DIY - 換水警報器 - 水族
By James
at 2017-06-06T20:19
at 2017-06-06T20:19
Table of Contents
懶得一直在旁邊顧,有時分心還差點忘記關水
用到電線.電池.蜂鳴器.開關
利用浮力來啟動蜂鳴器提醒
https://drive.google.com/file/d/0B3bWOPkxr1PARUVXMGJ6SE9vdDg/view
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用到電線.電池.蜂鳴器.開關
利用浮力來啟動蜂鳴器提醒
https://drive.google.com/file/d/0B3bWOPkxr1PARUVXMGJ6SE9vdDg/view
--
Tags:
水族
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