Comments on: ESP8266 NodeMCU MQTT – Publish DHT11/DHT22 Temperature and Humidity Readings (Arduino IDE)

By: Bedez

Bedez — Thu, 16 Jan 2025 12:26:48 +0000

In reply to Sara Santos. Merci Sarah Sa fonctionne.

By: Sara Santos

Sara Santos — Thu, 16 Jan 2025 10:35:30 +0000

In reply to Bedez.

Hi.
Try moving the
void connectToMqtt() {
Serial.println(“Connecting to MQTT…”);
mqttClient.connect();
}

To a place before this line:
void onWifiConnect(const WiFiEventStationModeGotIP& event) {

Regards,
Sara

By: Bedez

Bedez — Thu, 16 Jan 2025 09:01:43 +0000

Bonjour,
Je comprends pas j’ai une erreur:
connectToMqtt’ was not declared in this scope; did you mean ‘connectToWifi’
pour cette partie de programme
void onWifiConnect(const WiFiEventStationModeGotIP& event) {
Serial.println(“Connected to Wi-Fi.”);
connectToMqtt();
J’utilise Visual studio code.
Je suis bloqué car je ne trouve pas la solution.
Merci pour votre aide.
Daniel

By: Sara Santos

Sara Santos — Wed, 03 Jul 2024 14:27:45 +0000

In reply to Roshan.

Hi.
Make sure you set your retain messages to true.
Regards,
Sara

By: Roshan

Roshan — Wed, 03 Jul 2024 12:53:47 +0000

I have follow your tutorial & works perfect. I have only one issue. I have publish topic with qos = 1, & also subscribe topic with qos = 1.
qos = 1 ensure that single time data will receive on subscriber.
i am transfering one numeric number 100 times, that time subscriber was disconnected with server,now i turn on subscriber & connect it but no last publish message received.
where i am making mistake?

By: Sara Santos

Sara Santos — Sun, 25 Jun 2023 10:40:36 +0000

In reply to Moss.

Hi.
You can’t install a broker on the ESP8266.
You can install on your computer, if you don’t want to install on a Raspberry Pi. Or you can also use a cloud mqtt broker.
Regards,
Sara

By: Moss

Moss — Thu, 22 Jun 2023 14:33:44 +0000

Hello, can I install an MQTT broker on my ESP8266 instead of using a Raspberry Pi? I have a simple project involving two load cells. Or should I get a Raspberry Pi for this purpose?

By: Bernard

Bernard — Mon, 12 Jun 2023 08:30:21 +0000

Hi. Thanks for the tutorials. I have learnt a lot. May I know do you have tried MQTT with SSL certificates? I am trying to figure out how it does with MQTT broker (raspberry pi) to client (esp8266).

By: name

name — Wed, 03 May 2023 11:41:51 +0000

will this work with homeassistant

By: Sara Santos

Sara Santos — Sat, 18 Feb 2023 10:40:11 +0000

In reply to Emmanuel.

Great!
Thanks for sharing the solution.
Regards,
Sara