Posted in Arduino Hacks, clock hacks Tagged arduino, clock, digital gauges, ds1307, rtc, tachometer ← Inventors Chasing Their Dreams; What It’s Like To Quit Your Job And Hack ...

A tachometer used to be an accessory added to the dash of only the sportiest of cars, but now they’re pretty much standard equipment on everything from sleek coupes to the family truckster. I… ...