make your project. I will make your project practically on breadboard and will provide you circuit, code and PCB design along with gerber files. I Lisää

kr2500 SEK 10 päivässä
(23 Arvostelua)

34 freelanceria on tarjonnut keskimäärin %project_bid_stats_avg_sub_26% %project_currencyDetails_sign_sub_27% tähän työhön


Hi Sir I am an expert electronics engineer with more than 8 years of experience in development of embedded systems I have read the details and I am sure I can do it for you Please review my profile and see the revie Lisää

kr5000 SEK 15 päivässä
(214 arvostelua)

Whatsapp: +92 321 6624970 I am an Electrical Engineer having specialization in Electronics and Control, teaching at Electrical Department FAST National University Pakistan. I am also persuing my MS degree in Electr Lisää

kr3555 SEK 3 päivässä
(240 arvostelua)

Hello, I am an Electronics and Embedded system developer. I have experience in Digital and Analog electronic design and Matlab.i have expertise in PCB design. Kindly check my profile. Reply me back and will discuss the Lisää

kr4500 SEK 10 päivässä
(65 arvostelua)

Hello, Good Morning. We will design and prototype the required hardware. Please feel free to contact us. Best Regards, Shahbaz.

kr5000 SEK 20 päivässä
(49 arvostelua)
kr4736 SEK 10 päivässä
(40 arvostelua)

Hello Dear, We are a team of experts with a cumulative experience of more than 50 years in the field of embedded systems and prototype development. I assure you the best solution for your work. Regards Ch

kr3555 SEK 30 päivässä
(34 arvostelua)

Hello, i have a 50-60% equal project that work, so i can use knowledge. Here are my proposals: My name is Vladimir. I've been worked in Olimex LTD for 3 years ([url removed, login to view]). I have a big experience in prototyping sc Lisää

kr4000 SEK 20 päivässä
(15 arvostelua)

Hi, We are an Embedded Solution providers based in Surat, India. We develop and manufacture various Embedded/Power Electronics products. Following are the products we have designed and manufactured. All of our pr Lisää

kr4444 SEK 11 päivässä
(19 arvostelua)

Hiya. Nice project, a bit low budget. Definitely wrong part selection. I'd suggest using a cheap STM32F103, which has hardware RTC + battery backup, making parts list for this project basically just the MCU + po Lisää

kr9922 SEK 21 päivässä
(5 arvostelua)

Hello. Do you want to have this device fully Arduino-compatible? (So USB connector will be used for uploading of the code) Or you will use external programmator, and the USB used for the power lines only? I can Lisää

kr1900 SEK 15 päivässä
(46 arvostelua)
kr5000 SEK 10 päivässä
(13 arvostelua)

Hello. Im designing different electronics devices, mostly based on avr, arm MCUs and boards with them like arduino, stm-discovery etc. (autopromotion^)) What is "arduino compatible"? Do you want to use arduino boa Lisää

kr3998 SEK 20 päivässä
(25 arvostelua)

Hello I'll guide you and give you full help in all things in building your prototype from designing to manufacturing. I am Electrical Engineer and interested in your project. Please tell me about your time limits. Lisää

kr2000 SEK 18 päivässä
(23 arvostelua)

Hi Sir, We have read your project, we are professional circuit designers and PCB designers. We can do it for you. We do our projects with full quality assurance We offer our services at very feasible rates. Pl Lisää

kr1600 SEK 13 päivässä
(31 arvostelua)
kr4666 SEK 10 päivässä
(23 arvostelua)

dear Sir i can do this project. I can assure you that if you work with me once, you will always work with me for these kind of projects.

kr2222 SEK 10 päivässä
(17 arvostelua)

hello,I am an electronics and communication engineer. I have good experience of embedded systems and PCB Design. I can Write the codes for functioning and test the systems in my place. design the PCB and send to you th Lisää

kr1777 SEK 7 päivässä
(5 arvostelua)

Hi Sir, I am interested and would like to do it. Thank you.

kr1600 SEK 7 päivässä
(10 arvostelua)
kr3333 SEK 10 päivässä
(3 arvostelua)
kr2000 SEK 7 päivässä
(3 arvostelua)