Bluetooth link open (closes after 2 min without sending).
Best: 64×16 pixels, one shared palette of at most 16 colours, up to 64 KB. The file is sent unchanged. Brightness does not apply to files.
Brightness applies to text, Game of Life and blobs. It is saved in this browser.
Public-transit departures
The Worker refreshes the next departures every minute, so the panel keeps running on its own. Sending any other picture to this panel switches this off.
Results
A stop has up to four poles: two directions, each with a tram and a bus pole. Pick the stop by name, then choose the direction and the transport. The map shows where the poles are (click a badge to choose it).
Direction
Transport (none ticked = everything)
Lines
What the panel will show
Advanced
Bluetooth: one-off demo upload. The panel counts down by itself for about 8 minutes, then stays on the last picture until you send again. Start departures (Worker) keeps it fresh without a phone.
ESP32
Image on the Worker
Worker connection
Events (newest first)
| Time | Event | Details |
|---|
The Worker keeps the last 200 events. Repeated "nothing new" checks (304) are not stored; they only update "last check-in". Low-level Bluetooth packets between the ESP32 and the panel are not reported by the current firmware – use the USB serial monitor for those.
Requests sent from this page
| Time | Request | Status | Took |
|---|
Connection
You only need this once. Everything is rendered in this browser; the token is sent only to the Worker URL you type here.