RULES:
TIMEFRAME : 15mins above
BEST: 15MINS
1) wait for a candle and bollinger band(optional) to close below or above(outisde) of the envelopes.
2) take the trade when a candle crosses the middle bollinger band.
same rule applies for a sell setup
NOTE: price must attain its average daily range(ADR100%) when the candle and bollinger band (optional) are outside the envelopes, if not do not take the trade.
you can search for an indicator that shows you the ADR