MARVIN Non Repaint Indicator: Heikin-Ashi Plus %R

Written by Dominic Walsh · Published 16 Jun 2026 · Last updated 18 Sep 2026

The marvin non repaint indicator asks two different questions before it marks a bar. A smoothed Heikin-Ashi pair must flip colour, and Williams %R must be turning from the right zone. Momentum alone gives too many marks. A candle flip alone gives too many as well. Together they thin out.

This build ships as a compiled .ex4 for MT4 and .ex5 for MT5; the screenshots below come from EURUSD H1.

Platforms	MT4 (.ex4) + MT5 (.ex5)
Chart window	Main price chart
Plots	4: Marvin BUY, Marvin SELL, Marvin Trend, Marvin Signal
Alerts	popup, push notification, email, sound
Inputs	13

What gets drawn, and where

Marvin Trend is the dodger blue line carrying the internal candle close.

Marvin Signal is the orange line carrying the internal candle open.

Marvin BUY and Marvin SELL place lime and red arrows on a confirmed flip.

Arrows sit `ArrowOffsetPts` `8.0` points from the bar.

• Marvin BUY: arrow, lime, width 2, arrow code 233
• Marvin SELL: arrow, red, width 2, arrow code 234
• Marvin Trend: line, dodger blue, width 2
• Marvin Signal: line, orange, width 1

How the MARVIN NON REPAINT Indicator does its maths

Smoothing the candles

The internal pair runs through an exponential smoothing at `HASmoothPeriod` `6` bars. Plotting close and open as two lines lets you see the flip as a crossing rather than as a colour change. Blue above orange means the pair reads bullish.

Confirming with Williams %R

iWPR supplies the reading at `WPRPeriod` `14`. wprBuyOK needs the value above `WPRBuyLevel` and rising from below. wprSellOK needs it below `WPRSellLevel` and falling. So the flip has to come with momentum moving out of a zone, not into one.

Confirmation and cooldown

`ConfirmationBars` `1` sets how many same-direction candles must end at the signal bar. `CooldownBars` `3` then blocks another mark in the same direction for three bars. Both tests read completed bars only.

What it is telling you

The crossing of blue and orange is the candle flip made visible.

A mark means the flip also had Williams %R turning behind it.

Gaps between marks are often the cooldown rather than a lack of setups.

Raise `ConfirmationBars` when flips reverse a bar later.

Alert channels in this build: popup, push notification, email and sound, one message per closed bar.

`EnableAlerts` starts live, with the popup and the sound channel already true. `EnablePushNotify` and `EnableEmail` start false. `SoundFile` picks the clip. Tests read completed bars, and the guard permits one entry message per bar.

Every MARVIN NON REPAINT Indicator input

Core settings

Setting	What it does	Default
HASmoothPeriod	HA smoothing EMA period. Smoothing length on the internal candles, default `6`.	6
WPRPeriod	Williams %R period for momentum confirm. Williams %R length, default `14`.	14
WPRBuyLevel	WPR rises above this for BUY. Level %R must rise above for a buy, default `-70`.	-70
WPRSellLevel	WPR falls below this for SELL. Level %R must fall below for a sell, default `-30`.	-30
ConfirmationBars	closed-bar confirmation count. Same-direction candles required, default `1`.	1
CooldownBars	min bars between same-direction signals. Bars enforced between same-direction marks, default `3`.	3

Display settings

Setting	What it does	Default
ArrowOffsetPts	arrow distance from bar in points. Mark distance from the bar in points, default `8.0`.	8.0

Alert settings

Setting	What it does	Default
EnableAlerts	master alert switch. Master switch over the entry alerts, default `true`.	on
EnablePopup	popup alert. Terminal dialog when an entry prints, default `true`.	on
EnablePushNotify	push to mobile MT4. Mobile push when an entry prints, default `false`.	off
EnableEmail	email alert. Mail delivery when an entry prints, default `false`.	off
EnableSound	sound alert. Sound playback when an entry prints, default `true`.	on
SoundFile	Wav file used by the sound channel, default `alert.wav`.	alert.wav

Markets that suit it

Smoothed candles plus a momentum turn suit charts where moves last a while. EURUSD H1 is the reference chart. There `HASmoothPeriod` at `6` covers six hours of smoothing. On M5 the pair flips often and `CooldownBars` matters most. On H4 the marks turn scarce.

Where it lets you down

Smoothing on top of Heikin-Ashi averages price twice, so the flip lags the candle that caused it.

Williams %R can turn briefly inside a trend and satisfy the test without a real reversal.

`CooldownBars` `3` can hide a valid second entry during a fast move.

Copy the compiled MARVIN NON REPAINT Indicator file into your MQL4/Indicators folder, and the MT5 build into MQL5/Indicators, then restart the terminal and drag it onto a chart. The step-by-step guide with screenshots is at how to install MT4 and MT5 indicators.

Download the MARVIN NON REPAINT Indicator for MT4 and MT5

The zip holds the compiled MARVIN NON REPAINT Indicator build for MT4 and MT5, plus a short README. Compiled files only, no source. Enter your email below and the download link arrives in your inbox.

FAQ

What do WPRBuyLevel and WPRSellLevel mean?

They are Williams %R thresholds, and %R runs from zero down to minus 100. A buy needs the reading above `-70` and rising, which means it is climbing out of the lower zone. A sell needs it below `-30` and falling out of the upper zone.

Why smooth the candles with HASmoothPeriod?

To cut the number of flips. Raw Heikin-Ashi candles already average two bars, and a six-bar smoothing on top removes most single-bar colour changes. The cost is lag, which is why the momentum test has to agree as well.

What do the Marvin Trend and Marvin Signal plots show?

The internal candle close and open, drawn as two lines. Blue above orange is a bullish pair and the reverse is bearish. Watching them cross is a clearer way to see the flip than trying to judge candle colour on a busy chart.

How long does CooldownBars block a second mark?

Three bars in the same direction by default. On H1 that is three hours. It exists because a flip near a threshold often repeats, and without the gap the chart would carry three marks for what is really one event.

Are results guaranteed?

No. Trading involves risk. Results are not guaranteed; past performance is not indicative of future results. Use the MARVIN NON REPAINT Indicator as one input. Always backtest before trading live.