[GreenKeys] TTY-Connect schematic error

[gil smith]

Hi Byron:

Oops.  Yes the schematic should show C11 (not C10) near U11;  it is a 
bypass cap (0.1 uF) for U11/12.  The assembly drawing and silk are correct.

Actually, the schematic should show U11, U12, and C11 as optional, which is 
why they are not on the parts list.  U11 and U12 are external eeproms 
(non-volatile memory) -- there are many sizes of eeprom that fit into these 
sockets.  But there is a small eeprom built into the pic, which stores the 
tty-connect machine configuration.

I am trying to finish up version 1.0 of the code for shipping with the 
boards (should be next week).  Part of the not-yet-done stuff includes 
possible programmable strings for WRU and test messages.  These may need to 
go in an external eeprom.  I am not committing one way or another on these 
strings yet, but I plan to include a 24LC16 chip with each micro, so you 
don't need to worry about it right now.

Folks:  please note that I will be away from email this weekend.

thanks,

gil


At 08:09 PM 7/1/2004, you wrote:
>Hi Gil;
>
>I was checking parts list against schematic and found two C10's
>obviously the one on U11 is C11.  U11 and U12 are not on the parts
>list.
>
>I am making a parts list for the total board with the C's, R's and Q's
>totaled to go to  Mouser. I assume that U11 and U12 are loaded via
>RS232 or is that included with the PIC...
>
>I've got Friday and Saturday off so i'll do some more checking over
>the weekend. Have a  great 4th and 73 from the West Coast....
>

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