The Plan The plan is simple enough. A Linux program listens to a real serial port and watches for special character sequences in the data stream.

A far more useful case is to provide a power supply for the microcontroller programmer, which has no wall wart. Today’s microcontrollers consume less current than their predecessors, so you can easily ...

Anyway, I was assuming that I'd have to go out of the serial port and into a microcontroller of some kind to turn the bitstream into a raw voltage corresponding to percentage of processor usage.

The most common way of programming AVR microcontrollers is the In System Programming port. That little six-pin header with MOSIs and MISOs coming out of it will program every AVR you’ll ever ...

Many industrial and instrumentationsystems need to measure theduration of pulse inputs, such as frequencyfrom rotational-speed sensors,gating and strobe pulses from externalsystems, and PWM ...

So I'm trying to detect through Visual Basic 6.0 when a voltage change occurs on one of the pins of the serial/parallel port. The whole thing is pretty simple; no data transfer/handshaking/etc ...