2mar2008

Node485

Description:
Node485 is minimal networkable computing/control node.  This design 
created as a starting point for open hardware/software concepts for 
eaglebeak.  Full data package will be available for download including
schematic and pcb artwork file that can be used to have pcbs fabricated
using the ExpressPCB service.  A link to a Bill of Materials with 
supplier information will also be provided

Features:
-PIC 12F629 flash processor 1Kwords of flash, 64bytes of ram, 128bytes eeprom
-DPDT relay that is controled by one output pin of the PIC
-Terminal block for connecting external switch for control input
 and accessing one pole of the relay
-RS485 serial communication (probably limited to low speed since
 design uses internal RC oscillator rather than crystal to minimize
 cost, baud limits will be empirically derived in future)


Software:
   Example programs will appear when you least expect it.