Hacks of Electronics
In this article, you will learn to build LM3915 battery voltage level indicator. The LM3915 is a popular integrated circuit (IC) used in projects that require visual feedback on voltage levels. It’s widely applied in devices like battery monitors, audio level meters, and power supply indicators. This IC lights up a series of LEDs to show […]
Here is a simple proximity sensor circuit which shows proximity of an object by LED bar graph. Also, you will see two other simple proximity sensor designs. Proximity sensors are devices that detect the presence of an object within a certain range without any physical contact. They are widely used in various applications such as […]
Creating an LED VU meter using the LM3915 involves designing a circuit that converts audio signals into visual LED bar displays. The LM3915 is an IC that drives 10 LEDs in a logarithmic scale, making it suitable for audio level meters. A VU meter, or Volume Unit meter, is an audio visualizer that uses a […]