3 ms·
Haha HN, how did this post get downvotes? The second I read about "a switch needing two wires" I thought "Unless it's grounded." Interesting story, but hardly
by parfe 12y ago
Haha HN, how did this post get downvotes? The second I read about "a switch needing two wires" I thought "Unless it's grounded." Interesting story, but hardly "magic"
- mcphage 12y agoIs it common for one of the switch terminals to be electrically connected to the switch's container? That seems like a dangerous idea?
- parfe 12y agoCommon? Hell no! Obvious? Yes. For a switch to work a circuit must be present. Either a neutral line or a ground it is the only way to send information. If a functioning switch has only a single wire feeding into it then it must be reaching ground through other means.
- freyr 12y ago> If a functioning switch has only a single wire feeding into it then it must be reaching ground False dichotomy. You omitted a third option: magic.
- kbart 12y agoI suspected ground potential differences halfway through the article too, but I guess for web "hackers" out there it's equal to magic.