Nowadays, Arduino projects are very popular and they controls everything, as they are easy to build and they are useful for learning electronics. This project demonstrates a Bluetooth-Controlled Police Siren Sound Circuit with Arduino, then the Arduino UNO acts as the main controller, while the Bluetooth module provides wireless control. Furthermore, with Bluetooth we can […]
9V Loud Speaker Sound Generator Circuit
This article explains a 9V Loud Speaker Sound Generator Circuit that is simple, low-cost, and operates from a 9V DC power supply. In addition, the circuit gives loud sound compared to simple buzzer, therefore it is useful for alarms, door bells, alerts and projects and also, the circuit uses common transistors, so beginners can build […]
Simple Transistor Oscillator Speaker Circuit
Many people think a buzzer is necessary to produce sound, but this circuit proves otherwise by generating sound with only a few components. This Simple Transistor Oscillator Speaker Circuit does not use a buzzer, instead, the transistors drive a small speaker directly, allowing the circuit to generate sound on its own. Moreover, it is very […]
Toy Organ Circuit using Transistors
This Toy Organ Circuit using Transistors show how electronic circuits can produce music with only a few components; also the circuit uses just two transistors and a few simple parts, so it requires no IC, no coding, and no complex components. When we press different push buttons, the circuit produces different sound tones, so it […]
6V To 12V Lead Acid Battery Charger Circuit
To begin with, this article for 6V To12V Lead Acid Battery Charger Circuit explains about a dual voltage battery charger circuit. Lead acid battery needs correct voltage for proper charging, so this charger circuit gives correct charging for both batteries; here, LM317 IC is the main part of the circuit and it gives stable charging […]
Transformer Based 12V DC 3A Power Supply Circuit
Need a strong 12V DC supply for our electronics projects? then a stable and powerful DC supply is the heart of any electronics project. Also, this Transformer Based 12V DC 3A Power Supply Circuit delivers clean and reliable power and it converts AC mains into smooth DC power and it provides high current with low […]