This dome integrates adjustable power supply, audio and video playback, and power bank. It uses a development board and uses a tft touch screen to display the operations that need to be selected. Use SC8815 to boost and lower the voltage synchronously, the battery is 8-connected 18650 in parallel, and the sw3518s circuit has a maximum fast charging output of 100W. When using the development board to adjust sw3518s, it can become a switching power supply of about 0~20. After transplanting the video player and file management, the videos in the SD card can be played. Work and play at the same time. And I plan to install an external soldering iron interface, so that I can travel with only one soldering iron tip.
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