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M5StickC - Improve IR range

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pgb
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Just tried the IR on a M5StickC (using esp-idf and rmt to send commands), and noticed the range is about 2 meters. Is there any way to improve it without adding hardware? (I know I can add a transistor and a IR led to get more current, I was wondering if there is a way to do so with the built-in IR led).
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