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Indicator Circuits

Simple Over-Temperature Warning Indicator Circuit

Last updated on 7 February 2026 by Admin-Lavi Leave a Comment

This circuit is for Simple Over-Temperature Warning Indicator Circuit using an LED. It is very simple and is with low cost as it uses few easily available components. The circuit turns ON an LED when temperature rises above a set level like 45°C – 55°C. Therefore, it is useful for basic thermal warning. This circuit […]

Filed Under: Heater and Temperature Controllers, Indicator Circuits

Transistor Based Water Level Alarm Circuit

Last updated on 17 January 2026 by Admin-Lavi Leave a Comment

Sometimes water tank gets full which is a common problem But we forget to switch OFF the motor, because of this water gets wasted. So, this simple Transistor Based Water Level Alarm Circuit is useful. It gives sound alert when water reaches a level. Moreover, the circuit is cheap and easy to build as it […]

Filed Under: Alarm Circuits, Indicator Circuits, Transistor Circuits, Water Level Controller

Transistor Based Coin Toss Game Circuit

Last updated on 9 January 2026 by Admin-Lavi Leave a Comment

Sometimes we need to make a quick decision but choosing is not easy, so we flip a coin. Now imagine doing the same with electronics. This Transistor Based Coin Toss Game Circuit works like a real coin toss and it gives random result every time. When power is applied, no one knows the result. One […]

Filed Under: Indicator Circuits, Transistor Circuits

Digital Dice Circuit using Arduino Uno

Last updated on 4 November 2025 by Admin-Lavi Leave a Comment

Want to roll dice without touching it? Make Digital Dice using Arduino Uno and with a LCD screen. Press the button to get random number 1 to 6. It works like real dice but uses electronics. This is a simple and easy circuit. Its a fun project for beginners. Arduino Coding: Circuit Working: Parts List: […]

Filed Under: Arduino Projects, Indicator Circuits

Arduino Based Smart Traffic Light Circuit for Beginners

Last updated on 28 October 2025 by Admin-Lavi Leave a Comment

Traffic light is one of the best beginner Arduino projects. It shows how to control LEDs using Arduino. This project works like a real traffic signal like red for stop, yellow for wait and green for go. Arduino Based Smart Traffic Light Circuit for Beginners is easy to build and fun to learn. Coding: Coding […]

Filed Under: Arduino Projects, Indicator Circuits, LED and Lamps

Simple Battery Level Indicator Circuit

Last updated on 14 October 2025 by Admin-Lavi Leave a Comment

No More Dead Battery! Battery gone down? having no idea? This Simple Battery Level Indicator Circuit can show battery level. Easy to make, cheap and works fast. Know when battery is full or low. Good for beginners and DIY lovers. Circuit Working: Parts List: Component Value / Type Quantity Resistors 2.2k 1/4 watt 1 680Ω […]

Filed Under: Battery Charger Circuits, Indicator Circuits

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