Better touch screen with MINI6410

Dave McLaughlin
I have a Mini6410 with the 7" touch screen display and the touch is very
poor under either Linux or Android.

I see that there is additional hardware on the back of the LCD PCB but I
can't find any reference on how to use this.

Can anyone point me in the right direction?

Thanks
Dave...

Dave McLaughlin
OK. I managed to get the 1-wire version to work by removing R6-R9 and
shorting R11,R20,R21 and R22.

I noticed this was being selected on the boot debug output and suspected
this was the reason for the buffer full messages.

Now booting into Android 2.3 to try it out.

Dave...

Steve
Can you enplane this more please.
1-wire version ? is it a Dallas 1W AD connected ?

Steve

Dave McLaughlin
Hi Steve, no, it is an ST processor on the PCB attached to the LCD that is
emulating the 1-wire interface. This is talking to an ADS7846 12 bit touch
screen controller. You should have the schematic for the LCD on the CD/DVD
that comes with it.

I had to unlink the direct connection to the ARM Processor and link the 4
wires of the touch to the ADS7846.

I am using the Android 2.3 build and it is built to use this 1-wire
interface and the touchscreen is now a pleasure to use on the 7" screen I
have.

Dave...