Videos

Arduino UNO R3 vs R4 Current Limit (Lesson #34)

https://www.youtube.com/watch?v=YFpOUGjUUXk

Comparison of the I/O pin current limits on the Uno R3 and Uno R4 and what this means for LED current-limiting resistors on both boards.

See our complete playlist of Arduino tutorials here: https://youtube.com/playlist

Visit the Science Buddies website for cool science projects you can do with an Arduino: https://www.sciencebuddies.org/search

Science Buddies also hosts a library of instructions for over 1,500 other hands-on science projects, lesson plans, and fun activities for K-12 parents, students, and teachers! Visit us at https://www.sciencebuddies.org/ to learn more.

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Electricity & Electronics

Area of Science

Stop for a minute and try to imagine your world without electrical power and electronic gadgets. No convenient appliances in the kitchen, no electric lights. No computers, MP3 players, television, or video games. Your life would be completely different, wouldn't it? Electricity and electronics are so central to modern life that, paradoxically, they're easy to overlook. … Read more

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