ARDUINO RELAY HUB

4-Channel Hardware Serial Controller

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First time? Set up the USB computer

Download and extract the server package. Install Python 3.10+, then run start-server.bat on Windows.

Select your board's serial port. The local dashboard opens automatically; keep the server window open.

Use this page on the USB-connected PC and allow local network access when prompted. If blocked, open the local dashboard.

Download server package Open local dashboard

Global Commands

Trigger actions across all 4 relay channels simultaneously

CHANNEL 01 Relay 1
OFF
Pulse Duration
200ms 500ms 1s
CHANNEL 02 Relay 2
OFF
Pulse Duration
200ms 500ms 1s
CHANNEL 03 Relay 3
OFF
Pulse Duration
200ms 500ms 1s
CHANNEL 04 Relay 4
OFF
Pulse Duration
200ms 500ms 1s

Serial Activity & Response Log

00:00:00 SYS Relay Controller UI initialized. Waiting for commands...