Comments on: ESP8266 Multisensor Shield with Node-RED

By: Bruno JACQUET

Bruno JACQUET — Tue, 26 Dec 2023 17:16:34 +0000

Hello, Ruy and Sara,
I ordered the printed circuits to carry out the Multisensor shield with Node-Red project and I noticed an error in the diagram and therefore in the printed circuit. Indeed the ldr pin on the left on the diagram is connected to 3.3V, but on the printed circuit it is connected to GND; similarly the resistor connected on one side to the ldr is connected on the diagram to the GND or on the printed circuit it is connected to 3.3V. All this means that the values given by the ldr are inverted.
Just to let you know.
Sincerely.
Bruno

By: PAOLO

PAOLO — Thu, 23 Feb 2023 14:38:12 +0000

Hello, I’m Paul ,I’m trying your project with node-red on PC, mqtt mosquitto, board Esp8266 nodemcu at the moment without any sensor. On the serial monitor everything is ok, but the message “Message arrived on topic” never appears: ” even if I change the output sato from on to off on the ui dashboard, while on the node-red it is ok.. Can you give me an answer? Thank you…

By: Sara Santos

Sara Santos — Wed, 05 Jan 2022 12:13:37 +0000

In reply to jeff.

Hi.
Yes, you can install node-red and mosquito on your computer.
Regards,
Sara

By: jeff

jeff — Tue, 04 Jan 2022 00:04:04 +0000

In reply to renzo giurini. Agree, I was thinking the same.

By: Bjarne Larsen

Bjarne Larsen — Sat, 26 Dec 2020 01:45:25 +0000

Hello i working on a project the i use this code on a ESP32
I need a code to Node-RED and ESP32 the i can get to now if the ESP 32 is on line with a commanded from Node-Red.
If i send a Commanded from Node-Red (Raspberry Pi) on the WIFI
i want to get a replay (ESP1 on line) (ESP2 on line) (ESP3 on line )

By: renzo giurini

renzo giurini — Thu, 02 Apr 2020 17:44:53 +0000

Hi Sara,
it is possible use this application without Rasberry, simply by PC?
Thanks,
Renzo

By: Sara Santos

Sara Santos — Mon, 14 Jan 2019 10:18:06 +0000

In reply to Olov Hilding.

Hi.
I think you’re missing Node-RED dashboard installation.
Go to this tutorial: https://randomnerdtutorials.com/getting-started-with-node-red-dashboard/ and follow the “Installing Node-RED Dashboard” section.
I hope this helps.
Regards,
Sara

By: Olov Hilding

Olov Hilding — Sat, 12 Jan 2019 15:00:59 +0000

Hi, When importing your Node Flow I’m missing the pallettes ui_switch, ui_text, ui_gauge and ui_chart. i.e. the blue ones in your picture. Do you know where i can find them.
(i’m running Node-RED on an WIN10 machine)
Regards Olov

By: Sara Santos

Sara Santos — Sun, 04 Nov 2018 11:40:06 +0000

In reply to Edgar.

Hi Edgar.
If you’re using our example, you just need to enter the MQTT broker IP address on line 17: https://github.com/RuiSantosdotme/ESP8266-Multisensor-Shield/blob/master/Code/NodeRED_ESP8266_Multisensor_Shield/NodeRED_ESP8266_Multisensor_Shield.ino#L17

If you’re having trouble setting up your broker on Raspberry Pi, take a look at the following tutorial: How to Install Mosquitto Broker on Raspberry Pi

By: Edgar

Edgar — Sat, 03 Nov 2018 22:50:42 +0000

Hi Sara,

I cant find where to enter mqtt_username and mqtt_password. Could you help me with these, please?

Thanks,

Edgar

……….
Attempting MQTT connection…failed, rc=5 try again in 5 seconds
Attempting MQTT connection…failed, rc=5 try again in 5 seconds
Attempting MQTT connection…failed, rc=5 try again in 5 seconds
Attempting MQTT connection…failed, rc=5 try again in 5 seconds
Attempting MQTT connection…failed, rc=5 try again in 5 seconds
………….