Please be aware, the minimum value for traditional renko box size = 0.0001 so if you are using this indicator for trading with cryptocurrencies, it might be better to use ATR for that.
Can be merged together with main chart for better performance.
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In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.