想做一个ds18b20的温度计，用USB接口供电，但不知道USB接口怎么焊接。各位高手发个电路图给讲解下，谢谢！

显示全部楼层 · 2010-5-5 11:54:25

把USB接线剪断,共有四条线,红色的,黑色的为电源线的正极和负极

千问 · 2010-5-5 11:54:25

cdsdrsrsrsrsrsthvhvgyerfguiegfurefgugurgurgu443hiu34yui4rygru3gh3rug3rug3urgu4g3rugfruegrujgrjgrjgrjgrjgrgrurugu4guhgu43gurgurgu4gu4gurgu5gurgurgrugrjfgvbrjhvbjhrfgguefguewnhfuewfduwefweufefhdvbhvvhvhvhervhvhervhvhrvcdhfhdvchdvchdvchrvhfvdchvrhc