As was mentioned last week hanging from a chandelier atr based stop sounds a bit confusing, so I thought I would illustrate.
This is a three minute chart from last week. The stops are using a 10 factor EMA of a 10 period ATR subtracted or added to the price using a 15 prior bar look back period. I picked the parameters to make it easy to see, not optimized for trading. Professor Donchians channel and the ATR are so you can see where the raw numbers come from. Donchain channel changes on the bar but the stop changes on the prior bar so they are slightly out of sync.
So at 11:00 about 1.5 points are subtracted from the the highest high of the prior 15 bars so the long stop is above the upper channel line. Similarly the same amount is added to the lowest low (lower channel) for the short stop. You can see how it freezes when price starts to rise .
I personally think it is a good stop for a trend follower like myself and it has lots of variables so you can waste days over-optimizing
