This indicator is very simple, but surprisingly effective, and I haven't found any mention of something similar, so here it is. I hope it helps you in your stock trading.
Someone made a comment in a trading room that the 8 am candle of the stock looked odd, so I quickly checked all the other stocks I had on my screen, and for all of them, the 8 am candle was...
This indicator applies Bollinger Bands to a line* that represents the difference in closing prices to produce buy & sell signals.
*Equation of line = close - previous close
Enjoy, and hit the follow button to get easy access to my latest indicators!