# Order Blocks Expert Advisor — EURUSD M30 (MetaTrader 5)
> Pine Script v6 → MQL5 cross-platform conversion with full mathematical indicator parity. Validated on 12 years of EURUSD M30 historical data (~3,300 operations).
---
## Overview
This Expert Advisor detects bullish **Order Blocks (OB)** on EURUSD M30 and executes long entries when price returns to a valid OB zone, with dynamic risk management and an optional dynamic Take Profit based on opposing bearish Order Blocks.
The project was originally written in **Pine Script v6** for TradingView and fully converted to **MQL5 native** for MetaTrader 5, with custom-coded indicators to guarantee mathematical parity across platforms — a non-trivial problem that breaks most naïve conversions.
---
## Key technical features
### Cross-platform mathematical parity
- Custom `PineATR()` implementing Wilder's RMA (Running Moving Average) — matches `ta.atr()` of Pine Script bit-by-bit, instead of relying on MT5's `iATR()` which differs in initial seed
- Custom `PineStoch()` with SMA-smoothed %K — matches `ta.sma(ta.stoch(...), 3)` of Pine
- Manual Choppiness Index implementation (no MT5 native equivalent)
### Modular filter architecture
Each filter block can be independently enabled/disabled for clean optimization:
- **Oscillators** (RSI + ADX + CHOP, range-bound)
- **Candle confirmation** (wicks, body solidity, volume, size vs ATR)
- **Premium/Discount filter** with persistent impulse tracking
Custom max function rejects optimization runs that fail any of:
- Minimum trades threshold
- Maximum equity drawdown
- Minimum Profit Factor
- Minimum net profit
- Minimum Sharpe Ratio
- Minimum Recovery Factor
When all thresholds pass, the optimizer maximizes `profit / equity_DD$` (recovery factor) — explicit reward for return-per-unit-of-pain.
### Visual auditing
- Live OB boxes (green/red) that extend in time while active
- Boxes are **frozen on retirement** (not deleted):
- **Aqua solid border** = OB that triggered an entry
- **Gray dotted border** = OB invalidated without entry
- This allows post-test forensic review of every signal
---
## Validation methodology
This EA was tested with rigor that is uncommon in retail trading code:
- **Calibration period:** 2025 (in-sample)
- **Out-of-sample 1:** 2026 H1 (same parameters)
- **Out-of-sample 2:** 2014–2024 (full multi-régime test, never seen during calibration)
- **Cross-timeframe validation:** same parameters applied to H1 and H4 without re-tuning
### Honest results — full 12-year backtest
The system shows clear positive performance during periods that match its design regime (trend / range-rotation on bullish EURUSD) and degrades during sustained bearish regimes (2015, 2017, 2019, 2021, 2024). The system is **long-only**, which is structurally insufficient for forex without a macro-regime filter.
Full 12-year backtest summary:
- Total trades: 3,347
- Profit Factor: 0.97
- Win Rate: 50.9%
- Net result: negative on full period
- Best year: 2025 (PF 1.92)
- Worst year: 2015 (bearish EURUSD)
**Conclusion documented in the validation:** the EA's logic is sound, its risk management produced no catastrophic individual losses (largest loss < 0.5R), but a directional system without macro-regime filter cannot be deployed live in forex as-is. A planned v2 will add a daily-SMA200 macro filter and optional symmetric short logic.
This README publishes the negative finding intentionally — the work of validating across 12 years and reporting the result honestly is more relevant to engineering quality than cherry-picked single-year results.
---
## File structure
| File | Purpose |
|------|---------|
| `OB_EURUSD_30M_2026_v107.mq5` | Main EA, V1.07 with modular block toggles |
| `LICENSE` | MIT |
| `README.md` | This document |
---
## Tech stack
- **MQL5** (MetaTrader 5 native)
- Originally **Pine Script v6** (TradingView)
- Validation done on broker M1 data and on OANDA feed cross-check
---
## About the author
**Brayan Rivas Campero** — MQL5 / Pine Script developer based in Cancún, México.
8 years building algorithmic trading systems across multiple instruments (Forex, indices, gold) and timeframes (M5, M30, H1, H4).
Specialized in cross-platform conversion (TradingView ↔ MetaTrader 5), quantitative validation, and out-of-sample multi-régime analysis.
