Recently I hit a blocker when using journalctl -b -1 did not work. Using the flags ended up in error
NetworkManager connection priority
I recently ran into an issue with my Raspberry-based radio node. I tried to connect to some othet WiFi access points and I realized that I had no idea how to set connection priorities if I have multiple candidates for connection. I was used with wpa-supplicant way of doing things which was just to add […]
I2S Raspberry Interface (4)
More work today. Some wires got loose and I did some experiments with .asoundrc and ALSA settings. I added a 39 Ω ballast resistor on SDIN and SDOUT lines and put a ferrite core on both wires. The radio node works as expected, absolutely no issues with one exception, a periodic pop that is audible […]
I2S Raspberry Interface (3)
Update July 11, 2025 Some thoughts and tasks today. The project is the same I2S interface.
Significant Svxlink power consumption
While testing my I2S project I ran into some boot issues on the Raspberry Pi 4 host. For what seemed to be some unknown reasons the boot process was completely chaotic, sometimes running well, sometimes hanging. I banged my head for some time looking for a solution until it came to my mind to change […]
I2S Raspberry Interface (2)
Update September, 2024. Activities and notes while developing the I2S interface for my radio node.
I2S interface for Raspberry Pi (1)
Today I managed to connect the Digilent Pmod I2S2 to a Raspberry Pi 4 and have all frequencies generated. This is part of an older project that I left abandoned for a while: a radio node built on Raspberry Pi and using Svxlink. As known, Raspberry boards do not have a proper audio interface and […]