diff --git a/Claire.ino b/Claire.ino
index f9841ea..73f1846 100644
--- a/Claire.ino
+++ b/Claire.ino
@@ -270,6 +270,8 @@ static void setup_pins_proto_v1(void)
   ledMapIAQI = IAQI_LED;
 
   LIGHT_PIN = 34;
+  analogSetPinAttenuation(LIGHT_PIN, ADC_0db);
+  analogReadResolution(12);
 }
 
 void leds_clear(void) {