Add a Modbus, MQTT, GPIO or webhook device to your IoT dashboard
Go to Devices → Add Device.
Give it a name and location label, then choose a protocol based on how it connects:
- It has its own internet connection and speaks MQTT → mqtt-direct.
- It's a Modbus/RS485 sensor on a gateway → rs485.
- It's wired to a gateway's pins → a GPIO, I²C, SPI, 1-Wire or UART device.
- It's polled over the network → HTTP.
- It pushes readings over plain HTTPS (no MQTT client — scripts, cloud functions, firewalled devices) → Webhook (HTTP push).
Some protocols shown in the picker — Modbus TCP, SNMP, CAN Bus and M-Bus — are marked coming soon while they finish hardware verification. You can't create devices with them yet; check the roadmap for status.
Fill in the connection fields for that protocol and define your tags (the measurements to read).
Save. For
mqtt-direct, a window shows the connection details:mqtt.synacl.com, port 8883, TLS on, plus the device's username and password. Copy them now, because they're shown once. If you lose them later, use Reset MQTT password on the device page. For Webhook, the endpoint URL and secret appear on the device's page right after creation.
New to the device model? Read devices vs. gateways first.