Williams %R + EMA Trend-Based DCA Strategy MT5 EA
Overview
This EA trades Gold on M1 using Williams %R signals and trend confirmation with EMA 200. If the initial trade goes into a floating loss, it applies a DCA (Dollar-Cost Averaging) system to recover. It limits risk with stop loss options, cooldowns, and daily max loss rules.
General Parameters
- Asset: XAUUSD (Gold) 
- Timeframe: 1 Minute 
- Leverage: 1:100 
- Capital: $10,000 
- Lot Size: 0.01 (Adjustable)
- Trade Window (UTC+4): 11:00 Ð 16:00 (Adjustable & On/Off)
- Max Daily Loss: $100 (Adjustable)
- Cooldown After Max DCA Loss: 10 Minutes (Adjustable)
Indicators
- Williams %R Fast (Length: Period 9) Ñ Entry
- Williams %R Slow (Length: Period 28) Ñ Entry
- EMA 200 (Length: Ñ) Ñ Trend Filter
- EMA 21 & 50 (Length: Ñ) Ñ TP & SL Conditions
Trend Filter
- Price above EMA 200 ? Only LONG trades
- Price below EMA 200 ? Only SHORT trades
Entry Rules
Long Entry:
* ¥ Price above EMA 200
* ¥ Williams %R (9) and (28) both between 0 and -25
Short Entry:
* ¥ Price below EMA 200
* ¥ Williams %R (9) and (28) both between -100 and -75
Exit Rules
Take Profit:
* ¥ +3% profit of the current position size combining all open trades OR
* ¥ EMA 21/50 cross (both TP conditions toggleable)
Stop Loss:
* ¥ SHORT: price > EMA 50 + 1 pip
* ¥ LONG: price < EMA 50 - 1 pip
DCA (Recovery Logic)
DCA Trigger Condition:
* ¥ A new DCA trade opens when floating loss of the previous position reaches 2% of the margin used on that position (adjustable)
DCA Trigger Formula (with Leverage)
Let:
- Lot_Size = 0.01
- Leverage = 100
- Contract_Size = 100 oz (Gold)
- Gold Price = Current Ask price (e.g., 2000)
- Used_Margin = (Lot_Size ? Contract_Size ? Gold_Price) / Leverage

Then:
Trigger_Loss = Used_Margin ? DCA_Loss_Percent

Example:
Used_Margin = (0.01 ? 100 ? 2000) / 100 = $20
DCA Trigger at 2% loss ? 2% of $20 = $0.40
If floating loss ³ $0.40 ? Open another trade (same direction)
DCA Scaling Parameters
- Initial Lot Size: 0.01
- DCA Increase Factor: 1x
- Increase Factor Step: Every 5 trades
- After 8 trade do not increase the lot and use the same lot from 8th trade to future
- Max DCA Trades: 10
- DCA Cooldown (after full loss close): 10 minutes
DCA Exit Conditions
* ¥ If cumulative DCA positions reach +3% profit (3% calculate combining all open trades lots and when reach 3% of the trade size close all trades ) OR
* ¥ EMA 21/50 cross
* Close only if overall  open trades in profit 
Fail-Safe Exit
* ¥ If max DCA trades reached with no recovery ?
*    - Close all positions
*    - Record the loss
*    - Start cooldown
*    - Stop for the day if max loss hit
Daily Protection
¥ Stop trading if daily floating or closed losses ³ $100 (adjustable)