This is an adaptive channel scalper using Donchian channel with dynamically changed period. The Expert Advisor works well with traditionally flat pairs: AUDNZD, EURCHF, EURGBP, AUDCAD, etc. 

Trading by time is provided in the Expert Advisor's settings. For example, you can trade only during Asian and American sessions.

The product contains protection against an increased spread, which can expand during a rollover and news releases.  Also, there is a protection against reducing the leverage on Friday. 

The Expert Advisor is set for EURCHF M1. Trading is set for 24 hours a day.

• W_period - number of bars for calculating the channel's width. 31 on default. Optimization: 1/1/300.
• B_period - number of bars for calculating the channel's width. 184 on default. Optimization: 1/1/300.
• S_period - number of bars for calculating the channel's width. 96 on default. Optimization: 1/1/300.
• om - channel expansion ratio. 0.2 on default. Optimization: 0.05/0.05/10.
• Delta - channel expansion parameter. 46 on default. Optimization: 1/1/200.
• MM - position division ratio when the margin reaches stl level. 2.0 on default. Optimization: 1.1/0.1/10.
• stl - margin level, at which the position is closed partially. 65 on default. Optimization: 10/10/10000.
• TakeProfit - setting and modifying Take Profit at the channel boundary. It is used to fix profit without slippage. Under certain settings, this value can significantly affect the results obtained both by tester and in real trading. It cannot be optimized. The default value is false.
• Lot - if Lot is greater than 0.0, trading is performed using a fixed lot. The default value is 0.0.
• MaximumRisk - dynamic lot is enabled if Lot = 0. It is calculated as the maximum possible lot for opening an order * MaximumRisk. 0.04 on default. Optimization: 0.01 /0.01/1.
• begin - trading session start. 0 on default. Optimization: 0/1/24.
• end - trading session end. New orders are not opened. 24 on default. Optimization: 0/1/24.
• begin1 - trading session start. 0 on default. Optimization: 0/1/24.
• end1 - trading session end. New orders are not opened. 24 on default. Optimization: 0/1/24.
• typ_spread - spread limitation when closing SELL and opening BUY. It is recommended to set typical spread. Not optimized.
• mag - magic. Not optimized.
• GRAFICS - enabling chart display = false.