Ideal for classroom teaching, maker spaces, and labs, the bit Expansion Board enables innovative projects such as home systems. Per pin power and flexible wiring: Each pin header includes VCC and GND, allowing easy switching between 3.3V and 5V. The board provides three independently accessible 3.3V/5V pins for versatile wiring options. Targeted for learning and creation: Designed for students, educators, makers, and programming enthusiasts to develop handson skills and coding abilities. I2C compatible with onboard passive buzzer: The board supports I2C communication and includes an onboard passive buzzer, enabling connections to LCD displays and other peripherals as part of your electronics toolkit. Practical use scenarios Classroom demonstration: Use with a microcontroller to teach I2C operation, voltage level selection, and display interfacing with an LCD. Maker project or home system prototype: Power sensors and modules from mixed voltage sources (3.3V/5V) and use the buzzer for audio signals or alerts. Educational handson labs: Students explore wiring, voltage rails, and peripheral connections in a compact, reusable expansion board. Key attributes at a glance: function in voltage selection and shared power lines, compatibility with I2C peripherals, onboard buzzer for signaling, and a design suited for educational, hobbyist, and prototyping work.