I have always been interested in scanning galvanometers. I bought a second-hand scanning galvanometer and disassembled it to learn its principle.
Needless to say, the mechanical structure is a large i...
Some time ago, I looked at the free portal---Liferay. I couldn't get the hang of it, mainly because I didn't do it myself. . I was a little lazy, so I saw the following article today, which is also a ...
Abstract: One of the important indicators to measure the configuration and design level of Internet system is whether its UPS redundant power supply system has high "reliability", high "availability",...
Dear experts, I use PA12 of port A of STM32L073 as output driver to drive a Bluetooth module, which is equivalent to outputting a low level to wake up the Bluetooth module. I set the push-pull pull-up...