This circuit uses PNP types, but you can also use NPN devices ... are now nine possible combinations of the three microcontroller ports: the six available when using Charlieplexing to drive one LED at ...

For most of us, the solution to having a non-dimmable LED light bulb but needing a dimmable one is a simple as a drive to the store ... control of the lights via a microcontroller.

These are designed to pair with a microcontroller or some simple logic-level input, but [Alain Mauer] wanted was to bring touch control to a simple LED strip ... board uses an NPN transistor ...

This option is added deliberately so that we can enable/disable the Sleepy-LED Eye using the existing microcontroller (uC ... Such a configuration with an NPN transistor is obviously not a good ...

A way to apply the output of certain sensors to a TTL/CMOS-level iput on a microcontroller. Sensor must have an NPN output stage that can support a pullup to its power rail. With just a few ...

If the need arises to display measurements in both graphical and digital formats, an LED matrix display offers one of the best solutions. The MSP430G2452 16-bit microcontroller developed by Texas ...