Breadboard ESP32/ESP8266 design GPS for location detection

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we look for a hardware specialized mate with good expertise on developing a ESP32 (or similar) breadboard design for a mobile GPS location detection.

Goal is to use as much as possible details to identify the position of the device. Ideally a few cm of positioning accuracy.

Required skills:

- knowledge how to identify high precise position via as much as possible different satellite systems

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- knowledge how to identify fast the current position via GSM/LTE positioning

- very high knowledge on RTK, AGPS, DGPS, RTCM 3

- very high knowledge on ESP prototyping

The current idea is to use ESP8266/ESP32 based devices, along with central managed solutions.

generic goal:

- identify the current device position as accurate as possible, preferable a few cm

- provide well documented code

- send position details with accurate time, accuracy of position via MQTT to MQTT server

- positions are stored on device in the case no internet connection available

- on having connection all "old" stored data are transmitted first and then current data is sent

- schedule of position detection can be configured in seconds

- schedule of deep sleep of ESP can be configured in seconds

- solution shall be highly energy conserving, since in later phases it will run on battery and optionally on additional solar power for charging battery. So you require to consider sleep, deep sleep modes and the corresponding scheduling of the modes

level of discussions expected:

Ideally you already have implemented such a solution. The solution is working and you could demo.

What we require:

- you can offer us that solution with specific hardware

- you let us know the benefits compared to our requirements

- you let us know the drawbacks compared to our requirements

MS1 - phase idea:

provide schematics and components of your currently existing solutions.

We would require the list of components and the brief wiring (simplified schema)

based on this we want to evolve to equal or better solution.

MS2 - phase concept papers:

goal to define required hardware for:

- compute / GPIO module (e.g. ESP32)

- GPS module (e.g. Geekstory BN-220)

- matching possible external antennas (active/passive) to increase accuracy

- LTE module (for later milestones)

- research for ideal hardware (ESP and positioning)

- provide a Excel with the decision parameters

- provide your hardware recommendations based on the decision parameters

- power supply for MS2, MS3 shall be USB powersupply to be easy able to replace/charge power banks, along with choosing usb plug for mobile tests

examples for the Excel:

product; product type; sensitivy GPS; sensitivy GLONASS; sensitivity Galileo; sensitivity ...; cold start time; energy during cold start, energy in hot standby, ...; description; hints; your experiences ; ...; expected accuracy internal antenna; expected accuracy external passive antenna, expected accuracy external active antenna, energy during active antenna usage. Here some sample rows:

Geekstory BN-220; GPS receiver; ...

Seamuing GT-U7; GPS receiver; ...

From here we move on after a mutual successful cooperation, and we assign your the milestones MS3 and later.

MS3 - phase breadboard prototyping:

do a solderless, breadboard based wiring (or similar efficient) prototype, which wires the previously chosen components & modules to a functional prototype.

Provide us the BillOfMaterial (BOM) also for the same with documentation how to setup, so we can do same tests locally here. E.g. provide a video of your setup to be able to rebuild locally

send us a set of functional breadboards to our location for in depth tests.

MS4 - phase firmware/software development:

- implement position detection based on GPS only in own function/method

- implement position detection based on the other position systems (GLONAS, Galileo, ...)

- do the same for other maybe available options available on the choosen hardware

- each function shall be callable independently to be able to test the different accuracy in a proof of concept later

- write into local csv style file and or send to a http/ftp server as a upload (whatever is more efficient to access later from any host)

- share code into our git

- share how to flash the prototype as readme or video or via a mutual video-session

MS5 - phase firmware/software development high preceision:

- implement position detection based on DGPS in own function/method

- implement position detection based on other similar solutions like DGPS or combined meassuring of multiple location services

MS6 - phase prototype tests on real environments:

we do local tests e.g. testing about the precision of the tracking

We may require here changes on the progress.

MS7 - enhance firmware/software for field later field tests:

- use results of MS3 functions and store them in local persistent buffer (suggest best approach)

- read regularly (configurable schedule) the buffer and send via default MQTT over TLS, and configurable without TLS (must explicitly defined to use unsecure path).

