It works as an oscilloscope, a logic analyzer, and a waveform generator. Not bad ... One analog input reads from -6 to 6V (hint: use a 10X probe). The goal was for the instrument to be accurate ...

[Giovanni Bernardo] has been experimenting with one of these, the internal frequency synthesiser on many PIC microcontrollers, and he’s produced a handy square wave generator for which he’s ...