Designing astable circuits using the industry-standard 555 timer is a straightforward process when duty cycles are 50% or greater. However, you must overcome the many pitfalls of low-duty-cycle ...

He reads a voltage from a 555 timer using the ADC on the microcontroller ... The project is aimed at Arduino-based circuits, but any chip with an ADC will work. The 555 timer is used as a free ...

In this circuit, the renowned timer chip LM555 (IC1) is used as a PWM circuit ... The described circuit can be used to vary the speed of small electric PCB drill.The circuits can quite easily be built ...

Such was the case for one student, who had the canny idea to make a card that demonstrates his printed circuit board know-how. He used a 555 timer that outputs a clock to the LEDs on the biz card ...