Unit 3: Java Variables

Use the Java data types that appear throughout FTC code, including hardware names, sensor readings, control values, and counters.

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Resume 3.1 · String LiteralsOpen Dashboard

Lesson Roadmap

3.13.1 · String LiteralsLesson 3.1: Using Strings to Match Hardware Names ExactlyOpen3.23.2 · double PrecisionLesson 3.2: Using double for Motor Power and Precise MathOpen3.33.3 · boolean FlagsLesson 3.3: Using boolean Values for On-or-Off Robot StateOpen3.43.4 · int DatatypesLesson 3.4: Using int Values to Count Cycles and RepetitionsOpen3.53.5 · Dynamic PowerLesson 3.5: Build Dynamic Power Logic with Multiple VariablesOpenCCUnit 3 · Coding ChallengeUnit 3 Comprehensive Coding Challenge: Robot State VariablesOpen

What This Unit Covers

Choose the correct datatype for names, numeric precision, binary state, and whole-number counts.

Avoid common FTC bugs caused by integer truncation or mismatched hardware identifiers.

Use variables as a single source of truth instead of scattering magic values through code.

Review the sequence and goals here, then resume at your first incomplete lesson.

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