how to make water alarm model using a plastic bottle, a 9V battery, a buzzer, safety pins
Creating a water alarm model using a plastic bottle, a 9V battery, a buzzer, safety pins, and wires is a simple and effective project to demonstrate how a basic water detection system works. Here’s a step-by-step guide: Materials Needed Step-by-Step Video Instructions 1. Prepare the Plastic Bottle 2. Prepare the Safety Pins 3. Wiring the … Read more