Portable energy storage power supply, also known as outdoor power supply, is a small energy storage device with a built-in lithium-ion battery. It can provide a power supply system with stable AC/DC v
Various types of wireless communication technologies support devices to achieve data communication between devices or between devices and serial port servers without cable connection, all of which are
The current usage is that two 12V systems from different sources share one relay (HF105F), and each 12V output is converted by a transformer and DCDC. The usage scenario is: each 12V system can drive
[size=3]The emulator that has been used normally on Windows 7 operating system cannot recognize the driver on Windows 7 after the emulator is upgraded to V3 firmware. After repeated attempts, there is
Since I have G D32C8T6 and 12864 LCD color screen, and some PCB manufacturers have very favorable policies, I decided to make a music spectrum display for fun.Design goals: small, low cost, battery po