Web Interface

The OnSpeed controller runs a WiFi access point and web server. You configure, calibrate, and manage logs through a web browser on your phone, tablet, or laptop.

Connecting

1. Power on the OnSpeed controller
2. On your device, look for the WiFi network:
   • SSID: OnSpeed
   • Password: angleofattack
3. Connect to this network
4. Open a web browser and navigate to: http://192.168.0.1

You can also use the mDNS name: http://onspeed.local (may not work on all devices).

No internet while connected

When your device connects to the OnSpeed WiFi, it disconnects from your normal WiFi/cellular network. You won't have internet access while configuring OnSpeed.

Web Pages

Page	URL	What It Does
Home	/	Landing page with usage guidelines
Live View	/live	Real-time AOA gauge, attitude indicator, sensor data (WebSocket, 20 Hz)
Indexer	/indexer	Preact-based five-mode tablet indexer — same SVG layout the M5 firmware draws (Primary, Attitude, Indexer-only, Energy, G History). Runs over the same WebSocket as Live View. Useful for an in-cockpit tablet alongside or in place of an M5.
AOA Config	/aoaconfig	Main configuration page — flap settings, audio, EFIS type, orientation
Sensor Config	/sensorconfig	Sensor bias calibration and orientation setup
Calibration Wizard	/calwiz	Interactive in-flight calibration wizard
Logs	/logs	List, download, and delete SD card log files
Firmware Upgrade	/upgrade	Upload new firmware binary (OTA update)
Reboot	/reboot	Restart the controller
Format SD	/format	Erase all data on the SD card

Live View

The live view page (/live) shows real-time sensor data updated at 20 Hz via WebSocket. Numeric readouts (AOA, IAS, pressure altitude) are throttled to 2 Hz in the browser for readability; the SVG attitude indicator and AOA bar render on every frame.

The altitude readout is labeled PAlt — every altitude OnSpeed computes is pressure altitude (ISA 1013.25 hPa reference; no Kollsman/QNH correction). Don't expect it to match the panel altimeter unless your altimeter is set to 29.92.

• AOA needle position on a visual scale
• IAS, pressure altitude, G-loads
• Pitch and roll (attitude indicator)
• Derived AOA and pitch rate
• Current tone region indicators (L/Dmax, OnSpeed, Stall Warning zones)

Live view is for ground testing and debug

The live view is useful for verifying sensor operation on the ground and during calibration. Do not use it as a primary flight instrument — it requires a WiFi connection and a screen in the cockpit.

Performance Notes

• Static assets (CSS, JavaScript) are cached using ETags based on the firmware version. After a firmware update, your browser will automatically fetch new assets.
• The web server runs on ESP32 Core 0 (the connectivity core), so it doesn't interfere with flight-critical tasks on Core 1.
• Large file downloads from the /logs page will pause SD card logging during the transfer to avoid conflicts.

WiFi Range

The ESP32-S3's WiFi range is limited — typically 10–30 feet in open air, less through aircraft structure. For configuration and log download:

• Work in or near the cockpit
• Keep your device within a few feet of the controller
• If pages load slowly, move closer