This is a simple code for sending the PZEM-004t meter readings to an MQTT broker over WiFi using an ESP32 or ESP8266 microcontroller. The code uses the PubSubClient library for MQTT communication, the ...

The same data logged into the SD Card is sent using the MQTT protocol to the Raspberry Pi, which saves the data into a Postgres database. The project was developed using Arduino IDE 2.3.4 and all ...

In this paper are described how to make an IoT remote car diagnostic using Esp32 and MQTT. The data are getting from the CAN bus from the car and it is send to ...

PicoMQTT is a lightweight MQTT library for Arduino/PlatformIO optimized for ESP8266 and ESP32. It not only supports the MQTT Client mode like most existing solutions but also the MQTT Broker mode ...