Presented here is a simple yet useful AC230V White LED light bulb with an isolated digital interface to control its on/off switching actions through a microcontroller or an external electronic circuitry. The design is based on inexpensive and popular discrete components widely available from almost all electronics component vendors. Shown below is the prefatory schematic… [Read More]

Inspired by a Chinese design, recently I built a small automatic LED night light with the help of a few generally available inexpensive components. Shown below is the base schematic of that automatic White LED night light runs on AC230V. Needless to say, an ambient light sensor is used in the design for day &… [Read More]