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Digital Signal analyzer

$250-750 USD

Cancelled
Posted almost 10 years ago

$250-750 USD

Paid on delivery
Software is based on PIC18/PIC24/PIC32 microcontroller (we have a list of available microcontrollers for this software, which one to use - it could be discussed), written on XC8/XC16/XC32 (we need source codes of this project) There's a digital signal (single-wire, serial data, unknown protocol*) that should be stored and reproduced. The signal is up to 500ms long. The data is frequency-modulated, with frequency of 19..75kHz (should be determined w/ a occuracy of 50** Hz by a software). During the signal the modulation frequency will always be the same. The signal could be stored/received to/from PC using a USB interface*** (USB HID on Microchip USB stack seems to be fine for that). So, it should be 2 keys - "store data" & "reproduce data". Waiting for a terms & expected prices. --- * unknown protocol - we never know if it is a UART, or any manchester-coded data, or Dallas 1-Wire(tm); we know nothing about bitrate as well (correct handling of 300..9600 baud should be fine, i think). And, actually, we do not need to know which protocol is used; that would be wonderful if we could have data as [ <frequency>, <high-pulse-length>-<low-pulse-length>, <high-pulse-length>-<low-pulse-length>, .... etc]. ** 50 Hz - that will be good accuracy of modulation frequency. if this precision could not be achieved - than we can discuss it. *** USB interface - that is not necessary, we have some libraries to add this interface in a very-short term, so we could do it afterwards.
Project ID: 6062131

