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Circuit Board

I need a small circuit board designed with the following features:

24VDC Power to power it up

4Each 24VDC inputs

4Each Relay outputs - 2 amp relay contact

RS485 port

Two rotary dials to select address of board from 1-32

Modbus protocol on RS485 port

The inputs will appear on the modbus RS485 port as Modbus inputs

The outputs will appear on the modbus RS485 port as Modbus coils.

This is basically a Modbus remote I\O board with 4 inputs and 4 outputs that I can pole from a master device using the Modbus protocol.

I will need a prototype, and after it has been proved out, the complete board info, girber files, components, source code etc.

Skills: Arduino, Electrical Engineering, Electronics, Microcontroller, PCB Layout

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About the Employer:
( 2 reviews ) Hales Coners, United States

Project ID: #15390210

48 freelancers are bidding on average $1126 for this job

sagradoamicus

Hi I am an expert electronics engineer with more than 8 years of experience I can do it for you. I am not clear about the deliverables of the project. Please share the further details Relevant Skills and Experience I More

$1500 USD in 20 days
(201 Reviews)
7.5
EEmbedded

Hi Sir, We have previous experiance with electronic development and prototyping. Please see our profile for more details of past projects. We neeed more details of your project. Best Regards Lasa Relevant Skills an More

$1250 USD in 20 days
(32 Reviews)
6.9
seshupower

Hi, I am a post graduate power electronics engineer and having very good experience in product design and development. I am excellent in embedded design & programming using pic, dspic controllers and MATLAB codding fo More

$2777 USD in 40 days
(55 Reviews)
6.6
shahbaz1980

Hi, I-TECH will provide working prototype and all of the design data. Relevant Skills and Experience We are a company providing design and prototyping services in electronics industry across the globe. Proposed Miles More

$1500 USD in 45 days
(50 Reviews)
6.8
Davelelievre

I would produce design and build a working prototype to your requirements Best Regards Dave Lelievre Relevant Skills and Experience I have over 35 years experience as an electronic design engineer, please see my profi More

$1500 USD in 35 days
(25 Reviews)
6.2
jandle

Bid is in addition to prototyping costs. My proposal on that is 5-10 boards from Seeed Studios for about $1000, assembled. I need to know the protection level, but I have known good subcircuits. Relevant Skills and More

$1500 USD in 20 days
(10 Reviews)
5.2
riki888vw

Hi, I can build Modbus RS485 network for 32 boards (4 inputs and 4 outputs). Relevant Skills and Experience Arduino Modbus RS485 Proposed Milestones $930 USD - Project Please send more details about your project.

$930 USD in 30 days
(18 Reviews)
5.4
arslanuet123

EE and circuit design expert here to help u sir Relevant Skills and Experience Electrical engineering, circuit design Proposed Milestones $750 USD - required work

$750 USD in 20 days
(31 Reviews)
5.2
gold2star

Hi sir How are you? I am a professor of Electronics and Engineering. I am an Electronics and Electrical Design Engineer with the areas of expertise in Microcontroller,Embedded System,PCB design and layout and firmw More

$1250 USD in 20 days
(13 Reviews)
5.2
villabeto

Hello Sir. I'm very interested to do your project in just 5 days. Habilidades y experiencia relevante Microcontroller, PCB, Eagle, MikroC Htos propuestos $750 USD - Project

$750 USD in 5 days
(18 Reviews)
5.1
luisfilipeaguiar

My technical solution is: 8 bit uP @5V 1 IC UART to RS485 4x binary optical isolated input sensing 24V 4x Relays SPST rated 2A@230V Rotary or dip switch address selector (cheaper) Free Licences tools Relevant More

$750 USD in 20 days
(2 Reviews)
4.5
pro100roman

Hi. My name is Roman. Task is clear at all. But I have a some questions regarding board sizes, components and software. We can discuss it here, or in skype (my skype id - pro_100_roman). I try to work ahead, so fo More

$1111 USD in 30 days
(1 Review)
4.1
SPARKtechBD

I have read and understood. Have experience on digital electronics 15+ years. I like to work on your project. If possible please see my portfolio. Relevant Skills and Experience 15+ years of experience on digital elec More

$1500 USD in 60 days
(4 Reviews)
4.3
andualemtad

A proposal has not yet been provided

$1111 USD in 15 days
(7 Reviews)
4.7
binyameen441

I am an electrical engineer also expert in arduino. i will provide you code, schematics , gerber files etc Relevant Skills and Experience Electrical engineer Proposed Milestones $766 USD - circuit board

$766 USD in 20 days
(20 Reviews)
4.2
urbito

Hello there! Hope you doing good! If you still need this to be done, be sure to contact me. Lets make something awesome! Greetings! Habilidades y experiencia relevante Electronics Engineer Since May 2015 Htos propu More

$1333 USD in 28 days
(3 Reviews)
4.0
udayd75

Dear sir, We sonen engineer solutions provide Design, Manufacturing and consultancy services to Mechanical, Electrical and Electronic industries, we have qualified designers we support for design and development suppo More

$1666 USD in 20 days
(5 Reviews)
4.8
HiberXen

Hello, i am from shenzhen,china. i can provide you complete solutions. i have pcb samples and test facilities. please PM me. Relevant Skills and Experience pcb design and embedded design Proposed Milestones $833 USD More

$833 USD in 15 days
(6 Reviews)
3.8
bobbyshomerul

there are lots of ready made 2-4-8...16 relay boards with modbus protocol but sure, i can do a custom board for you Relevant Skills and Experience mC programming, pcb design Proposed Milestones $755 USD - !

$755 USD in 1 day
(2 Reviews)
3.6
mvish88

Bid money Includes purchasing the necessary electronics modules, microcontroller kits, electronic component for development of prototype. Relevant Skills and Experience Arduino, C programming, RS485/RS232 Communicatio More

$750 USD in 25 days
(7 Reviews)
3.6