Some 1.5 v LED flasher circuits are available on the internet and we like to present you four of them. The flasher circuits below operate on a single 1.5 volt battery. The circuit on the upper uses ...

Next-generation cellular telephones will include high-quality photographic capabilities. To support their improved image sensors and optics, they will need high-quality “flash” illumination, which ...

Camera shops usually will give disposable flash units away for free. The flash capacitor, output rectifier, and transformer are de-soldered easily for use in the new circuit. Parts of a throwaway ...

With cycling safety in mind, I bought a pair of low power red LED things that replace the bungs in the end of drop handlebars. They are a neat way to get a bit of extra visibility – and to give a ...

These days, if you want to flash some LEDs, you’d probably grab a microcontroller. Maybe you’d go a little more old-school, and grab a 555. However, [Jacob] is even more hardcore than that, as ...