Dashboard
Monitor sensors, control actuators, view analytics
Dashboard Overview
Navigate the LoopString dashboard layout, card grid, room tabs, and key features for IoT monitoring.
Reading Sensor Cards
Understand SensorStat cards including live readings, sparkline trends, alarm indicators, and unit conversion.
Controlling Actuators
Use ActuatorToggle cards to control relays and switches with staleness detection and timeout retry.
PID Controllers and Setpoints
Monitor PID controller status, adjust setpoints, and configure PID parameters from the dashboard.
Alarm Thresholds
Configure warning and critical alarm thresholds with hysteresis, notifications, and alert acknowledgment.
Room Tabs and Layout
Customize dashboard room tabs with icons, reorder cards, resize widgets, and save layout presets.
Sharing Dashboards
Create public read-only dashboard links with room filtering and expiration for sharing with others.
Analytics and History
View historical sensor data with multi-signal charts, configurable time ranges, and LTTB downsampling.
Device Config Backup and Restore
Export your device configuration as a JSON file for safekeeping, then restore it later or clone it to another device. Covers section selection, disaster recovery, and device cloning.
Conditional Logic Builder
Build IF/THEN automation rules that run directly on your Pi — turn on a fan when temperature spikes, alert when a pump runs too long, or chain multiple conditions with AND/OR logic.
Live Meter Mode
Live Meter mode temporarily switches a sensor from its normal reporting interval to real-time streaming, pushing every reading to the dashboard as fast as the hardware can produce it. Useful for calibration, installation verification, and hands-on troubleshooting.
Device Health Monitoring
Monitor your Raspberry Pi's CPU temperature, memory, disk usage, and network latency in real time from the Device Health panel on your dashboard.
Duty Cycle Tracking
Monitor actuator on/off runtime, view lifecycle progress, and receive automatic maintenance warnings when actuators approach wear limits or behave unexpectedly.
Activity Timeline
The Activity Timeline is a per-device audit trail that automatically records system events, user actions, and alert activity — giving you a chronological record of everything that has happened on your device.
Device Groups and Fleet Overview
Organize multiple Raspberry Pi devices into named groups and monitor your entire fleet at a glance from the Fleet Overview dashboard.
Anomaly Detection
Anomaly Detection automatically learns what normal looks like for each sensor and alerts you when readings fall outside that learned pattern — no manual threshold setup required.
Sensor Calibration Wizard
Correct sensor drift and inaccuracies without changing your hardware. The Calibration Wizard lets you apply offset, two-point linear, or multi-point curve calibrations to any sensor — with a live preview before saving.
Notification Center
Stay on top of sensor alerts with the in-app notification center — an alert inbox, unread badge, acknowledgment workflow, and configurable delivery preferences.
Scheduled Automation
Create time-based rules to automatically turn actuators on or off, change setpoints, and enable or disable PID controllers — without writing any code.
Dark Mode and Theming
LoopString detects your OS color preference automatically and supports a persistent light, dark, or system-matched theme you can set in Preferences.
Dashboard Search
Use the search bar and filter chips to instantly find and focus on specific cards across your dashboard — by name, signal type, room, or active alert state.
Unit Conversion Settings
Configure how sensor values are displayed across the LoopString dashboard. Set preferred units for temperature, pressure, volume, flow rate, and gravity without affecting how data is stored or transmitted.
Mobile Experience
How to use LoopString on a mobile device — swipe navigation between rooms, pull-to-refresh, long-press quick actions, the floating action button, and the bottom navigation bar.
Installing as an App (PWA)
Install LoopString directly on your device for a faster, fullscreen experience. The app works like a native app — it launches from your home screen without a browser bar.
Alert Escalation Chains
Set up multi-tier alert routing with escalation chains — configure contact channels, acknowledgment windows, and per-alert chain assignment.
Compliance Logging and Reporting
Generate HACCP, FDA 21 CFR 117, and USDA Cold Storage compliance reports with PDF export and scheduled automated generation.
Energy Cost Tracking
Monitor electricity usage and costs with live wattage, daily and monthly kWh totals, and configurable electricity rates.
Multi-Location Dashboard
Manage multiple physical locations from one dashboard with summary cards showing device count, online status, and active alerts per location.