The desk connection for first install and direct development through Web Serial in Chrome-based browsers.
Capability
USB and online control
USB is the trusted desk connection. MQTT is the online path once the board joins WiFi and has an online user, full unauthenticated control, Guest UI, or Guest script configured. Both transports aim at the same project workflow: upload scripts, read logs, receive UI events, and inspect board state.
Connection Paths
The WiFi path for commands, responses, events, logs, status, and script uploads under the board topic root.
Online Access
01
Online users are configured in Settings
MQTT becomes useful once the board is on WiFi and access is configured deliberately. A named online user creates an encrypted sign-in path; guest and unauthenticated modes should be explicit choices.