About the project

21 proposals
Remote project
Active 10 yrs ago

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21 freelancers are bidding on average $706 USD for this job
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Hi Sir I am an electronics design engineer. I have gone through the requirements of the project. I can handle it. I have worked in all compilers. I can do it easily. I am new to freelancer but I have almost 5 years of experience in this field. I am waiting for your response. Regards
$838 USD in 20 days
4.9 (60 reviews)
6.9
6.9
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Dear sir I have more than 7 years experience in digital design using cpld and fpga, your project is well suited to be done using cpld or fpga I can design the data analyser for you , waiting your reply best regards
$750 USD in 15 days
4.9 (162 reviews)
7.1
7.1
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Dear Sir, I have completed several hardware and software project s using WiFi, Ethernet, USB, Bluetooth, GSM and RF using PIC, Atmel, TI ICs. Please see our profile for our past and current projects. We will make USB device with RAW HID Type and Software to download data from Flash IC. I need some more information on your project. Hope to join your project. Best regards, Lasantha Prasad
$1,111 USD in 25 days
4.7 (20 reviews)
6.5
6.5
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Hi there! My name is Keith and I am a professional electrical engineer here in the US. I now work solely as a contracting designer and freelancer. Many of my projects entail working with microcontrollers, PLCs and automated devices, Bluetooth wireless, and all sorts of LED and visual display projects. Being formally educated in mechanical engineering, I have various skills in CAD, structural analysis, and even aerospace design. Your project looks great and I am confident I can do it well. That means I'll have the ability to not only do a professional engineering job in design, but to make sure your project is completely correct all the way through! Please have a look at my resume and portfolio on my profile page to see a bit of what my talents are able to bring to your project. And don't hesitate to contact me with any questions before choosing a bidder. Thanks for considering! - Keith B.
$684 USD in 10 days
5.0 (4 reviews)
4.8
4.8
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Hi, We are a team of electronics&embedded engineer with more than 10 years of experience in designing and developing various digital and embedded systems... Since we help engineering students to complete their academic projects, we have experienced with a lot of sensors, components, PCBs etc. Please check our completed projects...:-) Kindly let us know more details about this project and we can complete it together...:-) Thank You
$444 USD in 8 days
4.9 (9 reviews)
4.6
4.6
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Hi, I am an electrical engineer with expertise in microcontroller programming and I can deliver you the required source code. I have a few queries related to the project: 1. Related to the modulation frequency, since the signal is frequency modulated, precise estimation of modulation frequency would require Fourier transform, which is much easily done on computer software than on a microcontroller. Another approach would be to get a fair estimate of modulation frequency by averaging the frequencies of the whole signal. Can you please specify what exactly are you looking for and how critical is the estimation of modulation frequency? 2. Since microcontrollers have a set clocking speed, there is a certain resolution to which it can measure the high and low pulse lengths. e.g for 80Mhz clock speed, this resolution is 50ns. While for 19Khz this causes an uncertainity of 15Hz, with 75Khz the uncertainity reaches upto 200Hz. And this uncertainity will always be there, no matter which approach is used for frequency estimation. A clarification on these requirements will help me give a better estimate of the work required. Looking forward to your reply, Azhar Sultan
$250 USD in 3 days
5.0 (2 reviews)
2.9
2.9
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Bir öneri henüz sağlanmadı
$1,111 USD in 30 days
4.6 (3 reviews)
3.0
3.0
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Hello, Let me introduce myself I am yasir amir khan. I am electrical engineer, running an online consultancy business, with several years of project related experience. Please check out my profile. and search my name on web, I have also authored several books and papers. Please note: 1- Hire me = your job done ! 2- I am offering the best rate in market. 3- Experience of working on numerous similar projects. 4- Best in the area of electronic designing, test me and you will agree! Thanks Yasir A.
$1,666 USD in 10 days
4.5 (3 reviews)
1.9
1.9
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Nie złożono jeszcze oferty.
$555 USD in 10 days
5.0 (1 review)
1.4
1.4
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A proposal has not yet been provided
$555 USD in 10 days
0.0 (0 reviews)
0.0
0.0
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Dear Sir, at your service 10 years of professional experience. This project has to be coded carefully and require a good experience, due to undesired effect of the sample frequency that can cause a sort of frequency shift of the original signal. Clean work, accurate explanations and job completed in a resonable time. All the assistance you need provided, also after the job, including realtime communication if you like. For any other information write me or take a look at my profile. I'm available right now, have a nice day.
$750 USD in 5 days
0.0 (0 reviews)
0.0
0.0
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A proposal has not yet been provided
$555 USD in 10 days
0.0 (0 reviews)
0.0
0.0
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I have a 15 year experience with PIC based microcontrollers, working with assembler and C. All I need is a sample of the signal and I should be able to code the software for you without access to your hardware.
$588 USD in 10 days
0.0 (0 reviews)
0.0
0.0
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Hello, I am an embedded systems designer and developer and would love to work on this project. Kindly contact for further conversation and award of job. regards, mak
$1,111 USD in 20 days
0.0 (0 reviews)
0.0
0.0
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Hello, I have won a project contest with programming PICs! (it was Honeywell Award, if you know about it). Also, I've got embedded- and microcontroller- experience, so I am definitely the one for the job. The time for completion is flexible. The price is fixed (i. e. I won't ask for more that I've bed).
$277 USD in 10 days
0.0 (1 review)
0.0
0.0
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I can do this project PIC18, XC8... *************************************** USB interface > c# visual studio 2010 ***************************************
$833 USD in 15 days
0.0 (0 reviews)
0.0
0.0
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use pic32 seems a good way to your project, i have the experiance on pic32, using tcpip stack , usb stack.
$555 USD in 30 days
0.0 (0 reviews)
0.0
0.0
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I am an Electronic Engineer with lot of experience in PIC microcontrollers. I can make what you need, but it would not be possible to obtain the 50Hz accuracy, at least in the high frecuencies. The period of a 75kHz signal is 13333 ns and the period of a 74950Hz signal is 13342 ns. The difference of 9 ns in period is not recognizable by a PIC microcontroller (PIC32MX runs at max. 80MHz). If the frecuency does not change, and the signal is always 500ms long (or long enough to measure many periods), it is possible to obtain the accuracy you need. If you hure me, you will be very satisfied with my job
$555 USD in 3 days
0.0 (0 reviews)
0.0
0.0

About the client

Flag of BULGARIA
Sofia, Bulgaria
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Member since Jun 12, 2014

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