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Design and development of a microcontroller based instruments

$250-750 USD

Closed
Posted almost 6 years ago

$250-750 USD

Paid on delivery
This project aims to help re-design an instrument for testing moisture content in foodgrains based on AT89C52 microcontroller to Atmel SAMD21 Cortex M0 microcontroller The analog design has been re-used from the previous working instrument. Working Principle: The resistance is measured by applying high voltage across foodgrain sample. The resistance of the food grains to the current depends on the moisture in it. Once the resistance is known, the moisture is measured using certain formula derived using graphical observation method. The high voltage is applied using a step up transformer and relays for a duration of around 7 seconds. The moisture result once obtained can be stored in internal memory, external USB pen drive or SD Card. The result can also be printed on a serial or Bluetooth Printer. All the process is controlled by a keypad and observed on a 16 x 2 LCD. Tasks completed till date, Interface of USB, SD Card, 16 x 2 LCD, 4 x 5 Hex Keypad, ADC and Relays has been done. Schematic design and PCB has been done and tested for a basic moisture reading accurately. Software framework for the menu flow has been done using state machines. Testing of USB, SD-Card interfacing and External I2C has to be done yet, Calibration code has to be completed. Storing the reading and retrieving from the memory has to be done. Battery management hardware is to be tested. Bluetooth and serial printing has to be completed. Integration of the modules has to be done. Code for menu driven operations has to be done . Freelancers from bangalore are preferred.
Project ID: 17086863

About the project

11 proposals
Remote project
Active 6 yrs ago

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11 freelancers are bidding on average $511 USD for this job
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Hi Sir, We have read your project sir, we are very best in cortex M0 based mcu programming, lets talk to us on it. We are professional engineers and developers who do such projects from the last eight years. We offer you our skills for this project at very low rates comparatively without compromising the quality of work. Let me introduce you to our company TURKTRONICS. We are TURKTRONICS. We are professionals with 8+ years of experience in Circuit designs, PCB designs, embedded system solutions, mobile app development, programming and software development. We provide complete end to end solutions for all kind of development projects. IOT is our strong point. In this bid, prototyping and shipping cost is not included however paying extra slight of money to include prototypes. We have collaboration with Atechcircuits & WELLS Inc in Shenzhen China for excillent quality PCB manufacturing. We care about our clients and help them to get out of any potential problem throughout the projects and also give post completion technical support if ever required. We are very much looking forward to hear from you on this in coming days! Cheers!!! Ahmad Lead Technical Engineer TURKTRONICS An Internet of Things Company !
$600 USD in 18 days
4.8 (46 reviews)
6.7
6.7
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Hi, I hope you are doing well. I have expertise in embedded system programming and development. I have worked on Atmel AVR and ARM controllers and worked on all the components you have mentioned in the description. I would like to discuss the project and start working on it. Looking Forward, Khawaja
$631 USD in 10 days
4.8 (70 reviews)
6.7
6.7
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Senior ENGINEER has more of 40 years’ experience in this profession, developing Hardware and Software Expertise in video processing and associated simulation and evaluation tools and methods, communication I2C, I2S, SATA, RS232, RS422, RS485, USB, TCP, Bluetooth, RF433, Wi-fi, GSM, GPS, GPRS and any other serial communication. Producing Analog/Digital board designs, layouts and modifications or any other multi-layer PCB design, Verifying designs and layouts. Preparing documentation for manufacturing. Gerber, contact with partner in China for make PCB in 32 layers 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 3D model, size, performance, power consumption, and cost. Establishing integrations; preparing drawings, schematics, diagrams and Gerber’s . Collaborating with Related board design teams; evaluating components, materials, and suppliers; Identifying and resolving design integration/interface issues thermal
$833 USD in 10 days
4.9 (53 reviews)
6.5
6.5
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sir i have done alot in this microcontroller field and i am sure i can do this as it is software based so do hire me for this it will be pleasure for me to do this
$250 USD in 4 days
5.0 (4 reviews)
2.8
2.8
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Been working with the 8051 microcontroller in embedded projects for the past 10 years
$555 USD in 15 days
0.0 (0 reviews)
0.0
0.0

About the client

Flag of INDIA
Ambala, India
5.0
14
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Member since Jun 29, 2013

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