This is a voltage booster circuit using the IRLZ44N MOSFET and ATtiny microcontroller is an efficient and practical solution for increasing voltage from a low input source. The IRLZ44N MOSFET serves as the primary switching component, capable of handling high currents with minimal loss due to its low on-resistance. The ATtiny microcontroller functions as the brains of the operation, providing precise control over the MOSFET's switching frequency and duty cycle. A potentiometer is included to adjust the output voltage by varying the duty cycle, ensuring flexibility for different applications. The inductor plays a crucial role in energy storage and transfer, smoothing out the current flow and contributing to the overall efficiency of the booster. This combination of components results in a compact and reliable voltage booster capable of delivering stable output for various electronic projects and devices.