“The project aims to create a soap bubble machine using a perforated plastic disc attached to a DC motor and a fan.
The project aims to create a soap bubble machine using a perforated plastic disc attached to a DC motor and a fan. These components are connected to an L298 driver circuit and controlled by a Raspberry Pi Pico microcontroller. This simple and enjoyable project is designed for children to learn about electronics and programming.
Soap bubbles have always fascinated children and adults alike. They bring joy and excitement, creating beautiful floating spheres that reflect light in mesmerizing colors. With this project, children can explore the science behind soap bubbles while having fun building their own machine.
The heart of the machine is the perforated plastic disc, which acts as a bubble wand. When the disc rotates, it dips into a soap solution, creating a film of soap on its surface. As the disc spins, air from the fan blows through the holes, forming bubbles that detach from the disc and float away.
To control the rotation of the disc and fan speed, we use a DC motor connected to an L298 driver circuit. The L298 driver allows us to control the direction and speed of the motor using signals from the Raspberry Pi Pico microcontroller.
We control the speed of the perforated circular bubbles disc through a potentiometer connected to an ADC pin at the Raspberry Pi Pico.
The Raspberry Pi Pico serves as the brain of our project. It runs a program that controls when to start and stop the motor, as well as adjusting its speed. By programming the Raspberry Pi Pico, children can learn about coding concepts such as loops, conditionals, and functions.”