Cm4

On my BIGTREETECH E3EZ i switched from the CB1 to the Raspberry PI CM4. Unfortunately on every boot the following message appeared: 1 brcm-pcie fd500000.pcie: link down The issue is the missing PCIe Port, hence you have to disable the feature to get rid of this message. Create the file disable-pcie-overlay.dts with the following command: 1 wget https://gist.githubusercontent.com/SirUli/de94ddb751b91adfa6809f286a18a382/raw/af010907360153f74edc8f65d415d717378bf037/gistfile1.txt -O /tmp/disable-pcie-overlay.dts You must then convert the file using the following command:...

When i received the BIGTREETECH E3EZ* together with a CB1* i was wondering how the pinout / gpio on the board was setup. Unfortunately the picture in the User-Manual of the E3EZ was relatively blurry. GPIO stands for General-Purpose Input/Output. It refers to the pins on a microcontroller or single-board computer, like the Raspberry Pi, that can be programmed to serve as either inputs or outputs. These pins enable the device to interact with the external world by receiving or transmitting digital signals....