How do I connect my CrowPi to an external monitor?
An external monitor can be connected using the Raspberry Pi's other HDMI port.
How do I control the brightness of this display?
Is there any other possible way to do this please? I've tried using I2C to constantly toggle the backlight on/off in a separate thread, but this method is too slow and causes the screen to flicker badly.
Is there a circuit control method for brightness adjustment that I have yet to understand?
The LED pin on the CrowPanel is connected to the pin on the pca9557. It is not possible to control the backlight through hardware pwm, only to control the light on and off.
CrowView Screen Extender doesn't display video signals anymore, it worked fine before!
1. Try changing the USB/HDMI port on the computer connected to the CrowView.
2. CrowView supports two different connection methods. Please try both methods to see which one works. Also, which connection method did you use before?
3.Please try to connect CrowView to another computer or cell phone to check if it works properly.
use the Display CrowPanel 7.0" -HMI ESP32 with EZZ Studio, always using LVGL.
There is some Wiki, video or trick that I should see or do?
Currently, there are no videos or courses available for the EZZ Studio platform. However, there are courses available for platforms such as Arduino IDE, SquareLine Studio, PlatformIO, MicroPython, ESP-IDF, Home Assistant, and ESPHome. You may consider using these development platforms as alternatives.
For related codes, tutorials, and more information about the CrowPanel 7.0" HMI ESP32 Display, please visit this page:
how do I hook crowpi up to an external monitor?
Use the other HDMI port on the Raspberry Pi to connect to an external display, and then make the relevant settings in the Raspberry Pi's operating system to realize the function of expanding the display.
CrowView Note power adapter broke.
Need to buy separately
Does pin 19 of the 3.5" HMI terminal screen support ADC?
ADC is not supported on pin 19 of the 3.5-inch HMI terminal screen; however, you can connect an ADC module to the I2C interface on the 3.5-inch HMI terminal screen to obtain analog values. (Pin 19 is already occupied by the TF card)
Getting the touchpad and keyboard to work at the same time, the function key seems to be always on, even when I close it with F1 (I can't type “I”, it always turns to “5”). Also, the connection between the device and the phone is very unstable.
1 Touchpad and Keyboard Use
The touchpad and keyboard can be used at the same time, but the touchpad may have been disabled. Try pressing F2 or Fn + F2 to enable or disable the touchpad.
2 Function Keys & Num Lock Problems
If Num Lock is enabled, pressing the "I" key may result in "5" being entered. Please press F12 or Fn + F12 to toggle Num Lock.
To enable or disable the Fn (function) key, press Fn + Esc instead of F1.
How the module works, I need a library or some way to use it, an example of how to use it correctly is enough
How the module works, I need a library or some way to use it, an example of how to use it correctly is enough
Please refer to the wiki page:
https://www.elecrow.com/wiki/lora-ra-08h-development-board.html