a 12 V battery; an LED diode; a 470 Ohm resistor, which works as protection and limitation for the LED diode; a 12 V buzzer. It emits an acoustic sound if it is electrically powered. As can be seen ...

Welcome to TechCrunch’s 2021 Holiday Gift Guide! Need help with gift ideas? We’ve got lots of them. We’re just starting to roll out this year’s gift guides, so check back from now until the end of ...

In a previous article, we explored the behavior of an LED diode as a small light source. We have seen how important a protection resistor is to light up this component. In this article, we will ...

YouTube has become much more than a source of entertaining videos. Nowadays, you can find plenty of practical videos in areas such as home improvement, auto mechanics, food preparation, and for the ...