Power Monitor Dashboard

Power Overview

A simple view of your three-phase power. Numbers are hidden unless you ask for them.

Green means normal. Each card below explains one thing in plain language. Open "What does this mean?" for a short explanation, or use "Show technical details" for the raw numbers.

Assign the R, S, T and power/time channels in Settings to activate this overview.

Live Data

Real-time sensor readings from connected nodes

Time Range:

Waiting for data...
Connect your MQTT device to see live data

Real-time System Logs

Simultaneous live streams for MQTT Sensor Telemetry and Device System Events

MQTT Telemetry Logs

Device System & OTA Logs

Historical Data

Query and visualize saved measurements

Node From To

Connecting to database...

Size: 0 B / --

0 KB/s ETA: --

100% Raw Power Quality Snapshots

Automatic captures of all sensor channels when any configured power quality limit is breached

Node Metric From To Rows

ID	Timestamp	Trigger Channel	Metric	Value	Limit	Channels	100% Raw Actions
No power quality snapshots captured yet. Configure limits in the channel modal to enable automatic triggers.

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Snapshot Raw Telemetry Details

Complete 100% raw multi-channel state when a power quality limit was breached

Node ID	Channel Name	Voltage (V)	Current (A)	Power (W)	Energy (kWh)	Freq (Hz)	PF	Timestamp

Transient Spikes

Short excursions that recovered before the confirmation window. They are recorded but never raise a sustained alarm.

Node Metric From To Rows

ID	Timestamp	Node	Metric	Value	Limit	Duration	Readings	Actions
No transient spikes recorded yet.

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ESP32 Secure OTA Manager

Deploy cryptographically signed firmware over W5500 Ethernet

1. Upload Signed Firmware (.bin)

Drag & drop signed ESP32 binary or

Validates ESP32 Header (0xE7), app descriptor (0xABCD5432) & SHA256

2. Target Node & Deployment

Target ESP32 Device:

Available Firmware Release:

OTA Progress: Idle

IDLE

1. Trigger

2. Download

3. Verify

4. Flash

5. Reboot & Validate

Historical OTA Update Audit Trail

PostgreSQL audit records of successful, failed, and in-progress ESP32 OTA updates

Timestamp	Device ID	Status	Version / SecVer	Partition	Audit Message
Loading audit history...

Alert Settings

Deliver power quality alarms to Telegram. Admin login required.

Enable Telegram alerts When disabled, no alert is sent regardless of cooldown.

Forward ESP32 hardware alarm flags Send a message when a device asserts its own alarm flag.

Bot token Create a bot with @BotFather. Never shown to non-admin sessions.

Chat ID or @channel Numeric chat ID, or @channelusername where the bot is an admin.

Cooldown per channel (seconds) Minimum gap between alerts for the same channel.

Dashboard URL (for snapshot links) Base address used in the "View snapshot" Telegram button. Leave blank to use the server LAN address.

Power Quality Alarm & Snapshot

Enable alarms, set limits and choose whether a confirmed alarm captures a snapshot. Admin login required.

Channel

Power Overview & Timed Guard

Choose the sensors shown on the Overview page and set the balance, power factor and timed guard limits. Admin login required.

Phase mapping

R phase sensor S phase sensor T phase sensor Power/time sensor

RST imbalance alarm

Enable imbalance alarm

Voltage deviation (%) Current deviation (%) Power deviation (%) Confirm after (s)

Power factor correction

Target power factor

Correction uses S = V x I, Q = sqrt(S^2 - P^2), and the capacitor kVAR / microfarads needed to reach the target at the measured frequency.

Power limits - selected sensors (day / night)

Enable day/night power alarms

Day starts Day ends

Tick only the sensors you want watched, then set a day and/or night limit. The active limit switches with the day window. These raise the normal sustained alarm; they are separate from the timed alarm below.

Power/time alarm (one sensor only)

Enable timed over-power alarm

Day limit (W) Night limit (W) Countdown (s)

Applies only to the mapped power/time sensor. The countdown uses the day window above, starts when power reaches the active limit, resets when power drops, and raises one alarm at zero.

Database Maintenance

Delete stored rows or reset the application data. Admin login and password required.

Delete selected data

Delete

Days to keep

Only this channel

Type DELETE to confirm

Admin password

Rows are deleted permanently. There is no undo. Back up the database first if the history may be needed.

Danger zone

Clear monitoring data removes readings, snapshots, transient spikes, OTA logs and the settings audit trail, but keeps thresholds, phase mapping, Telegram and retention settings. Reset everything also clears those settings, restores defaults, and removes OTA metadata. Uploaded firmware files stay on disk.

Type RESET to confirm

Admin password

System Status

Live server resources and top processes

Waiting for data

CPU --%

Per-core data unavailable

Memory --%

Waiting for data

Disk --%

Waiting for data

Network Live throughput

RX 0 B/s

TX 0 B/s

Top Processes Sorted by CPU usage

PID	Process	CPU %	MEM %	RSS
Waiting for data

System metrics unavailable

Active Nodes

Connected: 0

Phase mapping

RST imbalance alarm

Power factor correction

Power limits - selected sensors (day / night)

Power/time alarm (one sensor only)

Delete selected data

Danger zone

Admin Authentication