Other Parts Discussed in Thread: ADS1293, LP2985
你好,我是一名在校大学生,刚刚接触ADS1293问题多多,请问如果用ubs连接电脑,还需要外部供电吗?是不是只需要四根线将电极和输入端口连接,就可以用自带的软件测出心电图?万分感谢!
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我看电路图VDD应该是5V供电,但是我用usb供电,VDD测得只有3.3V,这是为什么呢?
LP2985变换成3.3V的。
就是EVM上的U5 U6