Arduino Uno with MQTT Broker

0
votes

Is it possible for an Arduino Uno subscribe/connect to MQTT Broker (Mosquitto) without using Ethernet Shield or Wifi Shield?

Actually I have a Wifi module (ESP8266) with me, unfortunately it won't allow me to upload sketch and I keep getting error error: espcomm_upload_mem failed

When I interface Arduino Uno with ESP8266 Wifi Module, I construct like this: enter image description here

And I have included Generic ESP8266 Module in board manager.

1
arduinomqtt

1 Answers

0
votes

Is it possible for an Arduino Uno subscribe/connect to MQTT Broker (Mosquitto) without using Ethernet Shield or Wifi Shield?

Of course you need a network to handled a PubSubClient.h library for your MQTT Broker.

I keep getting error error: espcomm_upload_mem failed

I think you have something wrong about the wired or the code, can you post your schematic and your code into your question? so that i get why have this errors.

see this library.