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7" display possessed by the devil or fried?

Former Member

I don't think this is possessed but need some opinions  if I really damaged my touch screen.

 

I have the touch screen mounted in a nice panel and have been very happy with it.  I use a browser in full screen to present a touch panel for control.

 

Recently mounted the PI cobbler inside and I have been playing with some gpio controls.   I need more room inside the panel so I bought a round 40 pin ide cable.   I quickly found after several attempts that the 40 pin ide cable is not a straight through IDC cable but has several pins shorted together to ground.   Every time I just plugged in my new ide ribbon cable the pi led went out and it lost power.  (I am sure something shorted to ground)

 

I replaced the old 6" ribbon cable and everything seems ok.    But now when I use the touch screen not only is the calibration way of it seems like is it firing a bunch of clicks, zooms and scrolls.   I don't know how else to describe the behaviour than it seems like it is possessed.

 

 

Questions:

 

1.   Did I fry the capacitance screen by plugging in the wrong cable or have I just loosened a connector somewhere.

 

2.  Is there any dmesg reading or anything that might tell me if it is damaged.

 

 

Thanks in advance.

 

Kyle

  • 0

    quick update I switch from USB power to the the supplied usb wall wort and everything seems to be fine.   I so another tip about the little rainbow in the corder meaning you don't have enough power.

  • 0 in reply to Former Member

    To: KB: Glad you solved your own problem.. But what did you mean by "switch from USB power to the supplied usb wall wort". By "usb wall wort", do you mean the micro-USB 5Vdc Power Brick(s)? What is USB Power? Power from say a USB port off a Laptop/Desktop? (which BTW may not have sufficient +5Vdc ) If anything, placing a 40pin (old PC-style )IDE Ribbon Cable w/ every other lead at Ground, should affect the GPIO pins Not necessarily the 7"LCD display. In wiring my 7" touch screen, I have  5 wires between the RaspPi and the 7" touchscreen. (this per a Pete Oakes Video) pin02-5V, pin03-data, pin05-clock, pin06-Ground, pin11-Interrupt. Actually I DO NOT have pin02 CONNECTED b/c I am using separate USB Power Bricks for RaspPi, 7" Touch Display. Then there is that Flat Cable (from RaspPi and the 7" Touch Display)

    USCDADNYC (NY NY USA)