• # Now that the EV3 is out, there are likely to be some used NXTs available for sale.

## LEGO Building Directions:

• Specifically for the EDUCATIONAL KIT:
• # Official Building instructions for the LEGO Education Base Set

• Specifically for the COMMERCIAL KIT

• # The original LEGO manual withTribot Building Instructions - fromLEGO

• Good for either:

# Week 3 Specific Resources:

Figuring out turns and distances:

• When you tell the robot to turn 90 degrees, that means turn the orange part of the motor 90 degrees, not the robot itself. So how do you figure out how to turn the robot by 90 degrees? Or how to move the robot 20 cm forward?
• Great resources that help you figure this out mathematically based on wheel diameter etc:
• Alternatively, you can just use trial and error. If you decide to go this route, you can come up with a moderately reasonable equation for any angle (or distance) by figuring out the answer for a much larger angle (or distance) first. e.g.:
• Figure out how many degrees of rotation of the motor it takes to make the robot do 10 full rotations. Divide by 3600 to figure out approximately how many degrees of rotation of the motor it takes to rotate the robot by one degree
• Figure out how many degrees of rotation of the motor it takes to make the robot move 5 meters. Divide by 500 to figure out approximately how many degrees of rotation of the motor it takes to move one cm.

# Week 4 Specific Resources:

No additional resources for week 4!