Hi Darkstar,
Thanks for replying. A pity no answer is given. Also thanks for the tip.
However, I already know about the I2C multiplexer and used it with Raspberry PI. It is not ideal, I noticed that the multiplexer must be the only device on the I2C bus, apparently. I’ve tried to connect one OLED-display on the multiplexer and another one on the regular I2C bus… it did not work. Maybe it is the Raspberry PI and needs it further research. I’m a software- and not an electronic engineer.
Anyway, again thanks for replying, it helps.
Peter