Project:Tool Access Control/Solexious Proposal

(ACN refers to Access Control Node, a physical node attached to a tool)

I plan to

• Base the device on the Duemilanove arduino as it fits our needs and has a wide base of users.
• Use the wiznet chip for ethernet support
• Use i2c sm030 rfid readers
• allow different control outputs (relay, Darlington, servo control etc)
• use flash memory for internal storage

Services

Mission critical

These must function without networking or main server available:

• Check if card in ACN local db and allow use if is
• Set tool into "out of order" mode

Non critical

• Add cards
• Report back to central server (usage etc)

Progress

I have made a prototype shield for testing code while the full design remains to be tested and produced. http://www.flickr.com/photos/solexious/6865500239/

Design for the full ACNode at: https://github.com/solexious/ACNode

Network protocol

Get card permissions

/[nodeID]/getpermissions/[hex pairs in ascii]/

i.e.

• /1/getpermissions/04FF7922E40080/

returns

• 0 - no permissions
• 1 - user
• 2 - maintainer

Check DB sync

/[nodeID]/resync/

Sets the DB as needing a resync from the beginning

i.e.

• /1/resync/

returns the first card in the DB i.e.

• 04FF7922E40080

/[nodeID/resync/[last received card]/

i.e.

• /1/resync/04FF7922E40080/

returns either the next card in DB i.e.

• 03FF7922FF008F

or when out of cards returns

• END

Report tool out of service

/[nodeID]/status/set/[status]/[Card id]

• 0 - out of service
• 1 - in service

returns

• 0 - not saved
• 1 - saved

Check tool status

/[nodeID]/status/check/

Check if the ACNode has been remotely taken out of service, or put back in service

returns

• 0 - out of service
• 1 - in service