ESP-Now: multiple devices, but how to do multiple types of data?

This page summarizes the projects mentioned and recommended in the original post on /r/esp32
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  1. nanopb

    Protocol Buffers with small code size

    The OTHER way to do it is with protobufs, since they don't encode parts of the message that aren't included (that is: any missing part of the message has 0 transmission overhead). nanopb works well on the ESP32.

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NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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