Uploaded March 2012 | Updated September 2026, 2 hours ago

---

Version 2.OH of my very successful sensor with even faster daylight sensing. This version was almost instant with darkness but took up to 47 seconds to detect light.

This works similarly to a lot of the light sensing devices in minecraft, but is built such that it has effectively the speed of 4. The 4 grass blocks die randomly, but the more you have the higher the chance you get a faster reaction.

This takes elements from ethos minecraft light sensor and a few others and is intended, as the video says, to be concealed underground.