analogue circuit design and digital processing

£1500-3000 GBP

Closed

Posted

almost 6 years ago

£1500-3000 GBP

Paid on delivery

We are developing some devices to measure physical activity using strain gauges. Part of the process will be to measure an analogue voltage / current (for about 15 s) from a bridge circuit, sample at ~1000 Hz 16 bit, then transmit via bluetooth to a smart device (iPhone etc). Transmission doesn't have to be real-time, it could be buffered and then sent as a package. The electronics will need to be battery powered. In the first instance we will need a working prototype which would lead to a product that required no operator input and turns itself off after a fixed time. Sorry no images at present. In the longer term the electronic device would need to have a unique id number such that several of these devices could be used at the same or similar times but logged against their id .

Project ID: 16963920

About the project

14 proposals

Remote project

Active 6 yrs ago

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14 freelancers are bidding on average £2,456 GBP for this job

@sagradoamicus

Hi I am experienced electronics designer with more than 8 years of experience. I have completed a number of projects here, Please review my profile to see the feedback from my previous employers. I would like to discuss more in detail Regards

£2,300 GBP in 25 days

4.9

(208 reviews)

7.8

@aliserbetci

Hi, I would like to know more about the project. I have good experience about analog signals. One of my last project was automatic guitar tuner(also for some of Turkish instrument) with processing analogue signals. All the BEST, Ali SERBETCI

£2,500 GBP in 40 days

5.0

(35 reviews)

6.5

@mechatronicsengr

Hi, I hope you are doing well. I have expertise in embedded system design and development. I have reviewed your project details and I would like to know ranges of voltage and current measurement you want to interface? I have worked with Bluetooth interface as well. I have understood your requirement and Looking Forward to discuss further. Looking Forward, Khawaja

£2,500 GBP in 35 days

4.9

(51 reviews)

6.3

@amelectronics

Hello I have experience in designing electronics circuits and can make your project. For your assurance, i can just say that, "I AM IN CHINA RIGHT NOW AND I CAN SHIP COMPLETE WORKING PROTOTYPE TO YOU AND WILL GET THE PAYMENT AFTER YOU WILL RECEIVE THE PROTOTYPE AND WILL BE SATISFIED WITH IT." Thanks

£3,500 GBP in 45 days

4.9

(26 reviews)

6.3

@MIKY4227

Senior ENGINEER. have at least 40 years experience developing Hardware and Software Expertise in stran gauge mesure and Bluetooth working with nrf52822 Producing Analog/Digital Video board designs, layouts and modifications; Verifying designs and layouts; Preparing documentation for manufacturing; Develop Digital/Analogue electronic board architecture and design by developing product concept; Researching, analyzing, selecting, and applying design concepts, approaches, techniques, and criteria; adapting and modifying board design alternative architectures; developing and evaluating new analogue/digital architectures and algorithms; defining functionality and requirement specifications; Developing board layout including size, performance, power consumption, and cost;

£2,500 GBP in 10 days

4.9

(50 reviews)

6.3

@shahbaz1980

Hello, Have a nice day. Iam Shahbaz Ali from I-TECH. We will design, prototype, test and deliver the Electronic device to log data. We will also develop Android app to log the data. If you want to work with us on long term we will develop cloud interface to log the required data (this could be phase 2 of the project). We will recommend to have 18 bit ADC for better resolution. Please feel free to contact us. Best Regards, Shahbaz.

£3,000 GBP in 45 days

4.5

(44 reviews)

6.9

@RaspberryOculus

Hi there , I am Electrical + Software engineer with 19 years experience . I am interested in your project,Kindly send me a private chat message since this is a public post .

£1,500 GBP in 30 days

5.0

(12 reviews)

5.9

@CoherentTech123

Dear Sir, I am an expert with more than 15 years of experience in the field of embedded systems, electronics, prototyping and PCB layouts. I assure you the best solution for your design project. Please share with me details over chat Regards Ch

£2,500 GBP in 30 days

4.8

(38 reviews)

5.8

@mamdouhmaitah

Hello I did many project using strain gauge, I would prefer to connect the Arduino to PC and make drawing there using Matlab utilities. Then after confirmation we can develop the app to present and figure the data. Please let’s make small chat to select the right strain gauge also to know for which application this will be used.

£2,777 GBP in 30 days

5.0

(8 reviews)

4.7

@zeshankhan43210

Hi. I am a professional Electronics Design Engineer having expertise in sensor interfacing with controllers and their data reading. I can provide you the working proto-type as per your specifications. Contact me.

£1,500 GBP in 30 days

4.6

(13 reviews)

4.7

@wenzhaoxu

Hi, I think I can do it. I have developed some EEG/ECG product. I am expert in Circuit design/PCB layout/Firmware develop. I have more than 19 years experiences. I have developed a lot of product, some of these is used in China High-Speed System. Please contact me and discuss about your requirement. Thanks.

£3,000 GBP in 40 days