3 Smart Laser Alarm Protection Circuits Circuit Diagram As soon as you connect the battery the L.E.D and buzzer will come "ON" (if you're in a dark room). Focus the Laser diode/light on the LDR and you will see the L.E.D and Buzzer going "OFF" If you interrupt the laser light focusing on the LDR the circuit will trigger and the alarm will ring! Congrats! Your "Laser Security Alarm System" is now ready! When the laser pen shines on the photoresistor, the green LED will light up to signify that the circuit is ready. When the laser beam is broken, the LED turns off and the buzzer sounds. As we know from Projects 13 ("Weather Station") and 18 ("Intruder Sensor"), photoresistors produce variable resistance depending on the amount of light Because, in this tutorial, we are going to make a "Laser Security Alarm Circuit". Along with the laser, the circuit uses the LDR as its key component. The electrical characteristic of the LDR is where the light increases, and its resistance decreases. Because of the higher resistance, the circuit does not operate until the light falls on
Learn how to make a laser security alarm circuit to protect your home or valuables from theft. This step-by-step tutorial will guide you through the process Take a permanent marker and make a rough layout or path draw on your PCB as shown in figure 1. Fig. 1: Layout or path draw of the PCB Fig.2: Laser Light Circuit Fig. 3: Schematic Circuit diagram of the laser light security alarm system Step 2. Clean the PCB with the help of a scrubber and after taking a small size container and some PCB etching solution (Ferrous Chloride), prepare a solution The LASER-Based Security Alarm is a safety purpose circuit that gives a warning or signal alert when an intruder or invaders try to invade a home, museum, office, bank, or any other place. So, in this article, we are going to make the LASER Security Alarm Circuit. One of the key components is LDR. So, before making the circuit, you just need to
Simple Laser Security Alarm Using LDR Circuit Diagram
A laser-based security system is a type of security alarm that uses a light sensor and laser light. In this tutorial, we are going to demonstrate a circuit of a laser security alarm system that will detect any irregular activity and will produce sound using a buzzer. One of the main components of this circuit is LDR. If your alarm circuit is powered by 4.5 volts (three AA batteries), then it is possible to power the laser pointer from this battery pack as well. All you have to do is connect the terminals of the laser pointer to the batteries of the alarm circuit. One terminal of the laser pointer is a spring that sticks out of the internal circuit board.
