Ethernet Digital IO Module

• Project ID:

  634352

• Project Type:

  Fixed

• Budget:

  $30-$250 USD
  

Project Description:

Objective
• To design and assemble a prototype for an “Ethernet Digital I/O module”
• The module should be capable to
• Receive commands over Ethernet from PCs
• Validates the commands
• Execute the commands (trigger digital outputs)
• Notify a remote PC of received events (inputs)
• Log the executed commands on a remote PC log file

The module should support the following
• Protocols IP, ICMP, UDP, TCP, DHCP
• DHCP, to obtain IP dynamically from DHCP server
• Static IP setting, a PC can configure the module and set its IP to certain address
• Ping reply, module should reply to ping commands
• Remote reset, resets the module to its startup state
• Logging of executed commands to a predefined socket server
• In circuit programming, microcontroller should be programmed while in the circuit
• 6 or more TTL level inputs
• 12 or more TTL level outputs
• RJ45 10MBit Ethernet interface
• Status Leds to show its operation mode (power, transmission)
• Troubleshooting Leds to be used for debugging (error code)
• DC Power connector
• In-Circuit Serial Programming (ICSP) Connector
• Pin headers to interface to IO components (relays, switches, ..)



Method of operation
• Module starts, load its configuration from eeprom
• Module awaits commands from PC or events on its input pins
• Pc can send an output command to the module, followed by a checksum
• Module verifies that this is a valid command (via CRC or similar)
• Module execute the command by setting its TTL output
• Module log the executed command to a predefined PC
• If an input is triggered on one of the module inputs, then the module sends an event to PC
• Module log the executed command to a predefined PC


Constraints
• Module size should be no larger than 10x15 CM
• Module should be powered using a DC source, no larger than 12V 1Amp
• Module cost should be less than $20 to manufacture (components prices)

Deliverables
• Schematics diagram, in one of the standard software packages formats
• Layout diagram, in one of the standard software packages formats (max 2 PCB sides)
• Components list, table in MS word file, showing component name, price, supplier
• Microcontroller source file, code to be downloaded to microcontroller
• Document, MS word, explaining the protocol used to send/receive commands
• Tools to assemble/compile microcontroller code and burn it
• Steps to test and validate the module, in MS word file
• Steps to burn the micron roller code and install it to the microcontroller
• PCB, with components soldered, functional prototype


Project milestones
• Agree on terms, cost
• Start project
• Deliver design documents
• Approve design documents
• Start execution
• Deliver working PCB as prototype
• Deliver remaining documents and software


References
http://www.ljcv.net/projects/mchptcp3.75/hardware.html
http://www.sparkfun.com/commerce/product_info.php?products_id=7829
http://www.mikroe.com/en/tools/serialeth-proto/

Skills required:

Embedded Software, PCB Layout

Additional Files:

Ethernet+Digital+IO+Module+RFP+v1.1.pdf