kcchow 发表于 2014-5-29 08:49
need a reed switch!
kcchow 发表于 2014-5-29 08:49
need a reed switch!
aviro 发表于 2014-5-29 06:58
配个微型干簧管开关,可以实现。原理参考:http://baike.baidu.com/link?url=9I5VMCPRy2PjIi0rbBXf5cmj9AJE ...
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