[PD] pduino/comport w/ arduino freezes keyboard and trackpad on Macbook

[Hans-Christoph Steiner]

If the keyboard and mouse freeze, that's most likely because of some  
over-current condition in your wiring.  That then causes the USB bus  
to power off.  No software will help with that.  Usually, its caused  
by a short circuit.

.hc

On Oct 15, 2006, at 11:03 AM, David NG McCallum wrote:

> Hi HC,
>
> I've had the problem of the USB bus being killed because to much power
> was drawn, but it was because I plugged a pot into the wrong ports.
>
> This time, the kbd and mouse just freeze, no other indications of  
> anything else.
>
> So if unplugging the arduino will get my mouse and kbd back, do you
> have any suggestions of how I could actually use pduino if I can't
> leave it plugged in?
>
> D
>
> On 15/10/06, Hans-Christoph Steiner <hans at eds.org> wrote:
>>
>> Yeah, I saw this once or twice before.  But I wasn't quite sure what
>> it was.  One thing that I've seen people do is short out the power.
>> If you short out the power on the Arduino, or put too much of a load
>> on it, then the USB bus will automatically kill the power to the
>> whole USB bus, including your mouse and keyboard, if that's USB.
>>
>> My guess is that unplugging the Arduino should fix the problem.  What
>> exactly happens for you?  Does the mouse freak out and jump around
>> the screen?  I saw that once or twice, that's probably a bug in the
>> driver since I can't see how Pd could control the mouse pointer  
>> (yet).
>>
>> .hc
>>
>> On Oct 14, 2006, at 4:48 PM, David NG McCallum wrote:
>>
>> > Howdy all,
>> >
>> > I tried using pduino today, and when I specify the arduino board  
>> as a
>> > device for the comport object (devicename /dev/cu.usbserial- 
>> #####), I
>> > lose complete control of my keyboard and trackpad (on a Macbook).
>> >
>> > I can use the power button on the computer to start a shutdown, and
>> > when Pd's closed, I regain control. Ideas?
>> >
>> > D!
>> >
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>>
>>
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