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I know it's just a meme, but an OBDII dongle --- even a cheap $10 Bluetooth one --- is super useful. You can read and reset the codes, and watch stats in real-time if so inclined.
My car doesn't have a reliable km/h gauge so I used an app to poll the speed of the car and show it up on my phone exactly in the way you described.
A GPS speedo would work too.
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A device talking to satellites in space is less exciting than some wire going to the engine 🤔
Gps is a standard, anyone can do it. ODB2 is a mishmash of vendor spesific magic dust, and trap doors. It is impressive if you find a device that handles any car.
The basic ODB2 stuff -- which includes the speed readout -- is a standard mandated by the government. It's stuff like being able to talk to other modules over CANBUS that's manufacturer-specific.
Are we twins?
would be cool if we are
The Bluetooth ones are definitely not as good as the dedicated ones but 100% better than nothing.
It's vital to know your own shit.
Hi, could you explain why? What's so good about the dedicated ones?
They typically offer more features and info for even only a few dollars difference...
...and my Bluetooth one died after a couple months just plugged in... Never had a standalone one do that.
For older Hondas you can nab a Honda Interface Module for like $100. Installing the nutty pirated software is another fight entirely.