For Grades 2- 10: The Arduino Uno is a popular microcontroller board based on the ATmega328P microcontroller. It is commonly used for prototyping and creating electronic projects, particularly in the field of embedded systems and robotics. You MUST register for the class on our library calendar, and you MUST join Baxter County 4-H to participate. Go to https://4h.uada.edu/join/ to join.