[postbg]2.jpg[/postbg][font=仿宋, 仿宋_GB2312][size=5]One night, a junior student asked me about an assignment given by the analog electronics teacher. It was to design a second-order high-pass filter wit
I am a newbie and just started learning zigbee. I am currently working on indoor temperature and humidity display, which is the simplest series. There are two terminals sending data to the coordinator
[align=left][color=#000000]Some time ago, I received a project to monitor [font=Calibri]XX[/font] data in a certain scenic area in Hangzhou. Since the area is relatively large, there are more than [fo