Re: I Robot joystick problems

buy a can of freeze spray and after it starts acting up, start spraying
components very carefully (so you only hit one IC at a time), when the
problem dissapears, viola!

If it is in both axis then it is most likely an IC and not the actual
hall effect sensors. I woudl guess that you will find the cause to be
the ADC but that is just a guess, it could be an op-amp IC that is
common to both X and Y or even a voltage flucuation somewhere. The
freeze spray will tell for sure tho.

joemagiera wrote:

>My I Robot is having recurring joystick problems. When it's left on too
>long, the joystick starts being goofy. It obviously is some sort of heat
>problem, as when the fan wasn't working the problem would show up in a
>couple of hours. I fixed the fan, and now the problem doesn't show up until
>about 4 hours.
>
>Upon start up (and even a few hours later), the joystick works fine and will
>pass the self test.
>
>However after 4 hours or so, it starts responding silly (it isn't totally
>dead, it just randomly does not respond correctly). If I do the self tests
>at this point, it reports that the joystick has "bad stability". When I
>look in the owners manual for this self test, it just says "have joystick
>serviced". Thanks a lot!
>
>Anyhow, anyone have any ideas where to start or what chip may control this,
>etc.? Thanks,
>
>Joe
>joemagiera@ameritech.net
>
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Received on Tue Nov 11 22:42:48 2003