iotta-simulator

Simulated IoT devices for testing and demoing iotta.

No hardware needed. Start the simulator, point iotta at it, done.

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Quick start

git clone https://github.com/iottahq/iotta-simulator
cd iotta-simulator
docker compose up --build

This starts:

• A Mosquitto MQTT broker on port 1883
• Two simulated temperature/humidity sensors (temp-sensor-01, temp-sensor-02)

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Connecting iotta

Add a device in iotta with these settings:

Field	Value
Protocol	MQTT
Host	<your-machine-ip>
Port	1883
Topic	iotta/devices/temp-sensor-01

The sensor publishes every 5 seconds.

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MQTT Topics

Each simulated device uses these topics:

Topic	Direction	Payload
iotta/devices/{id}/telemetry	device → iotta	{"temp": 22.4, "humidity": 61, "ts": ...}
iotta/devices/{id}/status	device → iotta	{"online": true, "uptime": 120}
iotta/devices/{id}/cmd	iotta → device	{"action": "ping"}

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Available devices

Device	Protocol	Description
mqtt_temperature_sensor	MQTT	Temperature & humidity sensor with realistic noise

More devices coming soon.

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Debug: watch live messages

docker run --rm --network host eclipse-mosquitto:2 \
  mosquitto_sub -h localhost -t "iotta/#" -v

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Environment variables

Each device can be configured via environment variables in docker-compose.yml:

Variable	Default	Description
MQTT_BROKER_HOST	mqtt-broker	Broker hostname
MQTT_BROKER_PORT	1883	Broker port
DEVICE_ID	temp-sensor-01	Unique device ID
PUBLISH_INTERVAL	5	Seconds between telemetry publishes