Auki

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.

Taidot: Arduino, sähkötekniikka, elektroniikka, Mikrocontroller, Piirilevyn asettelu

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

Projektin tunnus: #15390210

48 freelanceria on tarjonnut keskimäärin 1118 $ tähän työhön

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 Lisää

1500 $ USD 20 päivässä
(201 arvostelua)
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 Lisää

1250 $ USD 20 päivässä
(32 arvostelua)
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 Lisää

2777 $ USD 40 päivässä
(55 arvostelua)
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 Lisää

1500 $ USD 45 päivässä
(50 arvostelua)
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 Lisää

1500 $ USD 35 päivässä
(25 arvostelua)
6.2
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 5 päivässä
(18 arvostelua)
5.1
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 Lisää

1500 $ USD 20 päivässä
(10 arvostelua)
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 30 päivässä
(18 arvostelua)
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 20 päivässä
(29 arvostelua)
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 Lisää

1250 $ USD 20 päivässä
(12 arvostelua)
5.2
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 Lisää

750 $ USD 20 päivässä
(2 arvostelua)
4.5
andualemtad

A proposal has not yet been provided

1111 $ USD 15 päivässä
(7 arvostelua)
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 20 päivässä
(20 arvostelua)
4.2
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 Lisää

1666 $ USD 20 päivässä
(5 arvostelua)
4.8
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 Lisää

1111 $ USD 30 päivässä
(1 arvostelu)
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 Lisää

1500 $ USD 60 päivässä
(4 arvostelua)
4.3
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 Lisää

833 $ USD 15 päivässä
(6 arvostelua)
3.8
bogdan2451629

Hello I am expert in small manufacturing and prototyping. I have expirience with Modbus and and PCB routing. Relevant Skills and Experience 5 years hardware dev Proposed Milestones $1250 USD - for working prototype a Lisää

1250 $ USD 20 päivässä
(10 arvostelua)
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 1 päivässä
(2 arvostelua)
3.5
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 Lisää

750 $ USD 25 päivässä
(7 arvostelua)
3.6