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Teaching notes, project walkthroughs, and hands-on electronics guides from Gary and the Mr Circuit team.

2 posts Updated Jun 10, 2026

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Small classroom robot using sensors to follow a path and avoid an obstacle while students observe

beginner roboticsHow Robots Use Sensors to Make Decisions

Learn how robots use sensors to detect light, distance, and contact, then make simple decisions students can see in real classroom builds.

Jun 10, 2026· 5 min read

Roadmap diagram showing circuit concepts students should learn before starting robotics including power loops sensors motors and troubleshooting

beginner electronicsCircuits Students Should Understand Before Robotics

Teach robotics with less confusion by covering the circuit ideas students need first: power, closed loops, polarity, sensors, motors, and troubleshooting.

Jun 7, 2026· 5 min read