Serial Monitoring In The Field

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I have a number of ESP32-based projects which are battery+solar-powered. If anything goes wrong with them, it can be a real pain to figure out what's wrong. While developing, I always add helpful Serial.print commands in the code. They're not much help when in the field, because the only way I have to read them is a PC. Sometimes you can move the whole thing and get the output, but I thought there…

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