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Modular Pressure Sensor Matrix PCBA - Part 1


This is Part 1 in a large project, the successful Freelancer will be asked to join on multiple contracts if performance on Part 1 is to a good standard.

This project is for the design of a MODULAR large pressure sensor matrix PCB and requires the freelancer to develop a working PCBA, test it and deliver to our office. The pressure matrix is arranged in a grid formation, where one layer has vertical lines and the bottom layer has horizontal lines. By scrolling through each line very quickly we can determine the exact pressure positions on the sensor mat. We have used multiplexers and switches in the past to achieve this function and it worked really well so we suggest the freelancer to use a similar method. Voltage dividers also help give the matrix a wide sensing range..

We have our own sensor mat prepared so the freelancer does not need to make the mat but should perform testing with off the shelf FSR to ensure the PCB works as desired.

The PCB should also include circuitry for 6 DC vibration motor drivers which operate at 3V. The microcontroller used should have very fast processing speed to allow for quick scanning of the 1800+ sensor points. Arduino or similar programming language is preferred so we can make edits in future.

Design Requirements:

-Pressure sensor matrix interface for reading approximately 1800 sensor points (44 horizontal x 48 vertical)

-A module for playing simple sounds (buzzer or similar)

-MODULAR pressure sensor input so we can use the same PCB with different number of rows and columns of sensor lines.

-Analog reading of pressure sensor should be used, use of a voltage divider or similar circuit is recommended

-Very fast based processor, should be able to connect the PCB to a raspberry Pi to interface.

-6X vibration motor driver circuit to control 6 DC coin type motors operating at 3V

-Lipo 3.7V or 7.4V battery power, also power through USB-C when connected

-Can also be operated while plugged into the wall supply

-Fast recharging rate via micro-usb or USB-C

-BLE (Bluetooth Low Energy) for communicating sensor values to a PC or phone

-USB-C to USB or data interface to plug PCB directly to a PC for reading the values (when BLE is not used)

-Should include power button or ON/OFF switch to turn the PCB ON/OFF

-RGB Led for status indication, i.e. Blue LED means ON, Green LED means charging battery, Red LED means low battery, Purple LED means ON and Connected (BLE).

-Green Led to indicate charging

The freelancer is not expected to do much coding, only to test the circuit elements and features. The code is also to mainly ensure the pressure sensor matrix and power circuits are working correctly.

Project Deliverables:

1) PCB Eagle Schematic Files, BRD files, Gerber Files, BOM, X-Y pick and place, Code

2) Video of working PCB with testing

3) PCBA delivered to our office

Compétences : Electronique, Génie Électrique, Mise en Page PCB, Microcontrôleur, Design de circuits

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Concernant l'employeur :
( 4 commentaires ) Tsukuba, Japan

Nº du projet : #27477640

Décerné à:


Hi! Thank you for quite detailed project description. I can help you to design, manufacture and test the prototype as you've described it. If BLE support should be added I'm thinking about using a single BLE SoC which Plus

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12 freelances font une offre moyenne de 650 $ pour ce travail

(61 Commentaires)

Best PCB Design Expert at your doorstep! Dear Client, I can Pressure sensor matrix interface for reading approximately 1800 sensor points I couldn’t stop myself from bidding after going through the description as the Plus

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(13 Commentaires)

Dear Client I read the details, and I understand the design requirement of this project. I can design you the Pressure sensor matrix as per the requirment all the supporting components. I am Electronics Engineer from I Plus

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(19 Commentaires)

Dear Client, I can design a MODULAR large pressure sensor matrix PCB and develop a working PCBA, test it and deliver to your office I have read and understood your requirements and could do it for you in the least time Plus

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Our team at Maskottchen technology provide you with best designing and developmental services. We here aim to provide you with quality work, that on time. Please note, our motto is successful results, and not money. T Plus

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(20 Commentaires)

Hey there, I hope you are doing good. I am ELECTRICAL/ELECTRONICS ENGINEER from India with 4+ years of experience in designing PCBs. I am familiar with various CAD tools including tools preferred by Manufacturers. I a Plus

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HI Hiring Manager, Full Stack Developer, Specialized in IoT with LABView,MQTT, STM32 , ESP32 Android App , IOS App and Web Development with AWS, Electronics Microcontroller Electrical Engineering PCB Layout Circuit De Plus

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Hi, Thanks for sharing the requirement. We are expertise in product design, development and Testing (Hardware Design, Digital logic design (CPLD and FPGA), Schematics Entry, PCB Layout design, Software, Firmware, Mecha Plus

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Hi there. Hope you're doing well. We will be able to help you with this project. We would need to know which pressure sensor are you using and what is the range of it. Also what would be the size of the circuit? Which Plus

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I have been teaching in universities since 2014. Have done my masters in robotics. I am an assistant professor at a university in Pakistan in EE Dept. I have been teaching since 2014 and am also working on my PhD in co Plus

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Hi my name is Husnan. This is my first time apply bid on freelancer since I have pretty much time to do side job now. I'm the man of my word. I have deep experience in electrical/pcb design and also manufacturing for 1 Plus

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