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Digital Speedometer
- Thread starter Mazfra
- Start date
+1
Your example actually supports why analog instrumentation is better for performance driving. Performance driving experts traditionally dismissed digital speedometers and particularly tachometers as toyish gadgets, preferring analog for the very reason that one has to read a digital display, processes the info (e.g. RPM as a number) relative to limits (e.g. "redline" as a number).
A needle can be glanced at quickly and the relative position (to redline) or other limits interpreted much faster on a dial face. Apparently, at one time this was proven over and over again by interface experts.
My guess is that the Bugatti probably has a manumatic anyhow, so how critical is the tach.
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- 2014 Mazda CX-5 GT AWD w/Tech
The infotainment system in our cars is pretty hackable if you know what you're doing.
Someone on another forum created an app for the system that gives you a digital speed readout, and in a graph with average speed.
http://mazda3revolution.com/forums/...714-infotainment-project-295.html#post1466322
Someone on another forum created an app for the system that gives you a digital speed readout, and in a graph with average speed.
http://mazda3revolution.com/forums/...714-infotainment-project-295.html#post1466322
Chris_Top_Her
Contributor
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- San Antonio, Texas
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- '15 CX-5 Miata AWD
I wish the NB1 was app based :/
Here's something that may help:
https://geoffonstuff.wordpress.com/2012/03/14/the-case-against-digital-speedometers/
It's bone simple to set up a digital speedometer using the data port but I'm not sure you would be happy with the update frequency and/or readability of rapidly changing digits.
The analog speedometer in my CX-5 measured speed is ~-2 MPH from reality at steady state. IMHO, instantaneous measurement under hard acceleration is not that important for me as a driver. The (quasi) steady state speed is what I need to make sure I don't get a ticket ...
Ironically, the Mazda 3 GT has a digital speedometer and analog tachometer where as lower trims have a analog speedometer and digital tachometer, which is displayed as a collection of small rectangles in a curve.
An older Honda Civic which is used in our household has a digital speedometer and so did a Prius we used to own. Both are very legible and easy to use. My wife, which used the Prius has her daily driver for several years had to adjust to an analog speedometer when we sold it. I remember she told me it takes her more time to tell the speed she was going with an analog device. Of all cars which were part of our household, the Civic's speedometer is the most accurate.
I don't think either device is necessarily more accurate or with less latency. In both approaches you can have them done badly or accurately.
Ironically, the Mazda 3 GT has a digital speedometer and analog tachometer where as lower trims have a analog speedometer and digital tachometer, which is displayed as a collection of small rectangles in a curve.
An older Honda Civic which is used in our household has a digital speedometer and so did a Prius we used to own. Both are very legible and easy to use. My wife, which used the Prius has her daily driver for several years had to adjust to an analog speedometer when we sold it. I remember she told me it takes her more time to tell the speed she was going with an analog device. Of all cars which were part of our household, the Civic's speedometer is the most accurate.
I don't think either device is necessarily more accurate or with less latency. In both approaches you can have them done badly or accurately.
You are correct, my bad. I went to Amazon and searched for "Digital Speedometer". It produced many options, direct-view and heads-up, GPS and ODB-II speed sources.
Rather than post links of any I thought were ideal, I think it best the OP duplicate my process and research accordingly.
+1, I was considering doing this myself. But beware, read the index thread (here - http://mazda3revolution.com/forums/...ronics/104730-index-infotainment-project.html) and read all the warnings first. If you're not confident working on the system, just leave it be. So many people crashing their systems with this mod because they don't fully read the instructions first.
I have a Garmin GPS mounted on the dash in the left corner close to the windshield. It blocks part of my view of the hood and none of my view of the road. I have it hard wired to go on and off with the ignition. It displays my speed and the speed limit. I find that it is my primary speedometer. When I am accelerating or decelerating quickly I ignore it and the stock analog speedo because I am busy In a perfect world our dash board would be a display screen and we could pick what we want on it as is done in the Tesla.
boandlkramer
US Specs in Europe
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- '17 CX-5 GT AWD; '18 BMW X3
BMWs 6 series has a completely digital instrument cluster (MFD), nothing analog.
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Nothing analog? Maybe "analog" means something else in your world but the photos you attached show analog and digital versions of both the speedo and the tach.
This is an ideal solution because it represents the information both graphically as well as digitally.
boandlkramer
US Specs in Europe
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- '17 CX-5 GT AWD; '18 BMW X3
Umm. So those arent virtual needles are they? There are no PHYSICAL NEEDLES. The entire cluster is a LCD screen which, in my world is digital, *dunno*
Im bored, back to the discussion about the mythical lag of a digital readout of speed. Id say BMW among other brands have debunked that.
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Im bored, back to the discussion about the mythical lag of a digital readout of speed. Id say BMW among other brands have debunked that.
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Correct me if I am wrong, but I thought the OP wanted the speed displayed digitally, as in numbers on a display screen, not "virtual needles". I have seen many electronic clusters with analog scales, regardless of the underlying technology.
The argument against digital speedometers and tachometers in performance cars is that under hard acceleration or fast revving, the digits are a blur, unreadable as they are changing too fast.
The virtual needles on an electronic instrument cluster compensate for the unreadable blur of digits, which is fine, but they are analog in the pure sense and by convention.
https://en.wikipedia.org/wiki/Speedometer
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Exactly!
Its just the display mate!! Nothing's analog there!
