Utility for monitoring various sensors and displaying results as tray icon indicators. Written with C# (+WinForms) and requires .NET Framework 4.7.2+ to run.

The utility is portable (has no installer) and expects to be started with command line arguments:

[-c|--connect] -s|--sensor \"SensorType\" \"Key=Value\"* -i|--indicator \"IndicatorType\" \"Key=Value\"*"

where:

• optional -c or --connect makes sensor to autoconnect after run;
• -s or --sensor specifies assembly qualified name of SensorType. Also there could be some "Key=Value" pairs with sensor configuration settings;
• -i or --indicator specifies assembly qualified name of IndicatorType. Also there could be some "Key=Value" pairs with indicator configuration settings;

After successful start there will be indicator icon in the system tray. Tray icon has context menu with log view option to diagnose problems.

• Bluetooth HandsFree battery monitor -> BatteryTrayIndicator
• Spring Actuator Health endpoint monitor -> LampTrayIndicator
• PerformanceCounter monitor -> GraphTrayIndicator

Bluetooth HandsFree battery sensor uses HF Indicators feature as described in HFP V1.7 and Apple Specific features from Apple Accessory Design Guidelines

First, stop Windows Service 'BTAGService' (Bluetooth Audio Gateway Service) as it prevents connection to HandsFree device. Unfortunately, after this, your bluetooth device will not be usable as voice (HandsFree) device, but it can still be able to play audio or music.

Start TrayMonitor from command line (or shortcut link) with arguments:

-c -s Sensor.HandsFreeBattery.HandsFreeBatterySensor,Sensor.HandsFreeBattery "DeviceName=Mpow M5" -i TrayMonitor.Indicators.BatteryTrayIndicator,TrayMonitor

where DeviceName is the name of the paired handsfree bluetooth device to monitor.

After successful start there will be battery icon in the system tray with battery charge level or error mark. Tray icon has context menu with log view option to diagnose problems.

Start TrayMonitor from command line (or shortcut link) with arguments:

-c -s Sensor.SpringActuatorHealth.SpringActuatorHealthSensor,Sensor.SpringActuatorHealth "URL=http://localhost:8080/actuator/health" "Period=00:00:10" -i TrayMonitor.Indicators.LampTrayIndicator,TrayMonitor

where URL is url of the health endpoint, and Period is polling period (in TimeSpan format)

After successful start there will be lamp icon in the system tray with health status (GREEN - up, RED - down) or error mark. Tray icon has context menu with log view option to diagnose problems.

Start TrayMonitor from command line (or shortcut link) with arguments:

-c -s Sensor.PerfCounter.PerfCounterSensor,Sensor.PerfCounter "Period=1000" "Category=Processor" "Counter=% Processor Time" "Instance=_Total" -i TrayMonitor.Indicators.GraphTrayIndicator,TrayMonitor

where Category, Counter, Instance make up performance counter (see docs on Windows Performance Counters), and Period is polling period (in milliseconds)

• You can implement your custom sensor by subclassing Sensor.Core.SensorBase class
• You can implement your custom indicator by subclassing TrayMonitor.Core.Indicators.TrayIndicator class

See sources for details and examples.