The IC LM3914 based 12V Battery Level Indicator Circuit shows how much battery charge is left, also it works well with 12V battery-powered devices and helps prevent sudden power loss. IC LM3914 senses voltage and control 10 LEDs , it show in dot mode or bar mode and also it work with 3V to 25V […]
Indicator Circuits
3 LEDs Battery Status Indicator Circuit
To begin with, battery status circuit is very useful in electronics systems, it helps keep battery healthy and working good in devices. 3 LEDs Battery Status Indicator Circuit is simple but works well and it shows battery voltage using three lights and each LED shows different voltage. Also, we can see if battery is low, […]
Voltage Level Monitoring Circuit using IC LM339
Voltage Level Monitoring Circuit using IC LM339 very important in modern electronics, as it helps system work correct, so to see voltage in real time we need to use voltage level readout circuit. Also, this circuit uses LM339 comparator IC for accurate voltage check and stable reading. Main parts are LEDs that show voltage level […]
Simple Heartbeat Monitor Circuit using Arduino
In this post we will show how to make Simple Heartbeat Monitor Circuit using Arduino. First, when we put finger on sensor it count heartbeats per minute and this is important because heartbeat tells doctor about our health. Here, we use Arduino UNO, LCD screen, two buttons, one resistor and heartbeat sensor to build it; […]
Interfacing a 7-Segment Display Circuit with Arduino UNO
Interfacing a 7-Segment Display Circuit with Arduino UNO is small electric part which shows numbers, also it have 7 LEDs inside and makes shapes for numbers and some letters. We can also connect it to Arduino and then it tells what number to show, as this article teaches how to connect 7-segment to Arduino UNO […]
Battery Status Indicator Circuit using Flashing LED
Battery Status Indicator Circuit using Flashing LED is an easy to make project, as the circuit uses BC547 and BC557 transistor, some resistors, capacitors, one diode and one LED. LED show battery condition by blinking light and it work with 6 to 12V battery and it is easy way to know battery health and it […]