diff --git a/build-number.txt b/build-number.txt
index 1b1c131..209ac45 100644
--- a/build-number.txt
+++ b/build-number.txt
@@ -1 +1 @@
-280
+287
diff --git a/src/light_sensor.h b/src/light_sensor.h
index f3884f9..4ae31cc 100644
--- a/src/light_sensor.h
+++ b/src/light_sensor.h
@@ -6,14 +6,14 @@
 #include "pinning.h"
 
 // ADC polling interval in milliseconds
-#define LIGHTSENSOR_INTERVAL    10
+#define LIGHTSENSOR_INTERVAL    250
 
 // 'Forgetting factor' of the rolling brightness average
-#define LIGHTSENSOR_LAMBDA      0.95f
+#define LIGHTSENSOR_LAMBDA      0.9f
 
 // Bounds for converting absolute to relative brightness: Consider everything
 // near the minimum or maximum 0.0 or 1.0, respectively
-#define LIGHTSENSOR_LOW_BOUND   0.1f
+#define LIGHTSENSOR_LOW_BOUND   0.005f
 #define LIGHTSENSOR_HIGH_BOUND  0.9f
 
 extern float LightSensor_RelativeBrightness;