Advanced 🌐 Networking

MQTT IoT Dashboard

Build a real-time IoT monitoring dashboard that connects to MQTT brokers via WebSocket. Subscribe to topics, receive live sensor data, and display it on beautiful Gauge, Chart, and Label controls. Perfect for monitoring Victron Energy solar systems, smart home devices, industrial sensors, and any MQTT-enabled hardware.

VB6 Python MQTT IoT Victron

Open This Example All Examples

What You'll Learn

Connect to MQTT brokers via WebSocket

Subscribe to MQTT topics and receive messages

Display live data on Gauge and Chart controls

Build real-time monitoring dashboards

Publish MQTT messages to control devices

Controls Used

Use Cases

Victron Energy monitoring
Smart home dashboards
Industrial IoT monitoring
Weather station displays

Code Preview

Here's a taste of the code. Open the full example in WebVB Studio to explore, modify, and run it.

Visual Basic 6

Dim mqtt As Object

Private Sub cmdConnect_Click()
    Set mqtt = Inet1.MqttConnect( _
        txtBroker.Text, "webvb-client")
    mqtt.Subscribe txtTopic.Text
    lblStatus.Caption = "Connected"
End Sub

Private Sub mqtt_OnMessage(topic, message)
    gaugeValue.Value = Val(message)
    lstMessages.AddItem topic & ": " & message
End Sub

Python

mqtt = None

def cmdConnect_Click():
    global mqtt
    mqtt = Inet1.MqttConnect(
        txtBroker.Text, "webvb-client")
    mqtt.Subscribe(txtTopic.Text)
    lblStatus.Caption = "Connected"

def mqtt_OnMessage(topic, message):
    gaugeValue.Value = float(message)
    lstMessages.AddItem(f"{topic}: {message}")

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