Switch a lamp from your phone

Visualization → Dashboards → New dashboard. Name it Home, choose Mobile, and either keep Empty or Start from the Home template, which lays out a weather chip row, Living room, Kitchen and Bedroom rooms, and a Scenes section. Then Create and open.

In the editor, select the Living room section (or + Add a section and give it the style Room (summary + all off)), open the palette and click Home → Light.

In the inspector (Card: Light):

• Values read → Actual state (optional): a device metric that reports what the lamp really does. Without it, the card mirrors its own switch.
• Commands (sources for the flows): On / off is always there; tick Brightness for a PWM pin or Colour for an RGB strip.
• Appearance: a lamp icon, and Stale after (seconds) if you want the card to grey out when the board goes quiet.

Click Save. The On / off command now has a reference, #w-0001.power, and the control appears in Data → Controls, declared by your dashboard — with a No effect badge, because no deployed flow listens to it yet. Pressing the card at this stage records the value and nothing else.

Still in the card inspector, open Create the flow… under the On / off command: Target device… → your board, Output pin… → D4, then Create and open the flow. PNeX drafts Control — Ceiling light · power with two nodes, Control source → Device (write), and opens it in the flow editor.

The draft is not running. Read it, add what you like (a Debug node to watch the presses, a Notification when the light stays on after midnight…), then Save and Deploy.

Open the dashboard on the phone (the PNeX app or the browser): Visualization → Dashboards → Home. Tap the Light card: the switch writes the control, the flow writes D4, the LED lights up, and the card shows the actual state read back from the board.

• Details and history opens a bottom sheet with the card and its last 24 hours.
• The room header counts what is on and offers All off, which switches off every light, fan and switch of the room after a confirmation.

Create a flow with a Weather node (MET Norway, your latitude and longitude), wire current and 7 days to two Memory write nodes (weather.now, weather.daily), deploy, then add a Sensors → Weather card and pick those two keys. See Home cards.