RS-232 with hardware flow control Raffi Krikorian December 8, 2002 This is an improvement on the Simple RS-232 board design. In the previous board design, data will just come streaming in without anything the PIC and do about it, and sometimes you just want the ability to tell the computer to "shut up" for a bit. Likewise, the PIC may be streaming lots of data out to the computer, and the computer might want to tell the PIC to shut up for a bit while it thinks. One way to do it is implemented in this board with hardware flow control just for that very reason. Parts List (with Digikey part number and approx price as of publication date): 1 PIC16F876-20 microcontrollers PIC16F8760-20/SO-ND -- ~ $9/each 1 LTC1480 RS-485 transceiver LTC1480IS8-ND -- ~ $6.50/each Files: 232withflow.pdf- A PDF of the schematic for the board DK_MICROCONTROLLER.OLB 232withflow.DBK 232withflow.DSN 232withflow.opj- OrCAD capture files for the schematic 232withflow.asm- PIC16F876 assembly code for the PIC