This is a very simple arduino project where a led is turned on by setting the pin 13 as output, then write it with a high value, in our case that means that pin 13 will deliver 5 volts. Advertisement ...

I have used Red and Green LED’s. When node A is positive green LED glows while when node B is positive, Red LED glows. This indicates polarity of the input d.c voltage . 2) LED as a Continuity tester: ...

Evil Mad Scientist Labs brings us this easy to make LED blinking circuit. ... The project uses a 5W blue LED, the aforementioned bulb, and a 6V battery pack loaded with 3 AAA batteries.

Here are four easy afternoon DIY projects to make your home more sustainable. ... LED lighting. If you remodeled your kitchen or bath in California in the last few years, ...

Sometimes the most useful hacks are also the simplest ones. A case in point is the LED and resistor assembly that [Skippy] recently posted on his blog. The idea is to solder up some pre-made indica… ...

This boost circuit implements current mode control and senses the LED current via resistor R14. The output voltage is boosted to just over 30V to drive 10 LEDs at a regulated current of 0.35A. Often, ...

Perfect for a quick and practical DIY project. Make Toys. Craft Your Own USB LED Bulb: A Simple DIY Guide. Posted: September 6, 2024 | Last updated: July 10, 2025.