With a 555 on the BOM, you never know what you’re going to get. With 40 of the versatile timer chips in a build, you might just get something completely unexpected, like this 555-based eight-bit ...

Which bill counter is best? If you need to deal with large amounts of cash quickly, you need a bill counter. Using one can save you hours of work if you’re in the right job or own the right business, ...

Keeping track of time is essential, even for microcontrollers, which is why a real-time clock (RTC) peripheral is a common feature in MCUs. In the case of the STM32 family there are three varieties of ...