Re:If You’ve Got a New Car, It’s a Data Privacy Nightmare
by marcosdumay on Wednesday September 06, 2023 @10:54AM
(#37406083)
It shouldn't be expensive to make an I2C smart-switch that allows you to place as many buttons as you want on a single set of 3 wires (or 4 if you want a simpler circuit).
Re:If You’ve Got a New Car, It’s a Data Privacy Nightmare
by owenmarshall on Wednesday September 06, 2023 @10:57AM
(#37406121)
https://en.m.wikipedia.org/wiki/CAN_bus
Modern cars do it with two wires.
Re:If You’ve Got a New Car, It’s a Data Privacy Nightmare
by marcosdumay on Wednesday September 06, 2023 @12:10PM
(#37407167)
Hum, it's terminated with resistors on both sides, so the boxes need power. That makes it 4 wires.
I imagine there's very little difference on cost between 3 or 4 wires. But the number of nodes described is not really compatible with making each button its own node.
Yea; my cars interface has had 3 radical redesigns since I got it (which I mostly appreciate), but think of how much easier to build a Model 3 is when it foregoes 95% of a cars normal physical buttons for a single screen.