Re: Directly connecting a digital camera module to the RCX

> Thanks ! (Also, for your precious e-mail advice.)
You're welcome ;o)

> I added another small program
to send a GV (get version) to the CMUCam2. The result is first an acknowledge
> "ACK\r"then a message "CMUcam2 v1.01 c6\r:". However, every second package
> doesn't read the first two characters correctly. So, we get the ASCII series
> after the ACK\r :
> 
> 3 255 85 99 97 ... instead of
> 67 77 85 99 97 ...
> 
> Probably the CMUCam2 introduces a pause after the ACK\r.
Why could it be a problem?

> 
> Suggestions?

I'm afraid no :-(
> 
> After half an hour of work with the module, the RCX starts getting hot in the
> area of the C- output connector. The 200mA are perhaps too a heavy load.

According to my measurements:

<<http://philohome.com/motors/RCXout.gif>>

voltage drop at 200mA is about 1.5V, so pover dissipation in the driver IC is
about 0.3W, well within the capability of the package. Moreover the driver
includes a very effective thermal shutdown (I triggered it quite a few times
while testing RC-motors on RCX).

Philo