As it is my first time that i am trying to make something with MQTT i have some general questions that would like clarifying them from more skilled users
My setup will be an Arduino Nano with 3 Analog sensors and a SIM800L module transmitting MQTT messages to a Raspberry Pi, MQTT Mosquitto server and Node Red Server just to read the incoming messages (not interested in subscribe to my Arduino Nano )
1st Question : Are any libraries for MQTT with Sim800l module? (if i remember well i have found only for sim800 shields )
2nd Question : How should i send the sensors values? through just in one publish session with the topics or have to send each value in a different publish transmission to the server ?
thanks in advance
PS: i wasn't sure if i had to place my thread to this forum section or in the "Project Guidance" section. Sorry