If your daily driver was born without a tach, fear not – a simple Arduino tachometer is well ... signal – a signal sent from the Engine Control Unit (ECU) which tells one of the ignition ...

Instead, he reverse-engineered the mill and constructed a tachometer of his own. He opened the control box and started ... He hooked the line up to an Arduino and in no time had the RPM displayed ...

The whole lot is controlled by everyone's favorite robot brain, the Arduino. Both hardware and software will be open source. The machine is all-metal, both for longevity and to stop it from ...