I'm using this with the Powered Up hub (88009) to control forward and backward movement of my trains and so far it has been buggy, a combination of both software and hardware issues.
The distance sensor function works very well, and you can control the distance of the sensor from an approaching object to kick off a trigger. However, the color sensor has sensitivity issues and is a hit-and-miss (i would say 75% hit 25% miss). It also suffers from sensing a color that is not there. I placed it to read color tiles on a train track and it registers a trigger even if there is no color there. And in order to read a color, the sensor has to be within millimeters of the colored object. Also, not sure if it is with the Powered Up software, but after a few passes of the sensor with colors, it will ignore subsequent color reads and will stop working.
I would recommend this for distance sensor control but it needs major improvement with the range and sensitivity of the color sensor. Eventually I would like to make this work on a linear train track on my holiday village to make the train move back and forth controlled by colored tiles.
