Circuit Board
$750-1500 USD
货到付款
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.
项目ID: #15390210
关于项目
有36名威客正在参与此工作的竞标,均价$1170/小时
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 更多
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
We have a team with 3 groups: System Design, Layout PCB & Mechanical matching more requests and schedule. +15 years experience of Developing custom electronics, Schematic, PCB Layout & 3D enclosure. Relevant Skills 更多
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 更多
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 更多
EE and circuit design expert here to help u sir Relevant Skills and Experience Electrical engineering, circuit design Proposed Milestones $750 USD - required work
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 更多
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.
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 更多
Dear Employer, your project sounds interesting for me, especially because this is a complex project with both hardware and software design. Im ready to offer my sw&hw development services to cooperate with you and 更多
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 更多