Low cost, 5-inch portable touchscreen with HDMI resolution of 485x840, button control, and lighting effects.

1. Demo video: https://www.bilibili.com/video/BV1eH4y1Q7CA/?spm_id_from=333.999.0.0
2. Actual effect:
 
3. I'm not very good at drawing the shell, so it just covers the screen. I've open-sourced the project, so everyone can modify it themselves.
4. Open source materials
5. Also open source a minimal F6P6 system with OLED and a 1.4-inch LCD screen.
I. Hardware Overview
1. Power supply: 5V->3V3->1V8
2. LCD backlight driver circuit
3. LTC8619C peripheral driver circuit
4. HPD insertion detection circuit
5. CW32 peripheral circuit
6. Button control circuit
7. W2812 lighting control circuit
8. Ch554G touch to USB circuit
II. Software Overview
1. Consult the LCD driver, GT911, and LTC8619C datasheets to understand key communication timings, register configuration details, and register configuration methods. 2.
 
RGB working modes: RGB666, RGB888, etc. The LTC8619C and LCD configurations must be identical; different modes have different pins. Carefully check the datasheets before hardware design.
 
3. LTC8619C EDID parameter configuration involves using EDID configuration tools and EDID reading software to configure various parameters suitable for driving the LCD, such as clock frequency, RGB timing, I2S audio configuration,
 
etc.