- Remove message from buffer on success MQTT sending of it

MS8 - phase preparation for serial production:

- provide full detail schematics of the previous prototype

- provide full BOM


- best practices with IOT

- best practices with software engineering (buy or build)

- well documented code by the means of the programming language

- best practices with hardware engineering (buy or build)

- suggested by checking current market, especially open source

Your background is:

- multiple years of experience with IOT

- multiple years of experience with ESP8266/ESP32 solutions or STM based

- multiple years of experience with integrating multiple IOT devices into a simple to use UI for end users

If you are a good fit, you are open to assign more tasks about implementing solutions fully on your own (e.g. with your team)


will not be disclosed, place your best bid to get considered

What is next?

We will share you a NDA and afterwards a paid test task.


- you estimate in a WBS (optimistic, expected, pessimistic, where optimistic < expected < pessimistic) after getting the task

- we discuss about clearances and effort

- we mutually agree to effort

- we assign you the task after mutually agreed

- you implement, test and deliver

- you provide also unit /integration tests to ensure code is always working

- you document each required step to make interaction of systems to work

- we test on our premise (you maybe help to fix issues)

- we pay

(basically the rules of freelancer)

Closed book vs open book?

We work only on open book.

Closed book means you are unwilling to define a WBS for the work and you add only a price tag to the task.

=> We are sorry we will not hire you in such a case!


- in our on premise git (access will be granted to you)

- full sources

- full description how to build the sources as binary

- integration into CI

- full description how to flash the devices

- full description / video how to setup the hardware in a prototype state on our end

- libs, need prior confirm and we prefer to use mostly latest stable versions

- your solution has to work on our end, so you will help to make it up and running e.g. via video calls or via remote desktop accesses

- provided or fully documented steps to start servers as the docker container, if prior agreed as also virtual machine possible

Microcontroller Elektrisk Ingeniørarbejde GPS Arduino Elektronik

Projekt ID: #37244021

Om projektet

11 bud Remote projekt Aktiv 5 måneder siden

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Hi there, I am Syed, an electrical engineer with a strong background in Arduino and electronics. I understand you are looking for a hardware specialist with good expertise in developing a ESP32 (or similar) breadboard Flere

$78 USD in 5 dage
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11 freelancere byder i gennemsnit $99 timen for dette job


Hello, my name is Hassan and I am a freelance electronics engineer specializing in the design, development, and fabrication of hardware solutions for a wide range of technical areas. With extensive knowledge and experi Flere

$100 USD in 7 dage
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Hello there! My name is Md Raseduzzaman and I am an established, heavily experienced Embedded Systems Engineer with 4 years of experience in PCB Designs and Microcontroller Development. I understand your project requir Flere

$55 USD in 7 dage
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Thanks for again posting this project. I can surely help you developing the breadboard setup for showing the GPS location and testing its accuricy. I already have the required hardware available at my end. Please fe Flere

$150 USD in 2 dage
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Hi Darko P., I am a professional engineer and have been working on the design as well as hardware projects for the last 08 years. I have a great experience doings work with GPS, Arduino, Electronics, Microcontroller Flere

$65 USD in 21 dage
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I understand that you are looking for a hardware specialist with good experience in developing an ESP32 (or similar) breadboard design for a mobile GPS location detection. My skillset encompasses knowledge on how to id Flere

$155 USD in 7 dage
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Hi there I m an Architect/Civil Engineer/BIM/CAD Expert and will offer you the Best Discount. You can pay me a reasonable price + Good Review only. I want to review your Breadboard ESP32/ESP8266 design GPS for locati Flere

$80 USD in 5 dage
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Objectives of this project will be completed and sent through all others instruments. Time is taken mare than given. It will done as soon as possible.

$105 USD in 13 dage
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Yo! I am interested in your project Breadboard ESP32/ESP8266 design GPS for location detection I have completed similar papers in the past and can assure you of exceptional and original work within the agreed deadline. Flere

$100 USD in 2 dage
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I have a lot of experience in developing journey monitoring systems for cars, as well as IoT systems that use GNSS systems. If needed, you can contact us for advice or a more detailed demo. As an individual with availa Flere

$100 USD på 1 dag
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