Around these parts, projects needlessly using a microcontroller where a simpler design would do are often derided with the catch-all “Should have used a 555,” even if the venerable timer chip ...

Around these parts, projects needlessly using a microcontroller where a simpler design would do are often derided with the catch-all “Should have used a 555,” even if the venerable timer chip ...

The Mostronome is a 1975 electronic metronome that reimagined musical timing with its whistle-like tone. This vintage circuit ...

Figure 4 Waveforms illustrating the operation of Figure 3’s circuit when it’s delivering ~500 Hz. The steps correspond to the 15th and 17th harmonics, which, though somewhat filtered by C4/R4, are ...

Calculate the frequency and/or duty cycle of an astable 555 timer.

Many top tax prep companies have a free tier for filers with a simple tax return, the most basic version you can file. A simple return is typically prepared using IRS Form 1040, with income from a ...

Maybe it’s always 5:55 when you happen to glance at the clock, or your oat milk and matcha combo comes to $5.55, or your dream apartment’s address just so happens to be located at 555 XZY Street.

A spate of killings of teenagers by a maniac dressed like a hippie causes a detective to check the records for similar killings. He discovers that every five years, in the fifth month of the year ...

Its small size makes it a great pocket-sized gaming device that you can take anywhere. To make this mini gamepad, you only need a few simple parts: a custom PCB, an OLED display, push buttons, and a ...

Sorting waste into the right categories, like plastic, glass, metal, or paper, is not as simple as it sounds. To make this tiresome job easier, researchers have developed a smart waste classification ...

Set up the perfect shot, then get in it yourself, thanks to the iPhone camera timer! Select the perfect camera delay to give you plenty of time to get into position. Tap the iPhone photo timer icon, ...