An Arduino project implementing a security alarm system featuring PIN code access via a 4x4 keypad ... or a hand-drawn schematic image in your repository and link it here for clarity). If an incorrect ...

Recently, ‘Liquid crystal display (LCD) vs. organic light-emitting diode (OLED) display: who wins?’ has become a topic of heated debate. In this review, we perform a systematic and comparative ...

Make the most of your work, games, or movies with the right monitor. Here's how to shop for a new display, plus the best productivity and gaming panels we've tested, backed by hundreds of deep ...

Linux: the ultimate Windows 10 upgrade? The bad news: Windows 10 is definitely going end of life this year. The good news: these Linux distros are ready and waiting to take advantage. APC tells ...

All the modules are powered with 5V from the Arduino. Below is the assembled image of the ... page, lastPage: Manage the LCD page display system. lastPageSwitch, pageInterval: Handle page switching ...

4 and 19 pins are used to adjust the display contrast through a resistor. I use a 1 Mega Ohm variable resistor. Acceptable contrast ~270kOm.

In just a couple of decades, smartphones have become indispensable in our daily lives. Read on for news, reviews and comparisons of the latest smartphones, tablets and e-readers.