AVR MCU based input board with RS485 out

$30-250 USD

Completed

Posted

about 9 years ago

$30-250 USD

Paid on delivery

I need a very small board running an atmega 328p MCU at 20 mhz with 9 button inputs(buttons should not be included only broken out to screw terminals) and 1 analog input from photo resistor. the unit must have a RS 485 chip connected to the UART lines broken out to screw terminal. (max 485 chip ideal ) Please take note of following 1) PCB board can not be bigger then 60x60mm 2) Needs to have four mounting holes 3) Bottons needs to be active high and drop low when pressed(supply to buttons needs to be provided) 4) Resistor for photo resistor needs to be already added to the input line. 5) Need a ISP header in order to load the program and Arduino boot loader 6) Needs to be powered from 12v source.(screw terminal input )

Electronics

Embedded Software

PCB Layout

Project ID: 7494082

About the project

1 proposal

Remote project

Active 9 yrs ago

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Awarded to:

@toanluloi

Dear sir, Please trust and give us a chance to work on this design. We will complete this design within your deadline. If you need to have some REF design from my team to show our ability, please let us know. Please let me introduce a little about myself: 1. I have a team (7 members currently, can increase if need), we are working for a USA company(schematic design and PCB Layout, 3D models). - The software we are using is Cadence Allegro 15.7-16.6.10, Altium 14.3 and Mentor Expedition EE7.9.4. Solidworks 2014... - The board can be small to large: up to thousand components and high density constraint, high speed signals, PCIe, SFP, DDR3...etc. - Multi layers boards. (2 layers up to 40 layers). - Multi people to work on the board to meet your schedule. 2. Working Proceduce: 1/. We will estimate the working time. If you approve the working time, cost, and schedule, we will start to work. 2/. We will send you the daily report to report status and bring up any questions/issues regard to 3D, schematic, layout (block diagram, documents, guidelines, ...). 3/. You can send us any requirement on report daily via g-mail or skype id:ducthang2013 4/. Note that we can put multi people on a design so the schedule can be reduce to meet your request. Thanks for your consideration. If you need more information, please let us know.

$222 USD in 5 days