4 ms·
I wonder if this can be used to aid in per room presence detection.
I wonder if this can be used to aid in per room presence detection.
24ghz radar sensors are pretty damn accurate too (way better than the infra red based ones). About 10 bucks off aliexpress
e.g. count people watching TV for pay-per-view billing, https://news.ycombinator.com/item?id=43076335 https://news.ycombinator.com/item?id=43076335