Unit 03

Subsystems and Hardware

By the end of this unit you can write a subsystem that claims its own hardware and says what it can do, read a sensor into something a command can act on, and put every number in the one home its lifetime calls for.

Robotics Programming · members' unit

Subsystems and Hardware is behind a locked door

Units in Robotics Programming are for people taking the course. Getting in takes a link or a key — signing in on its own doesn't do it.

What's in this unit · 11 min read

  1. The part of the robot that stays
  2. One motor, one owner
  3. Name it once
  4. Where a number lives
  5. The dial that did nothing
  6. Reading a sensor
  7. A reading is not a decision
  8. State inside a subsystem
  9. When a command is one line

10 quick checkscode exercises

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With your school Google account. This is how your work reaches the gradebook — it doesn't open the unit by itself.

2 Get in

Open the class link your teacher posted — that's the usual way, and it enrolls you on the spot. Or paste an access key if you were handed one.

A key unlocks this browser and keeps your progress here; signing in keeps it with you across devices. Either way the key itself is only ever checked as a hash. Manage all of this on your account, read what signing in stores, or go back to Robotics Programming.

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