I have had the hardest time getting my krakenrf to work.
I’ve tried it with many cables for both data and power, and all kinds of power supplies. I’ve also tried it using an RPi4, on a Linux PC, Linux laptop with a fresh OS install, and the virtual machine on both PC and laptop.
I just can’t get the kraken to connect to the software.
At this point I have to think it’s due to USB or power.
What are some cables, DC supplies, or batteries that you have used that worked well?
Have you tried powering on in stages? Try powering the kraken, wait about a minute, then power the pi4. I am using 2 pi4 power supplies. 1 for each device without an issue.
I am also using a pure sine-wave inverter to power the 2 pi4 power supplies in my vehicle with same setup and no problems either.
Seems odd that so many USB-C cables aren’t working for you. Back in the KerberosSDR days a lot of cheap microUSB cables wouldn’t work, but now that we switched to USB-C I’ve only ever come across one cable that couldn’t handle the high data rates, since USB-C cables are usually built to a better standard.
If possible try another Pi 4 or another USB port on the Pi 4. The Pi 4 USB ports themselves do sometimes become dirty/rusty or just faulty and that can cause issues.
Also please make sure you’re not just confusing the initial startup delay with it not working. On the first ever boot it could take a couple of minutes of waiting before any activity starts to show up on the web GUI.
When I was getting started, I connected a monitor to the Pi to watch it boot up. If you haven’t tried that, you might give it a shot. There are alot of messages displayed on the console during the boot phase. You might see what’s going on.
If you add a keyboard, you can log into the Pi and see if the Kraken is connected by looking for its USB devices. You should see 6 USB devices (IIRC) if the Kraken is connected and running. I don’t have one in front of me and I can’t remember exactly, so someone please correct me if I’m wrong.
That should tell you if the Pi is running and if the Kraken is running, or give you a clue where to look next.
I pulled my hair out trying to resolve flaky mobile operation and hangs using a variety of 12V USB-C adapters and C cables. It seemed to be power issues with the Pi4. Once I tried a **DC Buck Module, DROK Adjustable Buck Converter Step Down Voltage Regulator 6V-32V 30V 24V 12V to 1.5-32V 5V 5A LCD Power Supply Volt Reducer Transformer Module Board with USB Port Protective Case (Amazon) and SET TO 5.1-5.2VDC, the problems seemed to clear up. I don’t have a lot of hours on it yet (antenna/coax failures ) and it’s not my long-term solution, but maybe worth a try.