Damien Kee has written a post on his website demonstrating how to use arrays in EV3 to create a memory game. An array is a way of storing a list of values (either numeric or logic in the case of the EV3) in a single data structure. See the full...
Design and develop a car that is capable of traveling across flat surfaces quickly, but can also negotiate a steep ramp. Note: The WeDo version of the car remains tethered to the computer via the USB cable and therefore cannot travel very far. Tip 1: What gear train yields...
Design and construct a LEGO fan with at least one sensor and program it to run at variable speeds and have a stop/start function. Note: the RCX and NXT versions of the attachments use two touch sensors while the WeDo version uses the tilt sensor. This lesson is...
What is the best design for cars used by people on sloping paths? Construct a car that is capable of climbing steep inclines. What is torque and why is it important? This lesson is one in a series of introductory lessons that is applicable to all types of...
These examples (PDF) demonstrate the use of various features in ROBOLAB. NXT multiple events Multiple events can be setup in the same code to track different variables. All event structures must have the same event landing. This means that if 3 events are setup and only one triggers, the code will...
What to do, what not do, and where it pays to be cautious! This posts throws light on some very important aspects of programming robots in NXT-G. Any program that we write for NXT-G should work without crashing, without lagging, and it should be light on the processor and as...
Think of a way to program a robot car to be afraid of the dark: as it moves into a tunnel, it reverses back out when it encounters a darker light reading. Resources Light at the Beginning of the Tunnel – NXT-G + ROBOLAB (PDF)
Can you design and program a robot that can travel from one state to another across a large floor map of the USA (or a similar map of another part of the world)? Can you estimate the time required to travel between specific states? Resources Cross Country Adventure lesson plan...
Design a robot that moves forward when you clap softly, and stops when you clap loudly. Resources Clap-on lesson plan – NXT+G (PDF)
Writing Efficient NXT-G Programs (PDF) describes how to make your NXT-G programs as efficient as possible to create complex behaviours with a minimum of memory. These techniques are particularly relevant for competitions such as FIRST LEGO League (FLL) and RoboCup Junior, in which competitors often download several complex programs onto...