Introduction Gadgets and electronic devices have become a part of our lives. And, so are the batteries and their chargers. And, we all know that overcharging can destroy battery life. For a quick check of … Read more
lm3914
Introduction Have you heard of breathalyzer or Alcohol level tester gadgets before? They are gadgets that calculate how much alcohol a person has consumed. Basically, it aids in the detection of an intoxicated driver in … Read more
Alcohol Level Tester Bargraph MQ3
A VU meter or a volume unit meter is a device that displays the intensity of an audio signal in music equipment (loudspeaker, mic, electric guitars, amps, etc.). More specifically, it is used to visualize … Read more
Simple VU Meter using LM3914 Dot/Bar Display Driver IC
In this tutorial, we are developing a project of an Alcohol level tester bar graph. This circuit is very helpful for testing whether or not a driver is drunk. The circuit is easy to use, … Read more
Alcohol Level Tester Bar Graph – LM3914
Introduction: The battery is a source of electrical energy used in many electronic devices in different forms. It converts chemical energy into electrical energy. Battery monitoring is a device that is used to monitor the … Read more
Battery Monitor Circuit with LM3914 IC
We can consider the Volume Meter as an Equalizer, which is available in the Music frameworks. We can see the moving of lights (LEDs) as per the music. If the music is boisterous, the equalizer … Read more
LED VU Meter using LM3914 and LM358
Introduction Sometimes the visual indication of the battery is highly needed. Especially in the automotive industry where the designers are now working on battery-operated cars. Thus, it’s a significant task to work on the battery. … Read more
Battery Level Indicator using LM3914
The LM3914 is a monolithic integrated circuit that senses analog voltage levels and drives 10 LEDs, providing a linear analog display. A single pin changes the display from a moving dot to a bar graph. … Read more
LM3914 Bar-Graph Display Driver – Datasheet
A Battery level indicator (Battery Guage) is an electronic measuring instrument that indicates the immediate voltage level of any DC battery. It is a very common testing circuit, employed in various industries. So today, we … Read more
Battery Level Indicator using LM3914 – Electronics Projects
What is a Voltage Level Indicator? A Voltage Level Indicator is a simple electronic circuit that can indicate the voltage level between any two nodes in a circuit. It is a simple yet crucial electronic … Read more
Voltage Level Indicator Using LM3914 Dot/Bar Display Driver IC
In this tutorial, we are making an LM3914 Automatic 12V / Universal Battery Charger. The IC that we are using is LM3914 which is used to sense voltage levels of power supplies and batteries. But … Read more
LM3914 Automatic 12V / Universal Battery Charger
In this project, we will show you a battery monitor circuit that can utilize to monitor the voltage of 12V lead-acid batteries. For example, vehicle batteries. Here is a simple Battery Monitor circuit for a … Read more
Battery Monitor Circuit using LM3914 IC
The article presents a project of an “LED thermometer with a selectable temperature switch”. However, a thermometer is a device that estimates “temperature” or a “temperature gradient”. It is likewise the level of “coldness” or … Read more
LED Thermometer with Selectable Temperature Switch
An Audio Level Indicator (VU meter) or volume unit meter, are electronic devices that display the intensity of any Input audio signal, usually in musical pieces of equipment (Drum sets, mic, electric guitars, amps, speakers, … Read more