[問題] 電路板的孔洞不夠大，電線插不過去
大家好，我想將一般家庭牆壁線管中 2.0 mm 的單芯線焊到這個 relay module 上，
http://i.imgur.com/dVsWXvx.jpg
但是我發現那三個洞好像太小了，線可能穿不過去，請問大家知道該怎麼辦嗎？
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