Comments on: ESP8266 NodeMCU MQTT – Publish DS18B20 Temperature Readings (Arduino IDE)

By: John

John — Mon, 07 Oct 2024 13:11:37 +0000

In reply to Sara Santos. Oops,, I missed that, thanks Sara.

By: Sara Santos

Sara Santos — Mon, 07 Oct 2024 08:15:31 +0000

In reply to John.

Hi.
Is is not available to download through the library manager.
You have to install it via .ZIP file as explained in the tutorial.
Regards,
Sara

By: John

John — Sat, 05 Oct 2024 16:05:14 +0000

When trying to use this Sketch in Arduino IDE 2.3.3, and running a compile check I get an error:
fatal error: AsyncMqttClient.h: No such file or directory.
It appears that is no longer a valid library name. I don’t even see it when searching for it in the library manager. Can You tell me what is now being used? Thanks

By: Mariller

Mariller — Mon, 02 Sep 2024 07:42:42 +0000

Hello and thank you for your site
thanks to you I solved esp8266/AsyncMqttClient.h/ with home assistant
I found a solution that blocked the sending or the card
if we used an analog input (A0)
by calling this function every minute
Friendships from France GM

By: John

John — Mon, 08 Jan 2024 16:16:45 +0000

Hey Guys, I’ve built this in the past with continued success. I have an Rpi 2b running node red and the mqtt broker that was available at that time. I wanted to replicate the system for bench testing new features, but now using either the Arduino IDE or Platform io I get a compiler error:
Compilation error: ‘AsyncMqttClient’ does not name a type
What am I missing? The (now) libraries are installed. Has something changed? Thanks

By: Herve

Herve — Mon, 27 Mar 2023 13:43:42 +0000

Hi, if you have configured an authentification for the connection with the MQTT broker, don´t forget in “Edit mqtt-broker node” “Security” to indicate your username and password, so that the “esp/ds18/b20/temperature” node can connect and receive datas.

By: Herve

Herve — Mon, 27 Mar 2023 09:07:33 +0000

In reply to Herve.

hi,
the problem was that i forgot to comment out this line
//mqttClient.setCredentials(“REPlACE_WITH_YOUR_USER”, “REPLACE_WITH_YOUR_PASSWORD”);
thanks

By: Herve

Herve — Mon, 27 Mar 2023 08:53:38 +0000

In reply to Đức.

hi Sara, Đức,
i have the same with DS18B20, packetId no change, stay at 0, and i have Disconnected from MQTT.
Connecting to MQTT…
Disconnected from MQTT.
Connecting to MQTT…
i think become from the code, not from the sensor.

By: Mike

Mike — Tue, 14 Jun 2022 16:30:12 +0000

In reply to Mike. I have a typo error, i have defined byte ledIntensity in the loop not globally.

By: Mike

Mike — Tue, 14 Jun 2022 16:28:10 +0000

The code works right out of the box but when I put e.g. an analogRead inside the loop(), but before the condition, something breaks and WiFi disconnects continuously.

The code added:
int LDR_PIN = A0; // LDR Sensor pin
byte ledIntensity;

void loop() {
byte ledIntensity = ledintensitySelect(analogRead(LDR_PIN));
if (now – lastMsg > 10000) {
….
}
}