Keeping a record of the projects that you build is more important than you may think. Even if you have really well-commented code saved somewhere, or a schematic, it’s still really helpful to keep notes in a project notebook. Each of my projects gets written up in my notebook, which is open on my table …
When designing a sequential circuit with one or more clock signals, particularly circuits with either high-frequency clock signals, lots of wires, or both, noise can be a big problem! The circuit below from a past Digital Systems Design Project Showcase shows a good example of a circuit with lots of unwanted inductance caused by many …
Sometimes a 555 timer does not output a great square wave from 0-5 V. In this case, when using it as a clock source for a flip-flop, a bad 555 timer output can lead to missed clock pulses and seemingly strange behavior on the output. To correct this, use one or two Schmitt inverters (7414) …
I’ve decided to post a link to my blog. My goal is to start writing more about the digital logic and microcontrollers project that I work on, to act as help and inspiration for my students. Occasionally I also write about my other passion, which is flying airplanes. Don’t expect updates terribly frequently, however. 🙂