embedded mobile microcontroller with GPS -- 2th update

I want to build a prototype which does the following things:

1) position detection via GPS

2) transmission of position data to remote server

3) data connection on GPRS - GSM - 3G-4G mobile network

4) installation on a mobile offroad vehicle powered by 12V

5) continuous (1 x minute) weight detection (low precision required) from a load cell from 0 to 50 kg

6) detection of 8 opto-isolated digital inputs

7) 8 relay outputs

8) low cost display 10 " or 12" high brightness colors

9) power down on power off and autoresume on power on from ignition key

10) connection between close devices ( at most 100mt ) of the same fleet through some RF (wifi, Lora, ..) at low power

11) small autonomous battery


1) on the display I would like to show some general information, like velocity, productivity (i.e. meters/hour), battery charge status. There must be enough space to show some other informations in future.

2) weight will be measured during marching on rough terrain (unpaved land) so I think we cannot have any accuracy on the weight measure. You must provide some filtering to achieve a better measure. Weight will be used to value personnel productivity. I think 5% or 10% accuracy may be enough.

3) one measure every minute (filtered (maybe average or continuous average) starting from 30 or more measure for minute)

4) Communications. Maybe it will be not necessary to comunicate among units/devices. If 100 mt is a big far for wifi I can accept other solution. The direction is not known and may change during operation

The device must be functional at a prototype level using commercially available hardware. I don't want to build custom circuit board. I prefer a ready to use technology.

The firmware must be written preferably in C / C ++. I will evaluate solutions with alternative languages.

The microcontroller must be 16 or 32 bits. I prefer that you use texas instrument MSP32 and / or Espressif ESP. I will evaluate solutions with alternative controllers.

The system must be designed to operate on cars.

-5 °C to 50 °C operation temperature and storage temperature -10 °C to 70 °C.

Data will be stored on a non volatile memory and then periodically send to a remote pc.

My initial idea was to put a cell phone SIM card in each system and use the cellular network for data transfer.

When the vehicles return to their storage area to recharge the batteries, they must be able to download all the data stored during the working day.

Route control is not necessary . Fences control is a good feature, i.e. assign a work perimeter and if the vehicle leaves the assigned perimeter, send a message to the remote portal / server.

The vehicle is already working.

It's a battery-powered asynchronous motor.

There is no need to act on the engine.

Квалификация: Программирование на С, Программирование на C++, Электроника, Микроконтроллер

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О работодателе:
( 0 отзыв(-а, -ов) ) Foggia, Italy

ID проекта: #18761255

16 фрилансеров(-а) в среднем готовы выполнить эту работу за €1162


Hi, I hope you are doing well. I have expertise in embedded system design and development. I have worked on all embedded technologies mentioned in your project description. I would like to discuss the project Больше

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Hello, I am Anthony from Sri lanka. We are a hardware designing & prototyping company. Why you should hire me ? - I have seven years of experience in the field and have developed many systems. - I ha Больше

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hi there we are a team of electrical and software engineers. we have read you specs and we can develop a prototype for you with esp32. let us know if you are interested.

€2000 EUR за 35 дней(-я)
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Good day, I have read the details of your project and I am able to complete this task. I have a lot of experience developing similar projects on the Arduino platform. Please contact me so that we can discuss more detai Больше

€1666 EUR за 30 дней(-я)
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Hello there How are you? I see you want to develop the embedded device that has GPS and GSM/GPRS to track the location and send data to the server. I can do your project well and can start the project right now. I h Больше

€555 EUR за 10 дней(-я)
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Hello, Here are my comments on you points 1) Ok, Noted. Which GPS module you want to use or I can use as per my choice? 2) Ok, Send me detail or explain me which remote server you are using 3) OK, Noted 4) OK, N Больше

€722 EUR за 10 дней(-я)
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i have aready design this product using 4G,3G and gprs and relay with opto elctronics . if you want to see a demo that i will saw you . so i can do your job within a time limit with your satisfaction.

€2777 EUR за 45 дней(-я)
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Hello, I believe I could answer the product development needs of your project in terms of both design and hardware development. I could develop a circuit that houses AVR microcontroller at the controls and we cou Больше

€1866 EUR за 40 дней(-я)
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Hi, I have read your project description carefully. I have worked with microcontrollers(PIC, AVR, ARM) for 6+ years and have enough experience. Also I have made many automatic devices with Arduino Boards, relays, wi Больше

€750 EUR за 20 дней(-я)
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Hi,dear. I understand your proposals and I am very interested in this job - 'embedded mobile microcontroller with GPS -- 2th update'. I am senior software developer and I am able to perform this task in timely manner. Больше

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Hi This device can be developed with sim800 module which has GPS and GPRS in a single module or similar and ESP 32 which has WiFi/Bluetooth for closer communication. I can show you previous works Relevant Skills and E Больше

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Hello, We are a team of professionals. We have experience with Embedded System, Fast Product Prototyping, PCB and Schematic Design, Firmware Development. We have already realized a control system with GPS via 2G Больше

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€616 EUR за 7 дней(-я)
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i have read throughly your requirement , i have developed the products which uses GSM+GPS integrated ic to upload and download to the server...and i am sure i can help with displaying the data you want to display....

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