> How completely unnecessary. I think you mis-typed "I find this unnecessary". It's additional information, located in the area on your display that you shoul

> How completely unnecessary. I think you mis-typed "I find this unnecessary". It's additional information, located in the area on your display that you should be regularly scanning, as opposed to the gear lever that you can check by hand but should probably not be regularly (nervously?) checking. I drive a euro 6 (forward) gear vehicle, and the ratio delta for gears 5 and 6 is really quite subtle. With even moderate music playing, I won't hear the 'motor screaming' if I forget to pop back up to 6 after being in 5 for some hill climbing, for example. Anyway, this isn't a manufacturer's video, it's a fun little arduino project, so you don't need to be angsty about excessive electronics in cars. (I think that boat has well and truly sailed, in any case.) Btw, my car does not beep when I change gear to reverse. If it did, I'd definitely be cutting some wires. I expect that some people think what they find useful, and what their local regulations dictate, are the same for everyone else across the planet.