This design idea (Figure 1) shows how easily “new flesh can be added to the old bones” and how some new functions can be added to the simple LED display that was published earlier. Figure 1 Upgraded ...

This flasher/beacon circuit can be employed as a distress signal on highways, a direction pointer for parking lots, hospitals, and hotels, etc. The circuit uses a power LED, and provides more light ...

If you've been experimenting with macro and closeup photography and been hesitant to shell out for an expensive ring flash, this cheap and simple ring light setup is worth checking out. Most of the ...