Double Donchian
The double donchian indicator is the association between two donchian channel, each with different period parameter. Using the fast and slow Donchian channels you'll be able to get long and short trading signals. When the price crosses the slow channel, open long or short positions. When the price crosses the fast channel again, close the positions. You may also use it as a trend indicator by checking the differences between channel 1 low and channel 2 low values and channel 1 and channel 2 high value. A set of 3 Fibonacci lines will complete this indicator.