Circuits
Circuits that may come in handy.

PIC16F87X/A Related
PIC16F877A.sch (56K) Eagle Schematic for the PIC16F877A microcontroller kernel (updated 25 Feb 2005).
PIC16F877A.pdf (25K) PDF version of the PIC16F877 kernel schematic.

Atmel Atmega32 Related
atmega32_kernel.sch (207K) Eagle Schematic for the Atmel Atmega32 micrcontroller kernel (24 Sep 2006).
atmega32_kernel.pdf (31K) PDF version of the Atmel Atmega32 microcontroller kernel.

Microcontroller Support Circuitry
RS232Connector.sch (17K) Eagle Schematic for the RS232 level conversion board.
RS232Connector.brd (24K) Eagle Board Layout for the RS232 level conversion board.