<![CDATA[M5 Railroad Crossing]]>M5Stack で踏切作った。超音波センサで検知、サーボとLEDとbeep音起動。

Youku: http://v.youku.com/v_show/id_XNDAyNDgxNzQ4OA==.html?spm=a2h3j.8428770.3416059.10_1550023258033_htPSAeehp3Evy0aWJqx8mGWhP3AvrdA4.jpg

]]>https://community.m5stack.com/topic/606/m5-railroad-crossingRSS for NodeFri, 17 Apr 2026 16:05:27 GMTWed, 13 Feb 2019 02:01:09 GMT60