ok, i got it working. For me it was a little weird to add a new device to a device. But it is working know. The thing i have noe is the instable output of the P1 itselfs. I have tested with several usb to serial adapters, same rubbish output with the cu or minocom interface. When i test it on my ...

Yes i did, but i can not find the answer. Can you provide me the part with answers to my questions?

Hello, I installed the rpi from scratch. I added the P1 Smart Meter USB at the hardware option. I tested the USB to serial with the cu (and minicom) command. The output is not readable. Is this normal or should it be readable? I tested with several configurations, 2 stopbits, parity odd / even, etc ...