What kind of sensor can detect whether there is someone in the room? I used to watch "24" and it was very powerful. Is there any instrument that can achieve this in reality? Please tell me, experts?
Fruit battery, no-load measurement 3V, about 100UA, then connect to MSP430 minimum system or connect a small SMD LED light, and measure the voltage and current at the two ends, just halved!, 1,.7 1.6
/*Correspondence between keyboard functions and scan values (function in front, scan key number in the back) |--------|--------|--------|---------| |1 (0)|2 (1)|3 (2)|Select (3)| |--------|--------|--
Our equipment has high-voltage discharge phenomenon, and the main unit equipment is discharged. The current confusing question is whether it is due to IGBT failure that causes overvoltage or overvolta
Symptoms are as follows: The video is stored in the IDE device as an *.avi file. When the video ends abnormally (such as power failure), the generated .avi file can neither be opened nor deleted. I wo