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Real-time sensor app

$250-750 USD

Zavřený
Zveřejněno před více než 5 roky

$250-750 USD

Zaplaceno při doručení
I want to measure the rotations of a magnet near a 3-axis magnetometer and do some simple processing to it. THIS IS A PURELY FUNCTIONAL SINGLE-USER APP. It does not need to be pretty, or even very user-friendly. PROBLEM Imagine a magnet mounted inside a ball, so it can rotate randomly in any orientation. ... like a cylindrical magnet stuffed into an orange. As the orange rotates, the 3-axis magnetometer senses rough sinusoids, each going through a maximum and minimum as the ball rotates. I need these 3 input signals resolved to a single rotation... because I want to know how the ball is rotating as listed below. The overall magnitudes (s) will increase and decrease as the ball moves closer and further from the phone, but I don't care about these values. I'm looking for TWO pieces of information: 1) A rotation counter, recording how many times the ball rotates in a direction between "start" and "stop" (Note: When the ball reverses direction (meaning when the ball is rotating in a particular direction and then the inverse signal is measured.... the inverse signal will NOT be a perfect mirror of the original because the ball will wobble or be off-axis slightly, and the algorithm needs to accommodate this variation.) 2) Angular velocity of the ball rotation (rev/second) This does NOT need to be accurate +/- 20% is fine. Again, I'm NOT interested in accumulated 3D data over time. I'm resolving collected 3D input (XYZ) into a single output, because in the real world the orientation of a ball does not matter. RAW DATA A sample of raw data from the three sensors is provided. The motion is not fast: maximum 1 revolution/second FOCUS As mentioned above, do not quote as if this is a full application. That comes later. This app is purely functional data collection. Very basic. My current belief is that programmers who do not have mathematical skills will find this app difficult... And programmers comfortable with math will find this app easy.
IČ projektu: 18000558

O projektu

25 nabídky
Vzdálený projekt
Aktivní před 5 roky

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25 freelanceři nabízejí v průměru $452 USD za tuto práci
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Hi, Hope you are doing well! I am professional mobile app developer with over 7 years experiences. I am very interested in this project. Hope to work with you. Best Regards
$555 USD v 10 dnech
5,0 (74 recenze)
7,8
7,8
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https://www.freelancer.com/projects/mobile-phone/real-time-sensor-app/?w=f#placebidHello, I am a full stacking developer, I have worked many Application and live on application store, we will discuss about project feature and I will give you the best work of mine in estimate time duration.I'm very familiar to application Features I will develop Mobile Application as per your requirement, I provide the 6 months free support for this project If you want to see my previous work I will show you Regard YashTech Thanks
$555 USD v 10 dnech
4,7 (107 recenze)
7,7
7,7
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Hello, I am available full time for work. I am experienced Android App developer, and looking to start working with you on your project STEP BY STEP FURTHER i have experienced with Android Studio PROGRAMMING and BACK-END IN PHP, MYSQL AND JSON AND JAVASCRIPT. APPROACH FOR PROJECT: I will start working on your project in design work at first and submit for approval and once approved or any feedback i will do REVISION ON DESIGN and submit again for approval. IN ORDER TO MOVE FORWARD, COULD YOU OPEN CHAT WINDOW PLEASE SO I CAN SHOW MY PORTFOLIO! I have good skills relevant to your project requirements in Android studio and Objective C programming, Back-end panel in (PHP,MySQL) and Rest APIs development. I got 5 years of experienced in developing apps for the startups and have good proven track records and excellent clients reviews. My first priority is to earn client maximum satisfactions and earn their believe on my work to serve quality work. I am always available for the quick communication during development to ensure everything going perfectly as planned. After development there will be free support to fix bugs and issues if you might face. I look forward to working with you. Julian (Developer) , Thank You
$500 USD v 10 dnech
4,5 (80 recenze)
7,5
7,5
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Expertise in MATLAB with a substantial background in sensor interfacing. I have completed various projects related to this field and can provide you your complete task in decided time frame with quality work. We can discuss further details in the message box Regards
$250 USD v 5 dnech
4,9 (108 recenze)
5,6
5,6
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Hi,. I read entire description and can help you built the prototype that you are looking to start with. I am pretty good with maths. I have worked with magnetometers, accelerometers and gyros before in android app to create an algorithm for sleep detection. Yours is a different purpose, and can help with that also. Let us discuss more about your project via chat box.
$333 USD v 10 dnech
4,6 (65 recenze)
6,2
6,2
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Very interesting project! If you see my profile, you can know I am a mathematics professional. I major in analysis, calculus, statistics, numerical computation, fractal geometry and chaos dynamics as well as elementary algebra(i.e Linear Algebra) and abstract algebra(i.e Group and Ring theory). I can complete your project in 3~4 days. If you have a chance to discuss with me, you will get the best result all the time in the future. Budgets will be determined after we discuss in detail. Regards.***
$250 USD v 3 dnech
4,9 (32 recenze)
5,6
5,6
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Hello I've read your description and can know that you'd like to build a real-time sensor app. As a senior developer who has good experience in Android/iOS app development, I'd like to help you with this project. I will provide you with the same features and functionality according to given details and project scope and I will also provide you with free support to fix bugs after the development of the project. I will available full time for the work and available until you satisfied with work. I have more than 5 years of experience in developing NATIVE and HYBRID apps. I can work dedicatedly and will deliver the quality work on time and budget. I look forward to hearing from you soon. Please ping me over FREELANCER CHAT WINDOW. So, I can share my past work. Thanks Regards Nikita
$333 USD v 2 dnech
4,2 (16 recenze)
5,9
5,9
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Hello, I have gone through the description and pleased to inform you that we are one of the Top-Notch software development firms based in Canada, Global Niche Tech, with the team of 50+ professionals who are expert and capable of working on almost every platform and framework. We can surely help you with the development of this application as we have worked on similar projects. Looking forward to hearing a positive and prompt response. Thanks Jason Webbs - Assistant Manager Global Niche Tech CA
$555 USD v 10 dnech
0,0 (0 recenze)
0,0
0,0
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Hi, I have the mathematical knowledge that is needed for this project. Can you please let me know more details about this project? Thank you, Constantin
$250 USD v 5 dnech
0,0 (0 recenze)
0,0
0,0
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I am master of mechanical engineering student. I am working on IMU device and sensors in my thesis. I think I can solve your problem because same kind of application of magnetometer we are using in our thesis.
$250 USD v 5 dnech
0,0 (0 recenze)
0,0
0,0
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Hi, I'm a robot engineer with 3 years' working experience on navigation/localization, your problem belongs to attitude estimation using magnetometer, for which I have much experience, I think maybe I could help to deal with this project if more information can be given, feel free to contact me.
$400 USD v 3 dnech
0,0 (0 recenze)
0,0
0,0
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Hello, I can offer you expected results using Labview on an Windows computer and a data acquisition device connected to computer via usb. Let me know if this would be OK for you. Best regards, Nicolae
$555 USD v 15 dnech
0,0 (0 recenze)
1,8
1,8

O klientovi

Pochází z UNITED STATES
Berkeley, United States
5,0
6
Ověřená platební metoda
Členem od zář 1, 2003

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