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Design a temperature sensor

$30-250 USD

Zaprt
Objavljeno pred več kot 5 leti

$30-250 USD

Plačilo ob dostavi
You have to design a temperature sensor. Chat with me to know more details. Will give details. The main thing is it should be of small size. Details You are free to use existing boards, such as esp2286 etc Size of complete sensor including battery and sensor: 50mm x 50mm x 30mm Power Backup: 5 days, reporting frequency: 6min Technology: Wifi Must be uploadable on any open source IOT platform The board should have a charger for the battery. If not using the chargeable battery, then the battery backup should be 1 month. We are open for board-Integrated temp sensor We shall prefer if you can combine humidity sensor as well.
ID projekta: 18342727

Več o projektu

36 ponudb
Projekt na daljavo
Aktivno pred 5 leti

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36 freelancerjev je oddalo ponudbo s povprečno vrednostjo $152 USD za to delo
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Hi, I hope you are doing well. I have expertise in embedded system design and development. I would like to know more details about your project requirements. Please send me message for further discussion. Looking Forward, Khawaja
$222 USD v 3 dneh
4,9 (84 ocen)
7,2
7,2
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Hi, We can use DS18B20 from maxim. Its only need 2 wire which is data and ground, because it use 1 wire interface. we can use waterproof version of it and use Arduino nano as processing unit. It's a small project that can be done in 1-2 days. Let me know your response about my proposal. Best Regards, Rijal
$155 USD v 10 dneh
4,7 (110 ocen)
7,0
7,0
Avatar uporabnika
Hi Sir, Lets discuss what kind of sensor you want us to build for you. We are professional engineers and developers who do such projects from the last eight years. We offer you our skills for this project at very low rates comparatively without compromising the quality of work. Let me introduce you to our company TURKTRONICS. We are TURKTRONICS. We are professionals with 8+ years of experience in Circuit designs, PCB designs, embedded system solutions, mobile app development, programming and software development. We provide complete end to end solutions for all kind of development projects. IOT is our strong point. In this bid, prototyping and shipping cost is not included however paying extra slight of money to include prototypes. We have the manufacturing facility and we produce the very high standard PCB boards and send ready products to customers doorsteps via DHL. We care about our clients and help them to get out of any potential problem throughout the projects and also give post completion technical support if ever required. We are very much looking forward to hear from you on this in coming days! Cheers!!! Ahmad Lead Technical Engineer TURKTRONICS An Internet of Things Company !
$250 USD v 12 dneh
4,8 (58 ocen)
7,1
7,1
Avatar uporabnika
========================= good day I am a mechanical engineer with extensive prototype development experience. I can design your sensor. Send detailed information about him and I can help you? Where will it be applied? What is the body of the sensor? Will it be a thermistor or a thermo pair? What degree of protection? I will be glad to cooperate Mykola
$140 USD v 10 dneh
4,9 (11 ocen)
5,8
5,8
Avatar uporabnika
My proposal includes both hardware and software: - C++ code for ESP8266 upload temperature data to a simple nodejs backend on the cloud. It will be compiled via Arduino IDE. - PCB design in Eagle format and the gerber as well. Cost not include: making prototype nor shipment. Additional $ is required for that. Also the dimension is: 40mm x 75mm x 30mm because it will works with 2 Panasonic 18650 cells. Recommend using external charger because the integrated charging circuit will be very slow and not convenience. User just simply replaces battery. The board will use DHT22 module which provide both temperature and humidity. Pls chat if you want to ask anything. >>> Updated: 1. With 5 days on battery and interval of 6 minutes, it's possible to run on only 1 good 18650 cells. Using near-square cell is possible to fit into 50x50x30mm but need to find good cell - which is difficult. It's better to stick to Panasonic 18650. 2. If board is running with micro-USB and battery is for backup only, then on-board automatically charging is OK as no need fast charging. 3. Battery can be smaller if static IP is used instead of DHCP.
$300 USD v 7 dneh
4,9 (24 ocen)
5,3
5,3
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I have more than 5 years experience in embedded systems and PCB design with eagle and altium design software. so I can do your job within a time limit with your satisfaction.
$388 USD v 7 dneh
4,8 (8 ocen)
4,9
4,9
