BTCUSD Trend Guard EA - Low Risk MQL4 Source Code for Bitcoin

Summary: BTCUSD Trend Guard EA is a low-risk MQL4 expert advisor for Bitcoin. It uses EMA trend direction, ATR volatility filter, and wide stop loss/take profit. Suitable for H4 timeframe.




BTCUSD Trend Guard EA is designed specifically for Bitcoin (BTCUSD) with a low-risk, stable operational approach. Bitcoin is known for extreme volatility, gaps, and sharp reversals. This EA uses a longer-term trend filter (EMA100), volatility-based entry (ATR), and very wide stop loss to avoid being stopped out by normal noise. Each trade has a fixed stop loss and take profit based on ATR multiples, with daily equity protection and spread control.

Recommended Timeframe: H4
Trading Logic:
1. Trend Filter: Price above EMA100 → long only; below → short only.
2. Entry Signal: After trend confirmation, wait for price to pull back within 1.5× ATR from EMA100, then enter on next bar open.
3. Volatility Guard: ATR(14) > 0.5% of price → reduce lot size by half.
4. Risk Control: Dynamic SL (2.5× ATR) and TP (5× ATR), max 1 trade at a time, daily loss limit 5%, maximum spread 100 points (1000 pips for BTC).

```mql4
//+------------------------------------------------------------------+
//| BTCGuardEA.mq4 |
//| |
//| |
//+------------------------------------------------------------------+
#property copyright ""
#property link ""
#property version "1.00"
#property strict

//--- input parameters with comments
input double LotSize = 0.01; // Fixed lot size (0.01 BTC = ~100 USD at 10k price)
input int TrendMAPeriod = 100; // Period of EMA for trend filter (long-term)
input int ATRPeriod = 14; // Period for ATR volatility indicator
input double ATRStopMultiplier= 2.5; // Stop loss = ATR * multiplier
input double ATRTPMultiplier = 5.0; // Take profit = ATR * multiplier (2:1 risk-reward)
input double PullbackDistance = 1.5; // Max distance from EMA (in ATR units) to enter
input double VolatilityReduceLot= 0.5; // If ATR > 0.5% of price, reduce lot by this factor
input int MagicNumber = 202413; // Unique EA identifier
input int MaxSpread = 100; // Maximum allowed spread (in points, BTC ~1000 pips = 100 points)
input double DailyLossLimit = 5.0; // Daily loss limit in percentage of balance
input bool UseCloseOnFriday = true; // Close all trades before Friday 21:00

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

//+------------------------------------------------------------------+
//| Expert initialization function |
//+------------------------------------------------------------------+
int OnInit()
{
dailyStartBalance = AccountBalance();
lastBarTime = 0;
isFridayCloseExecuted = false;
lastATR = iATR(Symbol(), PERIOD_H4, ATRPeriod, 1);
if(lastATR <= 0) lastATR = 100;
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 (crypto trades 24/7 but broker gaps exist)
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 for Bitcoin (brokers may have wide spreads)
if(MarketInfo(Symbol(), MODE_SPREAD) > MaxSpread)
{
Comment("Spread too high: ", MarketInfo(Symbol(), MODE_SPREAD));
return;
}

// New bar logic (H4)
if(Time[0] == lastBarTime)
return;
lastBarTime = Time[0];

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

// Get current ATR
double atr = iATR(Symbol(), PERIOD_H4, ATRPeriod, 1);
if(atr <= 0) atr = lastATR;
lastATR = atr;

// Volatility-based lot adjustment
double currentPrice = iClose(Symbol(), PERIOD_H4, 1);
double pricePercentVol = atr / currentPrice;
double actualLot = LotSize;
if(pricePercentVol > 0.005) // ATR > 0.5% of price
{
actualLot = LotSize * VolatilityReduceLot;
if(actualLot < 0.01) actualLot = 0.01;
}

// Trend filter using EMA100
double ema = iMA(Symbol(), PERIOD_H4, TrendMAPeriod, 0, MODE_EMA, PRICE_CLOSE, 1);
double close1 = iClose(Symbol(), PERIOD_H4, 1);
double close2 = iClose(Symbol(), PERIOD_H4, 2);

// Pullback detection: distance from EMA in ATR units
double distanceFromEMA = MathAbs(close1 - ema) / atr;
bool nearEMA = (distanceFromEMA <= PullbackDistance);

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

// Long condition: uptrend, price above EMA, near EMA after pullback, previous bar bullish
if(close1 > ema && close2 > ema && nearEMA && close1 > iOpen(Symbol(), PERIOD_H4, 1))
{
cmd = OP_BUY;
sl = SymbolInfoDouble(Symbol(), SYMBOL_BID) - (atr * ATRStopMultiplier);
tp = SymbolInfoDouble(Symbol(), SYMBOL_BID) + (atr * ATRTPMultiplier);
}
// Short condition: downtrend, price below EMA, near EMA after pullback, previous bar bearish
else if(close1 < ema && close2 < ema && nearEMA && close1 < iOpen(Symbol(), PERIOD_H4, 1))
{
cmd = OP_SELL;
sl = SymbolInfoDouble(Symbol(), SYMBOL_ASK) + (atr * ATRStopMultiplier);
tp = SymbolInfoDouble(Symbol(), SYMBOL_ASK) - (atr * ATRTPMultiplier);
}

if(cmd != -1)
{
int ticket = OrderSend(Symbol(), cmd, actualLot, (cmd==OP_BUY?Ask:Bid), 3, sl, tp, "BTC 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)
{
if(OrderType() == OP_BUY)
OrderClose(OrderTicket(), OrderLots(), Bid, 3, clrNONE);
else if(OrderType() == OP_SELL)
OrderClose(OrderTicket(), OrderLots(), Ask, 3, clrNONE);
}
}
}
}
//+------------------------------------------------------------------+
```
Reference: Original MQL4 code for educational purposes.
Disclaimer: Bitcoin and cryptocurrency trading carries extremely 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.