THE VIDEO SHELF · automotive rain sensors
The simple, clever sensor behind automatic windshield wipers
Technology Connections explains how automatic windshield wiper rain sensors work, using an infrared light source and total internal reflection in the glass.
Why HN readers recommended it
Brought up in Tesla auto-wiper threads as the clear explanation of how simple conventional rain sensors work.
This is a summary from the source dataset, not an endorsement by Hacker News or the video creator.
Video & recommendation details
- Creator / channel
- Technology Connections
- Topic
- automotive rain sensors
- Format
- explainer
- Level
- general
- HN recommenders in dataset
- 2
- HN mentions in dataset
- 4
- Recommendation years in dataset
- 2024–2026
These counts and years describe the included Hacker News records; they are not YouTube views or the video’s publication date.
From the original HN conversations
Excerpts from the recorded comments. Follow each source for the full comment and surrounding discussion.
For anyone curious, Technology Connections has a good video on how traditional automobile rain sensors work: [VIDEO]
Stratoscope on Hacker News · 2024-05
In Tesla Auto Wipers: Why They Don't Work and Why There Isn't an Easy Fix> The parking sensors basically don't work at all due to being vision only - and apparently can't be made to work properly What's stupid about this is that it is hard to come up with a good reason for it. The no LIDAR thing …
tzs on Hacker News · 2026-01
In Tesla is committing automotive suicide
Summaries, classifications and recommendation records are from the HackerTube source dataset. Read about this library and its limitations.