Hi George,
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re Onboard Loco Simulator
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Quite the project. Interesting. I agree -- wouldn't it be nice if such functionality could be built in to all decoders (assuming it didn't add a lot more cost). Perhaps it will come someday. The functionality of the ESP32-based technology is very impressive.
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In terms of your idea for ED buttons, in my limited experimentation, I came to the conclusion that your idea of using the DOWN button to invoke a given function (brake) would be handy. I might still lean to a horn-like momentary action rather than a latching action but that is hard to confirm without actually being able to try it.
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- John
