Re: [Openeeg-list] pceeg microcomputer board software reset problem.

[Joerg H. <in...@jh...>]

Hi,

joshua wojnas, 21.09.2008 23:18 :
> pceeg microcomputer board software reset problem.
> I made a boarduino clone with stuff and reset does not work.
> The design is a cross between the boarduino and the digital parts of
> the monolith eeg.
> The reset uses optocouplers to isolate it.
> I may have a bad resistor or capacitor value near the reset optocoupler.
> 
> Please help would be appreciated.
> pceeg.sourceforge.net in the downloads section of the microcontroler board...


I have downloaded from
http://sourceforge.net/project/showfiles.php?group_id=147176

"...
PCEEG controller board & sch  	alpha eagle cad schematic & board V1.02 
5/9/2008  	June 23, 2008
..."


The reset circuit is plainly false. (Or at least I have never seen a reset 
circuit that works as a high pass filter)

For correction:

1) Remove R3 (1k)
2) Put C13 (0.1uF) in parallel with the reset switch S2.

(see attached files)


Regards,

	Joerg