Yep, this can absolutely be done. Home wall chargers are just a fancy switch[1], you just need a way to enable/disable it. Could be a feature of the charger, but in the worst case you could add your own secondary contactor that removes power from the entire charger when you don't want the car to be charging.

[1]: They also have control pins to tell the car the maximum amperage they're allowed to draw, but that's not relevant to the feature of "disable the charger when I don't want it charging"

> but what's stopping the power/timing controls from being buttons on the charger wall unit?

The car makes all the decisions about how much power to draw and when to do it. Excluding the DC super/fast chargers, the hardware on the wall is pretty "dumb".

It's been pointed out elsewhere, but remote notifications are useful so you know it's time to get out of the public charger and let somebody else in (or to go back out and check on why it's suddenly stopped charging)

The specific regulation is here:

https://www.ecfr.gov/current/title-49/part-571/section-571.1...

Nor practical but an analog system could probably meet the standard.

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Rearview image means a visual image, detected by means of a single source, of the area directly behind a vehicle that is provided in a single location to the vehicle operator and by means of indirect vision.

Rear visibility system means the set of devices or components which together perform the function of producing the rearview image as required under this standard.

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5.5 just says it needs to meet certain testing standards, start displaying within 2 seconds of backing up, and stop displaying when driving forward.

FMVSS does in the US, but it'd have to be very steampunk to meet all the requirements.

A lot of delivery vehicles used to have convex mirror behind to give an idea where the bumper is.

> The vast vast majority of backup cameras ARE analog

The camera<->head unit signal modulation is analog but unless the display is a CRT, both ends of the system are digital.

This is basically why I was asking “what do you mean, analog” - I suspect the OP really wanted either no touchscreen or no telematics, which are totally unrelated to whether the systems are analog or digital.

There was a whole generation of very cool analog computer fuel injection (K-jetronic for example) that avoided most carb problems for end users without going full computer - but, there wasn’t a chance these kinds of system could continue to pass modern emissions standards.

The packet size is a major one. The lack of larger packets leads to nonsense like the "freshness manager" in things like AUTOSAR's SecOC, or the addressing scheme. Every subsequent CAN extension has tried to rectify both of these in different ways and inevitably failed, which leads to the next layer up the networking stack reinventing the wheel badly. Eventually you end up with UDS.

As I understand it, newer systems like LVCS and Ethernet use less wire and smaller connectors. Apparently it can save up to 30% of the weight in a wiring harness which would be about 100 lbs. There was a thread on it on HN not long ago.

Video for a backup camera is mandatory on new cars in the US and Europe, so it makes sense to use the same bus.