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yes buddy,,,me here to work,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
$50 USD v 3 dneh
4,8 (86 ocen)
5,0
5,0
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Hi, I am a professional electronics and VLSI engineer. I can design CMOS based temperature sensor for on-chip application having low voltage, and less power consumption. Soft: # Cadence Virtuoso # Ltspice #Hspice Technology nodes: # TSMC 130/180nm waiting to hear from you.... thanks in advance
$222 USD v 7 dneh
5,0 (7 ocen)
4,5
4,5
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$50 USD v 5 dneh
5,0 (4 ocen)
3,7
3,7
Avatar uporabnika
Hi, I know the physical principals of a temperature sensor working. It may be semiconductor or metal conductivity based. I and could calculate the sensor response. However, to estimate the my working time more detail are needed: what you mean by design a temperature sensor, or a small size comparing to what? So I bid $150 as a base for discussions.
$150 USD v 3 dneh
5,0 (5 ocen)
3,4
3,4
Avatar uporabnika
We are a team of Engineers with expertise in circuit design & simulations as well as PCB manufacturing. We can do this project perfectly and design the temperature sensor that suits your needs. Hire the BEST, forget the rest
$217 USD v 3 dneh
4,7 (4 ocen)
3,7
3,7
Avatar uporabnika
Hi I am interested in your project. I am experienced with different types of temperature sensor. Please check my portfolio. Please send me a message so that we can discuss more about it.
$150 USD v 3 dneh
5,0 (3 ocen)
3,5
3,5
Avatar uporabnika
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 3 days max, i need just more information about your project lik a composante your connection diagrams. so, if you want to work with me I will guarantee you a good job delivered in the good deadline thank you and good luck ^^
$180 USD v 3 dneh
5,0 (7 ocen)
3,0
3,0
Avatar uporabnika
I am Electronics Engineer and know about cheapest and smallest temperature sensor which nothing but the simple transistor, BT546. We can use it's junction temperature changes +/-2mV/°C.
$55 USD v 1 dnevu
4,8 (3 ocen)
3,2
3,2
Avatar uporabnika
Hi! We are experts in product development. we can give you a turnkey solution including circuit, manufacturing process and even help with sourcing from multiple countries. please revert back so we can discuss in detail. until then take care hope to talk to you soon! Please check our reviews to know the quality of our work
$222 USD v 3 dneh
5,0 (1 ocena)
2,8
2,8
Avatar uporabnika
Hello from Shenzhen. we can design this board for you. please send more details about your project. we have sample making facilities also
$155 USD v 3 dneh
3,5 (6 ocen)
3,8
3,8
Avatar uporabnika
I am professional Embedded Software Engineer with more than 4.5 years of experience in the field of Embedded System Development. I have worked extensively with ARM, AVR, Arduino and SBCs like Raspberry Pi, Beaglebone Black etc. I can deliver the project in the quoted price and time. Looking forward to discuss this further. Regards, Rishabh Hardas
$188 USD v 25 dneh
5,0 (4 ocen)
2,2
2,2
Avatar uporabnika
I have made projects like this and have prior experience in the modules which are to be used in the projects. I will complete this project on time as said. So please provide us with this project.
$150 USD v 10 dneh
5,0 (2 ocen)
1,9
1,9
Avatar uporabnika
I am an electrical engineer, MSC in applied mathematics, MSC in power systems, PHD. Control and automation. I can make your problem at any level, within my proposal, I can offer you additional extras. with 23 years of experience. I can make your proposal with all the details you need. I can improve your proposal, with a mutual agreement. I have worked as heads of automation engineers, processes in several machine design management companies and industrial production plants. other forms of optimization, improving the manufacturing process, etc., we can discuss the details of your needs in the chat. I have already done this type of analysis for this application the matlab, labview, and others. There are several ways of showing and doing the mathematical models and of the different functions of tranaference with its associated characteristics, with quite accurate estimation of the system, for your needs, and it can be done from the information. I am interested in your project I can do your project Atte. ING. Luis Moreno
$250 USD v 5 dneh
5,0 (2 ocen)
0,6
0,6
Avatar uporabnika
Hello there I hope you are having a good day. I am an Electrical Engineer by profession. I need to know more details of the project. Looking forward to hear from you soon. Regards aftabahmad1994
$30 USD v 1 dnevu
0,0 (0 ocen)
0,2
0,2

O stranki

Zastava INDIA
Dehli, India
5,0
21
Plačilna metoda je verificirana
Član(ica) od sep. 2, 2010

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