[i=s]This post was last edited by QWE4562009 on 2021-7-23 13:46[/i]CC2540 transmission power is not enough (for example, not enough to 0dbm), how can it be solved? The impedance is already 50 ohms.
When you send express, you may often see the courier holding a device that can scan codes and make calls. Later, I asked the courier and found out that it was called PDA. Let me say a few words based
The author of this book is Creed Huddleston, a senior sensor design expert. "Smart Sensor Design" introduces the design technology of smart sensor application systems, strives to combine theory with p
[i=s]This post was last edited by hau30729 on 2019-6-26 10:21[/i]I want to read an I/O signal from the outside. The signal can be High or Low. I originally wanted to use PC817 for isolation. The probl