and you can’t usually obtain such peak currents from the microcontroller port. This Design Idea describes “Chipiplexing,” a method in which you need to add only N cheap, bipolar transistors. This ...

Serial 4- to 20-mA chips exist but are relatively expensive and require serial programming and involve microcontroller overhead. Most lower end chips lack dedicated serial ports and require ...

The obvious solution was to switch to another microcontroller such as a lower-power version, but this would mean rewriting and retesting the code, redoing of the printed-circuit-board layout ...

This 8051 microcontroller-based control circuit adjusts the speed of a small permanent-magnet dc motor via photosensors (see the figure). The circuit can find applications in light-tracking ...