gauravkothari23
Advanced Member level 2
HI all,
i am trying to make touch keypad using MTCH108 Capacitive Touch controller.
I have build the circuit, but the issue what i am facing is some of the pads shows less sensitivity than others. in total i have 10 touch pads, so i have used MTCH108 and MTCH102 to interfacing 10 touch pads.
and i have buttons from 0 to 9. 0 and 1 are interfaced to MTCH102 and 2 to 9 are interfaced to MTCH108. i am facing a problem in pad 6. the Sensitivity of pad 6 is quite low as compared to other pads from 2 to 9 as they all are connected to same IC MTCH108. can anybody please let me know what can be the issue.
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Here is my attached image of touch pad PCB.
i am trying to make touch keypad using MTCH108 Capacitive Touch controller.
I have build the circuit, but the issue what i am facing is some of the pads shows less sensitivity than others. in total i have 10 touch pads, so i have used MTCH108 and MTCH102 to interfacing 10 touch pads.
and i have buttons from 0 to 9. 0 and 1 are interfaced to MTCH102 and 2 to 9 are interfaced to MTCH108. i am facing a problem in pad 6. the Sensitivity of pad 6 is quite low as compared to other pads from 2 to 9 as they all are connected to same IC MTCH108. can anybody please let me know what can be the issue.
- - - Updated - - -
Here is my attached image of touch pad PCB.