Fermé

low energy timer with beeper

I need a electronic circuit powered by a small battery (i.e. CR3032) witch powers two timers. One should start, when the power button of the circuit is pressed and give an ongoing signal, when 30 days are over. The other timer should react on a passing hand (like ir-reflection on a water faucet) and give a short beep after 30seconds. The whole circuit should use cheap parts and does not need to last more than several months. The size of whole circuit should not exceed 4cm in diameter / 4x4cm in square. The smaller the better. Price of the circuit is critical, so microprocessor boards should not be used. The Project should include the Circuit, PCB layout, bill of materials and Eagle Files.

Compétences : Design de circuits, Génie Électrique, Electronique, Microcontrôleur, Mise en Page PCB

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Concernant l'employeur :
( 1 commentaire ) none of your business, Germany

Nº du projet : #19842574

23 freelance font une offre moyenne de €141 pour ce travail

shahbaz1980

Hi there, We will design the circuit with timer ICs that are very cheap. Please feel free to contact us. Deliverable of the projects will be circuit diagrams, bill of material and gerber files. Kind Regards, Shahbaz Plus

%bids___i_sum_sub_35% %project_currencyDetails_sign_sub_36% EUR en 7 jours
(52 Commentaires)
7.0
amelectronics

Hello sir, I have experience in designing electronics circuits and can develop hardware compatible smartphone and PC based apps. I also have done a lot of IoT projects and can transform your idea into a fully working Plus

%bids___i_sum_sub_35% %project_currencyDetails_sign_sub_36% EUR en 10 jours
(36 Commentaires)
6.5
Anthony989

Hello, I am Anthony from Sri lanka. I have 7 years of experience in the filed and I am very much interested in your project. Why you should hire me ? * As a full time freelancer I have my own PCB fabricati Plus

%bids___i_sum_sub_35% %project_currencyDetails_sign_sub_36% EUR en 7 jours
(55 Commentaires)
6.5
MUhammadt429i

I have long experience with 8-bit , 16-bit and 32-bit micro-controllers. I work with Microchip (PIC) , Atmel (AVR , SAM) , ST (STM) , TI (MSP) , Nordic (nRF52), and NXP (LPC) micro-controllers. I use KEIL IDE , Atmel S Plus

%bids___i_sum_sub_35% %project_currencyDetails_sign_sub_36% EUR en 3 jours
(36 Commentaires)
5.8
MElizabethp

Hello my name is Maria, I would like to work in this project, I’m an engineer with plenty of experience working with Circuit Design, Electrical Engineering, Electronics, Microcontroller, PCB Layout, I have made many PC Plus

%bids___i_sum_sub_35% %project_currencyDetails_sign_sub_36% EUR en 3 jours
(10 Commentaires)
5.4
horaciodrut

Hello, I'm Horacio from Argentina. I can help you build a prototype of this circuit, without using a ucontroller. I have some questions about operation of the circuit, so please contact me to discuss them. Best Plus

%bids___i_sum_sub_35% %project_currencyDetails_sign_sub_36% EUR en 7 jours
(5 Commentaires)
3.6
volkantozan

I am a BEng. Electrical and Electronics Engineer with 3.66/4.00 GPA and 5 years of experience in field living in Cyprus. I am specialized in: -Circuit Analysis & Design (NI Multisim) -PCB design (EAGLE, Protheus, KiC Plus

%bids___i_sum_sub_35% %project_currencyDetails_sign_sub_36% EUR en 2 jours
(7 Commentaires)
3.7
mali13175

Hello Sir I am an engineer as well as a product designer and have extensive work experience in my fields. I have designed many smart circuits before and as required i can design it just with discrete components i.e. wi Plus

%bids___i_sum_sub_35% %project_currencyDetails_sign_sub_36% EUR en 7 jours
(3 Commentaires)
2.2
antonegorov300

Hello! I am very interested in your post project. i have rich experience on it. I think this project is very suitable for me and i am sure i can give you good result . I can help you if you'd like looking forwar Plus

%bids___i_sum_sub_35% %project_currencyDetails_sign_sub_36% EUR en 3 jours
(1 Évaluation)
2.0
minienergy

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 de Plus

%bids___i_sum_sub_35% %project_currencyDetails_sign_sub_36% EUR en 3 jours
(2 Commentaires)
2.9
BEMII

Hi, I develop customer-specific products and know-how-related solutions. I’m willing to work on this project with you. Before giving any proposal I would like to have a clear discussion with you. Don’t pay too Plus

%bids___i_sum_sub_35% %project_currencyDetails_sign_sub_36% EUR en 4 jours
(2 Commentaires)
1.6
OlatWorld

Am an experienced Electrical & Electronic Circuit Designing & Simulation, PCB Designing, Consultancy of different types of Electrical & Electronic Problem. I am ready to give hardworking, reliability, flexibility & hon Plus

%bids___i_sum_sub_35% %project_currencyDetails_sign_sub_36% EUR en 2 jours
(1 Évaluation)
1.8
temosh50

I can. Finish and carry out the task...definitely

%bids___i_sum_sub_35% %project_currencyDetails_sign_sub_36% EUR en 3 jours
(0 Commentaires)
0.0
kwikmatt

I'm an Electronic Engineer with years of experience designing, building and repairing digital and analog systems. I specialize in sequential, segmented and timed systems. As well as converters, inverters and so forth. Plus

%bids___i_sum_sub_35% %project_currencyDetails_sign_sub_36% EUR en 10 jours
(0 Commentaires)
0.0
egefeyzioglu

I will provide you with an extremely low cost but quite precise timer circuit that doesn't make use of any RTC chips that increase cost. You will be able to fine tune the circuit by using the trimpot.

%bids___i_sum_sub_35% %project_currencyDetails_sign_sub_36% EUR en 3 jours
(0 Commentaires)
0.0
ecotronic

Hi,Sir,I can help you to finish [login to view URL] project must focus on the power consuming, i have instrument to detect this and to solve your problem. I am in ShenZhen where can offer you cheap components, build your dream, I Plus

%bids___i_sum_sub_35% %project_currencyDetails_sign_sub_36% EUR en 7 jours
(0 Commentaires)
0.0
AylinRetro

Hello. I have experience in circuit design and I can help you in your project. If you have any questions please ask. Regards

%bids___i_sum_sub_35% %project_currencyDetails_sign_sub_36% EUR en 7 jours
(0 Commentaires)
0.0
etalhak

Hello, I study electronics at Politecnico di Torino and I can help you with such a circuit design. I have done a couple of applications before so making another one will not take too much effort. Just let me know all t Plus

%bids___i_sum_sub_35% %project_currencyDetails_sign_sub_36% EUR en 7 jours
(0 Commentaires)
0.0
LongNV7

Hello. I have done projects like yours before and I feel my ability to meet my work experience is 4 years with PCB. let me help you Thanks you

%bids___i_sum_sub_35% %project_currencyDetails_sign_sub_36% EUR en 7 jours
(2 Commentaires)
0.0
jidusclay

I am an electronics engineer with 20yrs experience in digital design. I have performed entire circtuit design cycles from design to simulation, PCB layout and then test and validation. I also have support of an analog Plus

%bids___i_sum_sub_35% %project_currencyDetails_sign_sub_36% EUR en 14 jours
(0 Commentaires)
0.0