Hi, just saw this...
We live out in the boonies and our front gate is about 900-feet line-of-sig ht from the house. The gate is always closed to keep cattle in so UPS/FedEx drops stuff in a large crate at the front gate.
Currently I have a large blue colored sheet that drops down when they open the lid to the crate and that works fine in daylight. But, unlike the lucky City folk, our spot on the single-delivery-per-day is near the bottom of t heir list, so our deliveries are more often than not after dark (8pm to 9pm ).
I am thinking that instead of voice in the above video, I just have the las er switch on when the crate is opened and the receiving solar panel at the house can show a light or ring a bell or something. Haven't figure that par t out yet.
But, looking at lasers online it is hard to know how far they will reach. C ost being an issue, I do not want to spend 90-bucks on a laser left at the front gate. We have more miscreants than cattle out here. :) The gate has a frame about 15' high for mounting the laser and I can mount the receiver o n a house vent pipe about 10' above the deck.
If I buy one that gets the distance at night, will it also still work in da y light providing I have a suitable box around the solar panel to shield it from a lot of sunlight?
Thanks
Dave