Internet of Things/AWS Iot ESP32 Sensor - circa 2022

https://docs.aws.amazon.com/iot/latest/developerguide/mqtt.html

source: https://www.instructables.com/Arduino-Using-AWS-IoT-Serivce/

https://www.arduino.cc/reference/en/libraries/mqtt/

https://randomnerdtutorials.com/esp32-mqtt-publish-subscribe-arduino-ide/

• PENDING TEST RUN
• assumes node-red broker on raspberry pi.
• tls ?

https://www.emqx.com/en/blog/esp32-connects-to-the-free-public-mqtt-broker

• PENDING TEST RUN
• no tls mentioned username and pass , assumes
• arduino lib: PubSubClient by Nick O’Leary ( insert link )

https://www.valvers.com/open-software/arduino/esp32-mqtt-tutorial/

• PENDING TEST RUN
• arduino lib: Joël Gähwiler MQTT library. -I've already proved this lib has no tls support BOO!!!!