Hi,
I am using GLCD 128x64 Touch Screen from Mikroelectronica on a project. The touchscreen driver circuit is copy of the one on PIC18 development board(Easy PIC V7). I am using PIC18f67k22 to control the display and touchscreen.
The problem I am facing is, I get a full 0 Volts to 5V on one axis of the touchscreen. On the other axix, the variation is very small 0.7V to 1.7V. I have tested this with the sample code given by Mickro electronica. I have worked on touchscreen and familiar with driving the touchscreen and reading the ADC values.
Issue appears to be on the driver circuit comprising of transistors and resistors. I have seen similar designs with different resistor values.
Any help is really appreciated.
Thanks,
Paul
I am using GLCD 128x64 Touch Screen from Mikroelectronica on a project. The touchscreen driver circuit is copy of the one on PIC18 development board(Easy PIC V7). I am using PIC18f67k22 to control the display and touchscreen.
The problem I am facing is, I get a full 0 Volts to 5V on one axis of the touchscreen. On the other axix, the variation is very small 0.7V to 1.7V. I have tested this with the sample code given by Mickro electronica. I have worked on touchscreen and familiar with driving the touchscreen and reading the ADC values.
Issue appears to be on the driver circuit comprising of transistors and resistors. I have seen similar designs with different resistor values.
Any help is really appreciated.
Thanks,
Paul