An ESP_32 based node for an Happy Bubbles presence server.
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Please set your wifi and mqtt settings in Settings.h
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Edit the PubSubClient max packet size in C:\Users$user\Documents\Arduino\libraries\PubSubClient\src\PubSubClient.h, set MQTT_MAX_PACKET_SIZE to 512 or more. Otherwise the mqtt publish won't work as the default max size is to low.