Making tachometers and speedometers

[tonyfoale]

.... And, now Tony, of all things, you have cast away ESP32 tech to tempt us with the Arduino world!

I used the Arduino Nano in this project because they are small and I had some. Also it is a task that the Arduino can handle with ease. Any new projects will probably be done with an ESP32, an Arduino on steroids.

So here is my problem. It is quite difficult to get good resolution on a high revving engine when all the tick marks are crammed into a 270-300 degree clock face. For example, if a shift point is around 9,500-10,000 rpm, usually everything (in my application) below 6,000-7,000 rpm is useless noise. I would love to display only the top 2,500-3,000 rpm in that same 300 degree window with the correspondly wider tick marks giving much better resolution. My apologies to our motorcycle friends for inferring that 10k rpm was a high number.

Easy-peasy.

Also, Tony, this tacho thread may take on a new life. Maybe its own thread would be suitable? And, THAN YOU for your always creative and interesting ideas.

th62 I do not want to hi-jack your bike building thread so would you prefer that I move any additional content to a new thread or keep it here? It is your call.