#WEDO PROJECTS HOW TO#
#WEDO PROJECTS UPDATE#
#WEDO PROJECTS CODE#
#WEDO PROJECTS PROFESSIONAL#

Looking at the starting coordinates for the traffic on the left, the coordinates are -152,170.

A positive number will be in the top half of the screen, and a negative number at the bottom. So, an x-coordinate of a negative number will be on the left of centre, and a positive number will be on the right. Coordinate 0,0 (x,y) is in the centre of the screen. The starting coordinates, on the blue line at the top, tell the sprite where to begin. Coding for the traffic (in both directions) When the tilt sensor is more than 20 degrees to the right, the car will change to the diagonally-right costume, and move 10 pixels horizontally to the right. The third condition does the same as the second, but to the right. This moves the car 10 pixels to the left, along the horizontal.

#WEDO PROJECTS CODE#

That’s what the blue line of code is for – change x by -10. At the same time, you want the car to move sideways so it can change lanes. When the condition is met, costume 2 will show, where the car is facing diagonally left.

#WEDO PROJECTS UPDATE#

(Vertical = less than 20 degrees, Left = more than 20 degrees.) If you change the vertical range in Condition 1, make sure you update Conditions 2 and 3 to match. The degrees selected should be the same as the condition for vertical, so that there’s no overlap or gap in the code.

The second condition applies when the tilt sensor is more than 20 degrees to the left. We found that 20 degrees either side was good, but you may prefer something different. If the range is too small, you’ll find it hard to hold the steering wheel close enough to vertical, and the racing car will veer off to the side when you don’t want it to. Very important for this part of the code is to nominate a suitable range either side of vertical. Under those conditions, costume 1 will show, which is when the car is facing straight ahead. The first part of this code applies when the tilt sensor is close to vertical – less than 20 degrees either left or right. All three are inside a forever loop, so the sprite will constantly check which condition is applicable. That’s one condition for each costume, so that the sprite knows what to do. Notice that there are three ‘if’ conditions in this section of code. At the same time, we want the car to move left or right when we turn the steering wheel, so the blue lines of code tell the car to move along the horizontal axis.įinal part of the code for the racing car, using Lego Wedo tilt sensor blocks It’s controlled by the tilt angle of the sensor, either left, right, or vertical. The first is to control which costume is used for the racing car sprite. In this code, the tilt sensor is used to instruct two different actions simultaneously.

#WEDO PROJECTS HOW TO#

How to connect Lego Wedo 2.0 to Scratch.We’re using the left/right detection in the code for the racing car game. For the racing car project, the sensor is fixed vertically to the central bar of the steering wheel. The sensor can detect up/down and left/right movement, which it feeds to the smarthub. The steering wheel was the first project that required the sensor, so there was a lot of learning. Liam has been working on some other Wedo projects recently, but they’ve been using only the motor and the smarthub. The tilt sensor is one of the key components in the Lego Wedo 2.0 kit, along with a motion sensor, motor and smarthub.

Lego Wedo tilt sensor attached to the back of the steering wheel It’s taken a while, but it’s definitely worth getting the rest of the code up and running. In the final section of code, the Lego Wedo tilt sensor finally comes into the game.

Moving Along: Use the motor blocks, key pressed blocks, and move block to control the motor and move the cat by pressing the left and right arrows.Racing car code part 3 – when the car crashes Part 4 – using the tilt sensor on the steering wheel.

Costume Change: Use the tilt sensor and next costume block to scroll through a sprite's costumes.

Cat Controller: Use the tilt sensor and change x/y blocks to make the cat move around the stage.

Monster Music: Use the distance sensor, set color effect block, and the play note block to make the character change color and play music.

Small, Large: Use the distance sensor and set size block to make the cat smaller and larger.

Looking for ways to get started with WeDo? This collection of handouts explores each of the WeDo components - motor, distance sensor, tilt sensor - in a short project.

Keywords: robotics, WeDo, sensors, lego.

Curricular Areas: Computer Science, Engineering, Language Arts, Mathematics, Music, Science, Social Studies, Teacher Education, Technology, Visual Arts, Other.

Content Types: Activity, Handout, Reference Guide, Sample Scratch Project, Tool.

#WEDO PROJECTS PROFESSIONAL#

Education Level: Preschool and Kindergarten, Elementary School, Middle School, High School, College and University, Professional Development, Other.