I’ve always appreciated simulation tools. Sure, there’s no substitute for actually building a circuit but it sure is handy if you can fix a lot of easy problems before you start solderi… ...

The Arduino simulator is a virtual representation of Arduino circuits in the real world. ... such as an oscilloscope and logic analyzer, Counter Time, and Virtual Terminal.

The Internet is full of low-speed logic analyzer designs that use a CPU. There are also quite a few FPGA-based designs. Both have advantages and disadvantages. FPGAs are fast and can handle lots of… ...