So I've got my CB350 setup with a pretty sweet electronic ignition system that offers a tach-output wire. While I *COULD* have picked up a newer, more modern tachometer that took a digital input, the truth is.. I really like the way the stock tach looks. I think it's such a classic, defining element of the old Hondas and I didn't want to swap it out for some chintzy chromed up retro-wanna be tach.
But sure I'd love to jettison that big bulky tach cable. So I started researching my options and figuring out how I'd get this to happen.
I gutted the tach, and kept just the case, faceplate and needle.
Enter the laser cutter and some acrylic sheets.
Some trial and error, fitting the motor driver.
With the faceplate on top:
Finish up assembly. Then a bunch of coding on the Arduino to drive the motor from the input.
https://www.youtube.com/watch?v=DMgwbGH8ITU
But sure I'd love to jettison that big bulky tach cable. So I started researching my options and figuring out how I'd get this to happen.
I gutted the tach, and kept just the case, faceplate and needle.
Enter the laser cutter and some acrylic sheets.
Some trial and error, fitting the motor driver.
With the faceplate on top:
Finish up assembly. Then a bunch of coding on the Arduino to drive the motor from the input.
https://www.youtube.com/watch?v=DMgwbGH8ITU