Guides

Hello world

Learn how to collect IoT device data using MQTT, HTTP or CoAP and visualize it on a simple dashboard. Provides variety of sample scripts that you can run on your PC or laptop to simulate the device.

mqtt http coap visualization helloworld

Getting started with Rule Engine

Learn about NDU rule engine and typical use cases you can implement. Review Hello World example and learn how-to enable filtering of incoming telemetry messages.

device management attributes

Connect devices using NDU HTTP API

Learn how to connect your devices using HTTP protocol and NDU built-in payload format.

http connect

Connect devices using NDU MQTT API

Learn how to connect your devices using MQTT protocol and NDU built-in payload format.

mqtt connect

Connect devices using NDU CoAP API

Learn how to connect your devices using CoAP protocol and NDU built-in payload format.

coap connect

Connect devices through NDU Gateway

Learn how to deploy IoT Gateway in your local network and route messages from your devices to the cloud.

gateway connect

Trip Animation widget

Learn how to display your devices with the latest telemetry data on the Trip Animation widget and modify the widget properties.

Validate incoming telemetry

Learn how to configure Rule Engine to discard invalid telemetry readings based on JavaScript filter function.

Telemetry delta calculation

Learn how to configure Rule Engine to calculate telemetry delta readings based on Originator telemetry rule node.

Data function based on telemetry from 2 devices

Learn how to configure Rule Engine to create new telemetry based on telemetry readings from multiple devices.

Transform incoming telemetry

Learn how to configure Rule Engine to transform incoming telemetry based on JavaScript function before it is stored to the database.

Transform telemetry using previous record

Learn how to configure Rule Engine to calculate “delta” of the counter readings based on current and previous reading.

Create & clear alarms

Learn how to configure Rule Engine to create and clear alarms based on incoming data from devices.

Working with Alarm details

Learn how to configure Alarm Details function in Alarm nodes and how to add an Alarm widget to the dashboard.

Send email on alarm

Learn how to configure Rule Engine to send email when new alarm is created.

Send email to customer

Learn how to configure Rule Engine to send email to the customer of the assigned device.

Notifications and Alarms on your smartphone using Telegram Bot

Learn how to configure Rule Engine to send notification using Telegram Bot when new alarm is created.

Create alarm when the device is offline

Learn how to create an alarm when the device is offline for a certain period of time using RuleEngine.

Check relation between Entities

Learn how the Check Relation node can be used to check the relation between Entities.

RPC Request to related Device

Learn how to send a remote request call to a Related Device using Rule Engine.

Using queues for synchronization

Learn how to use Rule Engine 2.5 queues for message processing synchronization.

Using queues for message reprocessing

Learn how to use Rule Engine 2.5 queues for message reprocessing in case of failure or timeout.

ESP32 Pico Kit GPIO control and DHT22 sensor monitor using NDU Arduino SDK

Contains wiring diagram, sketch and dashboard setup guide.

Humidity and temperature upload over HTTP using Arduino UNO, SIM808 Shield and HTU21D sensor

Contains wiring diagram, sketch and dashboard setup guide.

Temperature upload over MQTT using NodeMCU and DHT11 sensor

Contains wiring diagram, sketch and dashboard setup guide.

GPS data upload and visualization using LinkIt ONE and NDU

Contains wiring diagram, sketch and dashboard setup guide.

NDU BLE Demo with Raspberry PI, ESP32, Xiaomi MI and HTU21D sensors

Contains wiring diagram and dashboard setup guide.

Temperature upload over MQTT using Nettra RTU

Contains wiring diagram and dashboard setup guide.

Connectivity status

Learn how to track connectivity status of the devices: connected, disconnected, active, inactive