EURUSD Trend Guard EA - Low Risk MQL4 Source Code for EURUSD

Summary: EURUSD Trend Guard EA is a low-risk MQL4 expert advisor for EURUSD. It uses EMA trend direction, ATR volatility filter, and fixed stop loss/take profit. Suitable for H1 timeframe.




EURUSD Trend Guard EA is specifically designed for EURUSD with a low-risk, stable operational approach. It incorporates trend filtering, volatility-based entry, and strict money management suitable for the moderate volatility and mean-reverting nature of EURUSD. The EA trades only in the direction of the major trend (EMA50) and uses ATR to avoid trading during extreme volatility. Each trade has a fixed stop loss and take profit, with a daily equity protection mechanism and spread filter.

Recommended Timeframe: H1
Trading Logic:
1. Trend Filter: Price above EMA50 → long only; below → short only.
2. Entry: After trend confirmation, wait for price to pull back to EMA50 with a confirming close.
3. Volatility Guard: ATR(14) > ATR threshold × 15 points → no new trade.
4. Risk Control: Fixed SL (250 points) and TP (400 points), max 1 trade at a time, daily loss limit 5%, maximum spread 25 points.

```mql4
//+------------------------------------------------------------------+
//| EURUSD Trend Guard EA |
//| |
//| |
//+------------------------------------------------------------------+
#property copyright ""
#property link ""
#property version "1.00"
#property strict

//--- input parameters with comments
input double LotSize = 0.01; // Fixed lot size (0.01 lot for EURUSD)
input int StopLossPoints = 250; // Stop loss in points (250 points = 25 pips)
input int TakeProfitPoints = 400; // Take profit in points (1:1.6 risk-reward)
input int TrendMAPeriod = 50; // Period of EMA for trend filter
input int ATRPeriod = 14; // Period for ATR volatility indicator
input double ATRMultiplier = 1.2; // ATR threshold multiplier (higher = fewer trades)
input int MagicNumber = 202412; // Unique EA identifier
input int MaxSpread = 25; // Maximum allowed spread (in points)
input double DailyLossLimit = 5.0; // Daily loss limit in percentage of balance (5%)
input bool UseCloseOnFriday = true; // Close all trades before Friday 21:00

//--- global variables
double dailyStartBalance = 0;
datetime lastBarTime = 0;
bool isFridayCloseExecuted = false;

//+------------------------------------------------------------------+
//| Expert initialization function |
//+------------------------------------------------------------------+
int OnInit()
{
dailyStartBalance = AccountBalance();
lastBarTime = 0;
isFridayCloseExecuted = false;
return(INIT_SUCCEEDED);
}

//+------------------------------------------------------------------+
//| Expert deinitialization function |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
{
Comment("");
}

//+------------------------------------------------------------------+
//| Expert tick function |
//+------------------------------------------------------------------+
void OnTick()
{
// Daily equity protection
double currentEquity = AccountEquity();
double lossPercent = (dailyStartBalance - currentEquity) / dailyStartBalance * 100;
if(lossPercent >= DailyLossLimit)
{
Comment("Daily loss limit reached. No new trades.");
return;
}

// Friday close before weekend
if(UseCloseOnFriday && !isFridayCloseExecuted)
{
datetime currentTime = TimeCurrent();
if(TimeDayOfWeek(currentTime) == 5 && TimeHour(currentTime) >= 21)
{
CloseAllOrders();
isFridayCloseExecuted = true;
return;
}
if(TimeDayOfWeek(currentTime) != 5)
isFridayCloseExecuted = false;
}

// Spread filter
if(MarketInfo(Symbol(), MODE_SPREAD) > MaxSpread)
{
Comment("Spread too high");
return;
}

// New bar logic (H1)
if(Time[0] == lastBarTime)
return;
lastBarTime = Time[0];

// Check for existing position
if(CountPositions() > 0)
return;

// Trend direction using EMA50
double ema50 = iMA(Symbol(), PERIOD_H1, TrendMAPeriod, 0, MODE_EMA, PRICE_CLOSE, 1);
double close1 = iClose(Symbol(), PERIOD_H1, 1);
double close2 = iClose(Symbol(), PERIOD_H1, 2);

// ATR volatility filter
double atr = iATR(Symbol(), PERIOD_H1, ATRPeriod, 1);
double atrThreshold = ATRMultiplier * 150; // 15 points reference (EURUSD typical point value)
if(atr > atrThreshold)
{
Comment("High volatility, no trade");
return;
}

// Bullish condition: price above EMA50, previous bar close > EMA50, bullish close
bool bullish = (close1 > ema50 && close2 > ema50 && close1 > iOpen(Symbol(), PERIOD_H1, 1));
// Bearish condition: price below EMA50, previous bar close < EMA50, bearish close
bool bearish = (close1 < ema50 && close2 < ema50 && close1 < iOpen(Symbol(), PERIOD_H1, 1));

double sl = 0, tp = 0;
int cmd = -1;

if(bullish)
{
cmd = OP_BUY;
sl = SymbolInfoDouble(Symbol(), SYMBOL_BID) - StopLossPoints * Point;
tp = SymbolInfoDouble(Symbol(), SYMBOL_BID) + TakeProfitPoints * Point;
}
else if(bearish)
{
cmd = OP_SELL;
sl = SymbolInfoDouble(Symbol(), SYMBOL_ASK) + StopLossPoints * Point;
tp = SymbolInfoDouble(Symbol(), SYMBOL_ASK) - TakeProfitPoints * Point;
}

if(cmd != -1)
{
int ticket = OrderSend(Symbol(), cmd, LotSize, (cmd==OP_BUY?Ask:Bid), 3, sl, tp, "EURUSD Guard EA", MagicNumber, 0, clrNONE);
if(ticket < 0)
Print("OrderSend failed: ", GetLastError());
}
}

//+------------------------------------------------------------------+
//| Count open positions with this MagicNumber |
//+------------------------------------------------------------------+
int CountPositions()
{
int count = 0;
for(int i = OrdersTotal()-1; i >= 0; i--)
{
if(OrderSelect(i, SELECT_BY_POS, MODE_TRADES))
{
if(OrderSymbol() == Symbol() && OrderMagicNumber() == MagicNumber)
count++;
}
}
return count;
}

//+------------------------------------------------------------------+
//| Close all orders for this symbol and magic |
//+------------------------------------------------------------------+
void CloseAllOrders()
{
for(int i = OrdersTotal()-1; i >= 0; i--)
{
if(OrderSelect(i, SELECT_BY_POS, MODE_TRADES))
{
if(OrderSymbol() == Symbol() && OrderMagicNumber() == MagicNumber)
{
bool result;
if(OrderType() == OP_BUY)
result = OrderClose(OrderTicket(), OrderLots(), Bid, 3, clrNONE);
else if(OrderType() == OP_SELL)
result = OrderClose(OrderTicket(), OrderLots(), Ask, 3, clrNONE);
}
}
}
}
//+------------------------------------------------------------------+
```
Reference: Original MQL4 code for educational purposes.
Disclaimer: Trading Forex involves high risk. This EA is provided as-is without any guarantee of profit. Test thoroughly on demo before live trading. Past performance does not guarantee future results.