Hello everybody, I have a problem with my mini2440 board and touchscreen. My touchscreen is very hard to touch, some time I get a incorrect coordinates. When I check with oscilloscope, I see large capacitive delays on the TS pins (long rise time) when touching. Anyone have a similar problem with 7 icnh touchpad? Also I have another mini2440 board with 3'5 inch TS - no problem with it. best regards, Sergio
Hi again! Anyone who has 7" TFT with mini2440 just tell here if you have some problems with touch panel on this TFT, please. I want to know where the problem, may be I have defected touch panel. thanks to all, Sergio
Hello, Same problem ! Using tslib-1.0 and 7 inch touchscreen. best regards,
I managed to partialy solve this problem by replacing two capacitors on the connector PCB. This is small PCB with soldered connector, which inserts in mini2440 LCD socket. There on the top part, where inserted the flat cable, soldered 2 capacitors 0.01uF. I have replace these cap. to 1200 pF and seems TS works much stable. best regards, Sergio
HI Sergio ! Can you please place a picture of the capacitor placement on the board ? Are you referring to the FriendlyARM or the LCD display board ? Thank you ! Claudio -