diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..52d55de
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,7 @@
+
+.PHONY: run
+run:
+	go run cmd/agent/main.go
+
+lint:
+	golangci-lint run
\ No newline at end of file
diff --git a/internal/agent/agent.go b/internal/agent/agent.go
index 9ad8e83..7916f9b 100644
--- a/internal/agent/agent.go
+++ b/internal/agent/agent.go
@@ -323,12 +323,18 @@ func (a *computeBladeAgentImpl) Close() error {
 // runTopLedEngine runs the top LED engine
 func (a *computeBladeAgentImpl) runTopLedEngine(ctx context.Context) error {
 	// FIXME the top LED is only used to indicate emergency situations
-	a.edgeLedEngine.SetPattern(ledengine.NewStaticPattern(hal.LedColor{}))
+	err := a.edgeLedEngine.SetPattern(ledengine.NewStaticPattern(hal.LedColor{}))
+	if err != nil {
+		return err
+	}
 	return a.edgeLedEngine.Run(ctx)
 }
 
 // runEdgeLedEngine runs the edge LED engine
 func (a *computeBladeAgentImpl) runEdgeLedEngine(ctx context.Context) error {
-	a.edgeLedEngine.SetPattern(ledengine.NewStaticPattern(a.opts.IdleLedColor))
+	err := a.edgeLedEngine.SetPattern(ledengine.NewStaticPattern(a.opts.IdleLedColor))
+	if err != nil {
+		return err
+	}
 	return a.edgeLedEngine.Run(ctx)
 }
diff --git a/pkg/hal/hal_bcm283x_simulated.go b/pkg/hal/hal_bcm283x_simulated.go
index 5e4fb7f..1ca354d 100644
--- a/pkg/hal/hal_bcm283x_simulated.go
+++ b/pkg/hal/hal_bcm283x_simulated.go
@@ -21,6 +21,9 @@ func NewCm4Hal(opts ComputeBladeHalOpts) (ComputeBladeHal, error) {
 	logger := zap.L().Named("hal").Named("simulated-cm4")
 	logger.Warn("Using simulated hal")
 
+	computeModule.WithLabelValues("simulated").Set(1)
+	fanUnit.WithLabelValues("simulated").Set(1)
+
 	return &SimulatedHal{
 		logger: logger,
 	}, nil
@@ -32,6 +35,8 @@ func (m *SimulatedHal) Close() error {
 
 func (m *SimulatedHal) SetFanSpeed(percent uint8) error {
 	m.logger.Info("SetFanSpeed", zap.Uint8("percent", percent))
+	fanSpeedTargetPercent.Set(float64(percent))
+	fanSpeed.Set(2500 * (float64(percent) / 100))
 	return nil
 }
 
@@ -40,12 +45,18 @@ func (m *SimulatedHal) GetFanRPM() (float64, error) {
 }
 
 func (m *SimulatedHal) SetStealthMode(enabled bool) error {
+	if enabled {
+		stealthModeEnabled.Set(1)
+	} else {
+		stealthModeEnabled.Set(0)
+	}
 	m.logger.Info("SetStealthMode", zap.Bool("enabled", enabled))
 	return nil
 }
 
 func (m *SimulatedHal) GetPowerStatus() (PowerStatus, error) {
 	m.logger.Info("GetPowerStatus")
+	powerStatus.WithLabelValues("simulated").Set(1)
 	return PowerPoe802at, nil
 }
 
@@ -55,11 +66,13 @@ func (m *SimulatedHal) WaitForEdgeButtonPress(ctx context.Context) error {
 	case <-ctx.Done():
 		return ctx.Err()
 	case <-time.After(5 * time.Second):
+		edgeButtonEventCount.Inc()
 		return nil
 	}
 }
 
 func (m *SimulatedHal) SetLed(idx uint, color LedColor) error {
+	ledColorChangeEventCount.Inc()
 	m.logger.Info("SetLed", zap.Uint("idx", idx), zap.Any("color", color))
 	return nil
 }
diff --git a/pkg/ledengine/ledengine_test.go b/pkg/ledengine/ledengine_test.go
index 8e0f824..1185fc6 100644
--- a/pkg/ledengine/ledengine_test.go
+++ b/pkg/ledengine/ledengine_test.go
@@ -172,7 +172,8 @@ func Test_LedEngine_SetPattern_WhileRunning(t *testing.T) {
 	go func() {
 		defer wg.Done()
 		t.Log("LedEngine.Run() started")
-		engine.Run(ctx)
+		err := engine.Run(ctx)
+		assert.ErrorIs(t, err, context.Canceled)
 		t.Log("LedEngine.Run() exited")
 	}()
 
@@ -181,7 +182,8 @@ func Test_LedEngine_SetPattern_WhileRunning(t *testing.T) {
 
 	// Set pattern
 	t.Log("Setting pattern")
-	engine.SetPattern(ledengine.NewStaticPattern(hal.LedColor{Red: 255}))
+	err := engine.SetPattern(ledengine.NewStaticPattern(hal.LedColor{Red: 255}))
+	assert.NoError(t, err)
 
 	t.Log("Canceling context")
 	cancel()
@@ -210,7 +212,8 @@ func Test_LedEngine_SetPattern_BeforeRun(t *testing.T) {
 	engine := ledengine.NewLedEngine(opts)
 	// We want to change the pattern BEFORE the engine is started
 	t.Log("Setting pattern")
-	engine.SetPattern(ledengine.NewStaticPattern(hal.LedColor{Red: 255}))
+	err := engine.SetPattern(ledengine.NewStaticPattern(hal.LedColor{Red: 255}))
+	assert.NoError(t, err)
 
 	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Millisecond)
 	defer cancel()
@@ -220,7 +223,8 @@ func Test_LedEngine_SetPattern_BeforeRun(t *testing.T) {
 	go func() {
 		defer wg.Done()
 		t.Log("LedEngine.Run() started")
-		engine.Run(ctx)
+		err := engine.Run(ctx)
+		assert.ErrorIs(t, err, context.DeadlineExceeded)
 		t.Log("LedEngine.Run() exited")
 	}()