2023-11-08, 10:35 PM
I have just got a similar screen its a Digiwave HA-101ZIEBCAD1-V 10.1 inch projected capacitive touch 1280x800 HDMI LCD screen. The touch interface is enabled either via USB (which needs a special USB lead) or IC2. The main difference to Didier B's screen is that this one is daylight readable at 1250 nits. Its actually almost too bright to use indoors so I really need to dim this screen. I am still trying to find the solution but there is a 3 pin connector on the LCD Driver circuit board. Pin 0 is ground, pin 2 is PWM Pull up to 3.3volts and pin 3 is not connected. as I understand things thus far it is possible to connect this connector on the screen to two GPIO pins on the Pi the Pin 1 connects to any Ground GPIO pin and pin 2 I think to raspberry pi GPIO 13 physical Pin 33. Then you use software to modulate the apparent voltage on GPIO 13 well thats what I think thus far. So look to see if a similar GPIO connection is required on the Waveshare screen. I will let you know how I get on as this daylight readable screen looks like it will make a great plotter for the helming position if i can sort it out.