User Manual
MDD400 v2.9 — Fabricated prototype, bench-test phase. V2.9 currently runs only per-peripheral hardware test routines; the production firmware that drives the operator-facing experience has not been written yet.
The User Manual covers the operator-facing workflow of the MDD400 — installation, page navigation, configuration, calibration, status indication, and troubleshooting.
The operator manual for the MDD400 V2.9 is not yet available.
The MDD400's operator workflow — page navigation, configuration, brightness and sensor calibration, alert handling, and troubleshooting — is delivered by the production firmware. V2.9 is a fabricated prototype that today runs only per-peripheral bench-test routines, so there is no operator-facing behaviour to document for this revision yet.
The MDD400's operator output is the helm-facing display; there is no status indicator on the front panel. The board's amber status LED (D2) is rear-facing — visible at the rear connector panel (where the NMEA 2000 cable enters) but not from the helm. Beyond technician bring-up, it gives an owner a basic power-good / fault check at the connector panel — useful before returning a unit for repair; the planned Fault-finding section below will cover how to read it. See LED Indicator in the Circuit Design section for its hardware behaviour.
This section will be published once the production ESP-IDF firmware is available and validated on V2.9 hardware. See the Firmware section and the Tasks page for the production-firmware status.
| Planned page | What it will cover |
|---|---|
| Quick Start | Connect to the NMEA 2000 backbone, mount at the helm, power on |
| Page Navigation | Moving between the display pages (power, engine, navigation, tanks, wind, alarms) |
| Configuration | Setting up the display via the touch interface |
| Calibration | Ambient-light brightness response and sensor setup |
| Common Pitfalls | Mistakes to avoid during installation and use |
| Fault-finding | Reading the rear-panel status LED and other on-unit checks to diagnose a fault before returning a unit for repair |
| Troubleshooting | Diagnosing and resolving common faults |