After updating the Crowpi 2 system this error occurs and the desktop cannot be displayed
Based on the issue and the photo you shared, it looks like the system upgrade didn’t complete successfully due to insufficient disk space, which may have caused the graphical interface to fail on boot.
To resolve this, we recommend the following steps:
1 Re-flash our official system image to ensure a clean and stable base system.
2 Before upgrading, make sure to allocate enough storage space. You can do this by:
Expanding the filesystem.
Increasing the swap size .
Using a larger capacity SD card.
After these preparations, you should be able to perform the system upgrade without encountering space-related issues.‘
Charging voltage of DC port
What's next after installing the Arduino IDE?All-in-one_Starter_Kit_for_Pico_2_User_Manual.pdf Page 10, “Course User Instructions” section
Downgrade the motherboard pico library from 4.5.1 to 4.2.0.
Enter bootloader mode manually by the following way.
Step 1: Press and hold the BOOT button, then press the RESET button briefly.
Step 2: First release RESET, then release BOOT.
In Arduino IDE, go to Tools > Port, select the port labeled “UF2_PORT”.
Valve A3 opens at the same time as A0, A1 and A0. This means that when any of the four sensors requests water and opens the corresponding valve, A3 also opens.
After identifying the problematic part, please exchange the sensors and test to see if any of the sensors is bad. If you confirm that the sensor is broken, then we will deal with it after-sale.
I buy a Display Esp32, I will like to know witch version of the examples I must use
For CrowPanel 7.0" -HMI ESP32 Display, look at the version number on the back of the crowpanel to determine which version of the program to use.
How to distinguish between positive and negative poles
“There's no positive or negative poles, as long as there's a current flowing through it, it creates a magnetic field that controls the switch, so there's no need to distinguish between positive and negative poles.”
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
I can't update the kernel version because I can't install wireguard to the gateway, but we need to use it remotely.
Our gateway code is not open source, so we can't install wireguard.
How do you get the speakers to output?
You can connect a speaker or headphones to the Raspberry Pi through the headphone jack or USB port to play audio
I installed the relevant libraries as per the tutorial on the Elecrow YouTube channel and the display works, but the image has noise issues.
You need to replace the content inside the 120m file we provided, refer to the product link for details.