I've been wondering whether the Sensirion Humidity sensor SHT15 is I2C compatible or not. The info from the datasheet of SHT15 clearly says that it's not I2C compatible. --FAQ -Is your bi-directional 2-wire interface compatible with I2C ?
No it is not. The difference is in the start/stop sequence (transition start with SHTxx) and how the SHTxx humidity sensor signals the end of a measurement. SHTxx should not share a I2C bus with I2C components. However sharing of the SCK line and using a dedicated DATA line for the SHTxx humidity sensor will work well.
I thought Arduino Diecimila pins 4 and 5 are compatible for the I2c communication.
I hope someone could clear up my confusion. Thanks in advance.