![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhp2cHQnq3bXQAcO6ceiGYsBawK3vTs0YRlHNm1blVCixQ2KHBCfoxREJsFvf1voFHp0C-wVq2WYgfXTwXBIT8VIo20fiOlVMa6w8K4BgigkiFPq8-HcSrurcxHVFBGVuQN6QLEzQ9Z8mCu/s200/new_switch.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg5IKk5TM7yALQJVUOV5I_3kXTcqXB3zcnomUkNgGoVyBfsKr6Jc6OgAKpoDd2dffJPdOdjyPkTyAktMbvLBfJ1nCsCpzZFZvOeFXyvZTBKaODCn9P6fmOZFom5I7VZE2hEGTcRaeX6p1oE/s200/sw_installed.jpg)
Unfortunately the problem is still there. This is dangerous since you might drag a folder by accident and move it into another folder. This problem always happening to a first time touch-pad user with tapping function turned on.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgH5DwYeSxf9QhCdbK4O2rhec-LpkK83I6CWs2cuZIVUnu750juUGlpAMWdWMJY8MmZ4hLwrFEbwEXn-R_e6_ESocoaymXSmSJHWfx-IUF26vEtBUiskBe_GOJB1uJ_ttGK7BN8P3Jhd-kj/s200/dsldr_cap.jpg)
So next I’m thinking it maybe related to a noise in the circuit. So without any calculation, I try to salvage a capacitor that l can find from an old circuit board and solder it parallel to the switch.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiP0yvkswFp0irqAY9kypB-Jrw9T6_iqyWOGtxKlcis2Dg87EZaXoUEnNyTxhIl51ZVKITQQxj8IEhEnvsZnIpoXfmlFedK8yS2i0WAaHiQjjQzlW1Pe2hegA18lgLbaWnx9mMCN5LtfAaF/s200/cap_installed.jpg)
:-) Now it become “click and hold” for about 10 seconds. The capacitor value that I used to smooth the noise from the circuit is too big causing it to simulate “click and hold”. After measuring the capacitance it shows about 2µF. Too big maybe.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhoKbDnt0hALmqHJwYv9IZl1hTNsO0ZfeRdHZ8EvpUzaunfNq_2lvNO-VWIR-Br1n29IJ2kgvWrlg2DK9-FTYKHavEgO1FraU2Fpbvsy_KysyNCPexgZYJYfziDEAr87uBf6fWKkpDub-BO/s200/under_testing.jpg)
Next I try to find a capacitor with quite smaller capacitance value (~2nF). Maybe this will do. So I just replace it.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg9jdP-OJtS9pJMKZpNcMNOZvXBb554J-M_4PMSnDtgU2x-zYK1LuAK8L7bzJgbFZRn368zg5MtOAerBxks65DZEy82mj-frboGBlhObTL7_QK3yh_6Uk0xsO1OXcgw9TOiCt2QIhwr_jBq/s200/re_assembld.jpg)
Walla! At last like a brand new mouse looks and feel. Good luck.
0 comments:
Post a Comment