If your daily driver was born without a tach, fear not – a simple Arduino tachometer is well within ... to a scrap of old credit card. The first LED lights at 4000 RPM, with subsequent LEDs ...

To actually power and control the entire circuit, [Martyn] used an Arduino loaded up with ... and warning indicators working with the LED bar array / tachometer, everything will look awesome.

Recently, we published an entry-level Arduino project with a single seven-segment LED display. Although it’s an amazing DIY project, we noted that most of the readers are looking for more advanced ...

8×8 LED Matrix modules are now widely available, and fortunately they are easy to use with our favorite Arduino microcontroller. 8×8 LED Matrix module have many applications in real life, such as ...