Circuit design - temperature controller


I am looking for a freelancer that is able to design for me a Circuit with the followings functions:


- 6 Analog inputs - 2 Temperature sensors ,1 humidity sensor and 3 variable resistors (designer to choose the values)

-12 Digital inputs (13DI including enable) at 8V to 15V DC

-9 Digital outputs that can drive small electromechanical relays

-One monochrome LCD that can draw a graph of temperature -(designer to choose it)

-There are no dimensions restrictions or specific parts that need to be used

-There are no restrictions on power consumption

-Power supply to be at least in this range - 8V to 15V DC

-Temperature sensors to be able to measure between -40 +70 degree Celsius

-Humidity sensor -no restrictions

-Designer to propose few Temp and Humid sensors

-Main Restriction of this project is that the product to be very very cheap to mass produce

This is the first stage of my project so I need only the Circuit Design, to be able to test it on bread board.

Second Stage will be PCB design, that will be a separate project.

Skills: Circuit Design, Electronics, Microcontroller, PCB Layout

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About the Employer:
( 1 review ) Aberdeen, United Kingdom

Project ID: #12148688

Awarded to:


Hello, What kind of MCU do you want to use for the project and what is your price target for the MCU. We can talk more detailed over the chat. All the BEST, Ali ŞERBETÇİ

£150 GBP in 10 days
(28 Reviews)

we are an electronic design company in Nanjing [login to view URL] have high-efficiency teams and skilled [login to view URL] had done similar products that Used for water purification machine

£150 GBP in 5 days
(3 Reviews)

43 freelancers are bidding on average £206 for this job


hi sir i am an expert electronics engineer with more than 8 years of experience in this field. Please have a look at my profile I assure you quality work and on time delivery I am waiting for your reply to start R More

£150 GBP in 5 days
(182 Reviews)

Greetings, I have good expertise with circuit design, uC, LCD interfacing, sensor interfacing. Please see my profile for details. I can deliver the working design to you along with any support required to make it More

£400 GBP in 10 days
(7 Reviews)
£150 GBP in 3 days
(124 Reviews)

Hi, I am a post graduate power electronics engineer and having very good industrial experience of 8+ years in R&D and project development. I am excellent high frequency transformers design, circuits design, multi-chan More

£333 GBP in 7 days
(49 Reviews)

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

£300 GBP in 6 days
(47 Reviews)

HI, About the Project : Can i have more information about the project ? do you need the firmware for this as well ? can we talk about the project ? About ME : I am a programmer for 10 years and has perfect More

£150 GBP in 3 days
(32 Reviews)

I can do for you on a suitable controller. I also used in his work as a 4 lines LCD and graphical OLED. I am ready to discuss with you the best solution for this project.

£200 GBP in 10 days
(39 Reviews)

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 and code. i will also assist you so you will be More

£200 GBP in 7 days
(20 Reviews)

Hello, Have a great day. we will fabricate the PCB and ship you fully working circuit. Our deliverable will include all of the design data and source code of micro controller. Please feel free to contact us. Best More

£500 GBP in 15 days
(41 Reviews)

Hi, I hope you are doing well. I have expertise in temperature controller projects. I have understood your project requirements and I can execute it in less possible time. Looking Forward, Khawaja

£178 GBP in 3 days
(34 Reviews)

hi i am an electrical engineer. i have vast experience related to circuit design and micro controller programming. i have done many embedded system projects. i have hardware experience micro controllers. let me know if More

£300 GBP in 3 days
(24 Reviews)

Hello Dear, I know by the time my bid would land in your inbox you would already have received several offers for your project. This is a very competitive site. However I know the work required and we are expert More

£50 GBP in 3 days
(32 Reviews)

Hello I can help you with your design project , We can use some components like DHT11 for the humidity sensor, and DS18B20 for the temperature sensor, also we can use some transistor array like ULM2803A or individua More

£110 GBP in 15 days
(78 Reviews)

Hi, I have experience in Arduino developing. I have worked similar projects. PCB will be designed with Eagle PCB I can do your project. Regards, Slavi.

£508 GBP in 15 days
(12 Reviews)

Hi sir I gone through your requirements of the project. Myself I have 5 year experience of pcb design and hardware design field Currently I have design temperature and humidity sensor using pt100 and am1001, ght11 wh More

£111 GBP in 10 days
(33 Reviews)

HI, im embedded systems designer from india. and I have experience in making electronic product from scratch from component selection to manufacturing and assembling pcb in bulk. I would like to work with you on this p More

£250 GBP in 3 days
(7 Reviews)

Hi sir We are expert in circuit designs, pcb layouts, programming and we have delivered similar circuits to our candidates before. We offer you our solution at very affordable and comparatively low rates. Please More

£98 GBP in 9 days
(24 Reviews)

Hello, What MCU do you have in mind? Also, a breadboardable circuit will not necessarily be the cheapest to mass produce. Are you planning on running the circuit at -40C or just being able to read a remote sensor at More

£250 GBP in 30 days
(6 Reviews)

Hello Sir, I am electronics engineer and have experience in designing electronics circuits. I understand your requirements and I would like to do this project for you. Most expensive component will be graphic as More

£277 GBP in 30 days
(5 Reviews)

Hi! Im an electrical and electronic masters graduate of UWE. I have the experience of programming in C/C++/Assembly/Arduino/PIC C/MikroC/MATLAB for more than three years. I also have the knowledge and experience of EL More

£122 GBP in 3 days
(15 Reviews)