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Strain Gauge (Load Cell) Interface to Raspberry Pi or Arduino

£250-750 GBP

In Progress
Posted over 5 years ago

£250-750 GBP

Paid on delivery
Design a PCB to read an analogue signal from a strain gauge (Load Cell) with the reading ultimately being read using a Raspberry Pi or Arduino. The strain gauge we need to use is an H10J-15t-32-dxx Load cell. Product Details: [login to view URL] Product Datasheet: [login to view URL] The problem is the small voltage coming from the strain gauge. The strain gauge sensitivity is .045 mV/V + or - 0.05 @ 6 tonnes We have tried various analogue to digital boards which have worked with the smaller strain gauges up to 50kg, but we need to measure accurately on this strain gauge which measures up to 15 tonnes. We need to be able to measure within an accuracy of + or - 10 kg but would prefer to 1 kg We need to be able to connect up to 8 load cells. This should be on one board. We have not been able to read the small signals with the following A2D boards ADS1115, ADS1015 and MCP3008 with amplifiers. We would like you to give a brief description of your solution identifying any components you think would be able to handle the measurement of such a small voltage. If a board is developed or if you are going to use an existing board, then we need to be able to interface with the board using a Raspberry Pi. We will only release funds after we have a prototype built, tested and reading the measurements accurately. Required: - PCB Design (Gerber file format preferred) Component list and a Bill of Materials. An indication of the build cost of the board and components,
Project ID: 17354475

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26 proposals
Remote project
Active 6 yrs ago

