Whos video is this and do you have confirmation this is the process they used? I ask because i am very curious. Also when i did mine i found that just faulting the curcuit open with a normally closed switch did not work. I had to add 2 resistor paths one interrupted with a switch to get 2 different resistances through the curcuit or it got angry.
EDIT: i did not realize you retained the sensor. so nevermind on the second part of that. however, i am very curious if you get it working this way please let me know what settings you use. i will definately duplicate on my own setup. thanks.
that video sounds like it has a 2 step limiter of some sort
