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蓝牙模块与单片机连接时如何供电

2025-04-08 10:25:42

推荐回答（2个）

回答1：

串口直接连接就行了，tx与rx
rx与tx，这个是个透传的串口蓝牙模块，ttl电平，可兼容3.3v/5v
使用之前先设置波特率，貌似默认是9600的

回答2：

5V电源经过一个LM1117-3.3V稳压给蓝牙模块不就行了。
用电阻串联降压是不行的。

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