Liangshan school game console has no appearance value version

Based on the official game expansion version, the power module screen
is changed to 1.69 inches, 240×280 resolution, SPI interface, driver chip ST7789V ISP screen display effect is better than ordinary LCD screen. The power module input voltage is 4.65-5.5V, which will boost the lithium battery. To 5v output, 4 LEDs respectively display the different remaining power of the lithium battery. LED5 is equivalent to a small flashlight. The three resistors in the dotted line are the current limiting resistors of the LED. If not needed, these four do not need to be welded. The U17 button function is as follows: The maximum output of the DC-DC voltage stabilizing circuit is 600mA, so the power amplifier circuit has to limit the power. The speaker uses 4 ohms and 2 watts. The rocker uses a switch joycon joystick . The connector specification required for the joystick circuit is (5P 0.5 mm FPC: top connection and pull-out), the fixing screw copper column specification is M1.6. When not in use, you need to turn off the main power supply and turn off the power light to avoid the loss of lithium battery power after being left for a long time.