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How to Write an Expert Advisor or an Indicator

MQL5 Source Code Library for MetaTrader 5 - 17

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This is the largest free source code library for MetaTrader 5 platform programs. Here you can find ready-made Expert Advisors, technical indicators, scripts and libraries. Use the code library when learning MQL5 language and develop your own automated trading applications based on the provided codes.

You can freely download and test published codes, as well as launch them in MetaTrader 5. The library is also available directly from MetaTrader 5 platform and MetaEditor development environment.

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Normalized MACD - of averages

Normalized MACD of averages

RSI Summed

RSI Summed

Bollinger bands - squeeze

Bollinger bands - squeeze

Squeeze - on chart

Squeeze - on chart candles or bars

Squeeze

Squeeze indicator

RSI swings

RSI swings

Aroon oscillator - multi time frame version

Aroon oscillator - multi time frame version

Aroon - multi time frame version

Aroon - multi time frame version

ConsecutiveRSI

Set the number of consecutive candles along with RSI level for a valid signal.

Kalman filter - with candles or bars

Kalman filter - with candles or bars, multi time frame version

Export trade history to CSV v2

This is the version 2 of my script to export the trade history from MT5 selected between two dates. The resulting file is CSV that can be opened/imported with any spreadsheet software. More columns were added and fixed minor errors. The code for processing and exporting data was rewritten.

Kalman velocity - multi time frame version

Kalman velocity - multi time frame version

Kalman filter - multi time frame version

Short description.

Kalman filter - generalized version

Kalman filter - generalized version

Trix pivots

Trix pivots

Rocket RSI pivots

Rocket RSI pivots

SSM RSI pivots

Ssm RSI pivots

Simple support resistance

Simple support resistance

Simple intraday support resistance

Simple intraday support resistance

T3 veocity tape

T3 velocity tape

Engulfing Stochastic

Detect bullish and bearish engulfing candles when entering the overbought or oversold territory. We have all seen a currency pair enter the overbought or oversold territory and stay there for long periods of time. What this indicator does is gives you the emphasis. So if you are looking for reversals then you may want to take notice when oversold territory is entered into with a bullish engulfing candle or if the trend is your thing then check for bearish engulfing candles while entering oversold.

CCI - double smoothed Wilder's EMA filtered with floating levels

CCI - double smoothed Wilder's EMA filtered with floating levels

CCI - double smoothed Wilder's EMA filtered

CCI - double smoothed Wilder's EMA filtered

Export trade history to CSV

This script will export the trade history from MT5 selected between two dates. The resulting file is CSV that can be opened/imported with any spreadsheet software. Current version 1.0 does not add the takeprofit and stoploss. Any advice to improve this is welcomed.

Bollinger bands breakout

Bollinger bands breakout

Bollinger bands extended

Bollinger bands - extended

Export Deals History V1

Export history of deals from MT5 retail hedging account selected between two dates. The resulting file is CSV that can be opened/imported with any spreadsheet software.

Simple harmonic oscillator

Simple harmonic oscillator

Simple harmonic index

Simple harmonic index

Wave period oscillator

Wave period oscillator

RMA - multi time frame

RMA - multi time frame version

M-oscillator - extended

M-oscillator extended

M-oscillator

M-oscillator

RMA

RMA average

Kalman filter velocity

Kalman filter velocity

Double smoothed EMA - floating levels (multi time frame)

Double smoothed EMA - floating levels (multi time frame)

Double smoothed EMA - floating levels

Double smoothed EMA - floating levels

Double smoothed EMA - multi time frame version

Double smoothed EMA - multi time frame version

VHF EA

A trading system based on custom indicator VHF.

Exp_SpearmanRankCorrelation_Histogram_TimeWeekPeriod

Expert Advisor Exp_SpearmanRankCorrelation_Histogram with the added option of trading within the weekly range only, the borders of which are specified in the EA's input settings