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Use instrumentation amplifier IC AD623, AD624 or some similar (gain=1000) Feed analog signal from load cell to instr amp Feed o/p of ampl into analog port of Arduino Do rest of calculations on Arduino Relevant Skills and Experience Luckily I'm working these days on similar project at uni. It includes 200N donut load cell that is mounted below a cylinder upon which water droplets will freeze. I'm able to read on Arduino Proposed Milestones £194 GBP - Arduino Code £194.89 GBP - Circuitry The sensor I'm using has even less sensitivity (0.01764mV/V). And I'm able to read in milligrams. My sensor was special one (about 12000 NOK) with some other stuff. Your project will include the cost of sensor, instrumentation amplifier IC, some resistors, batteries. I have worked on Arduino so I might not be able to suggest for Raspberry Pi.
£388 GBP in 4 days
0.0 (1 review)
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26 freelancers are bidding on average £587 GBP for this job
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We have already done very similar project related to these strain gauges and developed very state of the art custom boards, just check our level of quality and you will find us the right choice for u. Relevant Skills and Experience We have 10 years of experience now in developing all kind of embedded applications and hardware. Proposed Milestones £350 GBP - Project Fee We are very much looking forward to hear from you in coming days. Ahmad Lead Tech Engineer TURKTRONICS
£350 GBP in 10 days
4.8 (56 reviews)
6.8
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Hi, I hope you are doing well. I have understood your project requirements which are interfacing loadcell with Arduino. I understand you have faced issue with amplifiers, Relevant Skills and Experience I have hardware available for quick prototyping and development. I have worked with load cells. I can make sure that prototype is working fine then we can go to PCB design. Proposed Milestones £840 GBP - Project Please send me message for further discussion. Khawaja
£840 GBP in 20 days
4.8 (86 reviews)
6.8
6.8
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I have over 35 years experience as an electronic design engineer, please see my profile for more details Ignore bid price at the moment Best Regards Dave Lelievre poole Dorset Relevant Skills and Experience I have extensive experience in designing load cell interfaces and sensors with very low outputs Proposed Milestones £833 GBP - To be discussed I am afraid that you are pissing in the wind if you try to use the ADCs you described. 50 ton is 45000kg. (a 12 bit ADC is only 1 in 4096) In order to have any chance of achieving this you need a 24bit ADC. Also it must be a digital interface to your main computer. Even then it will be difficult and you should consider having multiple load cells for the one load to increase your chances of achieving this. I believe I have a frighting chance but could not accept your terms. It would have to be staged payments.
£833 GBP in 10 days
4.9 (27 reviews)
6.3
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I have read your description and understood. I have real time experience on Arduino and Raspberry Pi to build any prototype device. Relevant Skills and Experience I can design an adapter to read the small voltage signal to 5 volt signal to use with Arduino or Raspberry Pi. Proposed Milestones £750 GBP - To get a good delivery of the project.
£750 GBP in 10 days
5.0 (8 reviews)
5.6
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Hi there,I'm an electronic engineer, And i'm quiet Experienced with High Speed PCB Design and Implementation. I'm an expert in Eagle CAD,EasyEDA Relevant Skills and Experience Expert in Eagle CAD,EasyEDA and arduino Proposed Milestones £500 GBP - final Can you please send me a message,So we can discuss more about the project? I can design your PCB Perfectly and send you the files ready to manufacture the Boards Design is a huge part of my life and I work hard to produce the highest quality, effective, innovative, timeless, designs that my clients will love and I would love to work with you!! :) Thank you Achini
£500 GBP in 3 days
5.0 (12 reviews)
4.3
4.3
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Hello, i have read the details provided..please contact me to discuss more on the project deadline and some other few things Relevant Skills and Experience Arduino, Electrical Engineering, Electronics, Microcontroller, PCB Layout Proposed Milestones £250 GBP - .
£250 GBP in 10 days
4.2 (11 reviews)
4.6
4.6
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i made product with load cell which is similar of this type.i can provide you the best solution load cell weight meter Relevant Skills and Experience i have more than five year for product deveploment Proposed Milestones £666 GBP - 666
£666 GBP in 30 days
4.9 (3 reviews)
3.3
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I have worked on 200 kg load cell with an accuracy of +-100 gms. The system I have developed can also send the measured weight into an Android app via bluetooth. It should also provide the calibration as well in case the system malfunctioning. Calibration is done via Android app or via a given hardware button.
£444 GBP in 40 days
0.0 (0 reviews)
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I'm a mechatronics engineer. I have worked long time for about 5 years in industrial field. I soved many problems using arduino and respberry pi , so i have good programming skills. I'm interested in working with you I recently made a project using load cell 200kg with Arduino so I'm sure that I can do this project for you How many wireless the load cell that you have had and how many load cells do you want to connect?
£388 GBP in 3 days
0.0 (0 reviews)
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Hello, I'm applying for the job you posted. To solve the problem, I'll build a voltage amplifier, it will be an output to the strain gauge and an input to the Arduino, by knowing the amplifier gain, I will introduce it in the Arduino code and therefore make accurate measurements. If you're interested by this method, please contact me. thanks.
£388 GBP in 15 days
5.0 (1 review)
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Engineered in electronics & instrumentation Relevant Skills and Experience Presently working in steel & power sector
£277 GBP in 3 days
0.0 (0 reviews)
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I got expertise in designing pcbs for iot,wireless module
£694 GBP in 12 days
0.0 (0 reviews)
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Hi, I can integrate a loadcell using hx711 (24bit adc ~8bit noise) or 12 bit mcp3208 adc with atmega32. And results could be provided using serial output for any device including rasp pi. Relevant Skills and Experience In the field i experienced about force and load measurement for high loads. For this study; In theory you can get under 1 kg resolution about 0.23kg. And in field proper ratio is about 1/2400.
£527 GBP in 30 days
0.0 (0 reviews)
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I can help you to make your project work... i've been work with microcontroller for almost 4 years and i want to help your project working properly.
£555 GBP in 10 days
0.0 (0 reviews)
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I'm a mechanical and instrumentation engineer and I have several years of experience in designing and implementing measurement systems. I can design the PCB as you require. Relevant Skills and Experience experience in designing and implementing measurement systems. Degree in instrumentation engineer .Arduino and raspberry pi programming skills , embeded C . Proposed Milestones £100 GBP - PCB desing and a woking prototype £455 GBP - PCB files in gerber format I can design the system for you have a working prototype ready for you within a week and I don't charge a single dollar until you are satisfied with my work
£555 GBP in 10 days
0.0 (0 reviews)
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Northampton, United Kingdom
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