An Expert Advisor Based on Bollinger Bands Needed

Trading Idea

The bot will simply place trades based on Bollinger Bands. It will open positions either based on reversals, breakouts, or both. Positions will be closed based on fixed take profit / stop loss points, trailing stops, or by the user. Most everything related to the bot is configurable by the user at start-up to keep the bot flexible. The bot will also use safety measures to check whether it should trade (e.g. are positions already open, margin level, performance of prior trades)

When I start the EA, I want to be able to configure:

 1. Whether the bot will trade only reversals, only breakouts, or it can trade either one

 2. The number of standard deviations used by the Bollinger Bands (from 1 to 3, with 5 decimals)

 3. The Bollinger Bands price to use (e.g. close, bid, etc.)

 4. The Bollinger Bands periods to use (e.g. 15, 20, 25, etc.)

 5. The Bollinger Bands MA Type (e.g. simple)

 6. The timeframe of the candles to use (e.g. 5 min, 10 min, 15 min, 30 min, etc.)

 7. Whether to create a take profit when a position is opened and if so, the distance from the opening price (e.g. 10 PIPS)

 8. Whether to create a stop loss when a position is opened and if so, the distance from the opening price (e.g. 10 PIPS)

 9. Whether to use position management (see requirement 16 below) and if so, how much (e.g. 10 PIPS). 

 10. Whether an opposite signal will (a) do nothing (b) close the existing position or (c) close the existing position and open a new one.

 11. How big a lot to buy

 12. Minimum percentage of margin that needs to be available (e.g. if set to 50%, it will only trade if more than 50% of margin is available). If not, it will not trade until a new signal occurs and at that time, sufficient margin is available.

 13. Whether the bot should shutdown depending on the result of the last X number of trades in the currency pair (e.g. if the last two were a loss, the EA will stop)

Positions are opened:

 14. After the candle with the signal closes. For example, assume candles are set to 15 minutes. The signal occurs during the 7:00 candle at 7:06 The bot does not open the position when the signal occurs, but only at 7:15, after confirming again that the signal is still valid for the 7:00 candle. This is to prevent false positives.

Positions are closed:

 15. Based on the configurations made by the user, as noted in requirements 7, 8, 9, and 10 above.

Position Management

 16. If activated by the user (see requirement 9 above), this is used to protect profit. Stop Loss is set if profit in points exceeds the value specified in the trailing stop parameter set by the user (see requirement 9). If a stop loss was set when the position was opened, it is removed. If the price continues to move in the profit direction, Stop Loss should be trailed at the given distance. Stop Loss cannot be moved towards the loss direction, i.e. the Stop Loss value cannot be increased. 

 

General requirements

 17. At startup, checks whether there is already a position open in that currency pair. If so, shuts down / will not trade.

 18. Regardless of how many signals occur, does not trade if the configured minimum margin is not available.

 19. Can run on any currency pair.

 20. Can run simultaneously for multiple currency pairs.

 

I want the EA in MQL4 and MQL5. I do want the source code for the EA.

Illustration is attached.