The long and winding road of Raspberry Pi 4
A new project requires a Raspberry 4. It should be easy to get it working, I thought. But as the devil is in the details, my morning bumped into several major showstoppers: It turns out the new RPi4 comes with a micro-HDMI. That, of course, is not hidden information but something I should have paid attention to in advance, but I did not. So it was now when I realize it was not possible to use any display for the initial configuration of the board or for any of my tests. I remembered that RPi's had a serial connection over the GPIO bus I could attach to. But it turns out that feature is now disabled by default on versions 3 and 4 of the RPi, as they use that hardware serial port for Bluetooth communications. It is possible to get it back with the enable_uart=1 line on /boot/config.txt Unfortunately, the brand new SD card I have got with the RPi4 did not work. I am not sure is was defective or whether it was damaged when trying to get it out from its packaging (Intenso brand in c