Hello, sorry for the English,
@ Dirk:
So you find this to be a “cheap solution when you do not need a real bus for more than one sensor”? [-(
My I2C subroutines where carefully written by me to use I2C devices that incorporate I2C clock stretching (The IIC bus on the C-Control I v2.0 does NOT support clock stretching) and you can use these routines to communicate with any 7 bit addressable I2C devices connected to the I2C bus!!
This means that you CAN connect more than 1 I2C device/ sensor and use my I2C subroutines.
The examples provided by me in the download area are for demonstration purposes using the factory set addresses.

@ michiE:
Are you using a C-Control I v1.1 or v2.0?

Greetings,
H.J. Windt