A-TechTechnical Training

Robotic Design - Basket• Grey pieces act like

funnel

• Black rubberband keeps basket closed

Robotic Design – Manual Control

• Fast adjustment to basket vertical position

Robotic Design - Bumper

• Yellow claws are adjustable

• Goes up and down

Robotic Design – Counter Weight

• Keep robot form tilting forward

Robotic Design – Rear Wheel

• Single wheel design let robot turn easily and accurately

• Can turn forward and backward very fast

Robotic Design – Gear Box

• Use 3 circular gears to open and close basket• Gears are 1 to 1 ratio• Use linear gear to raise basket up and down• One motor can control open / close and up /

down

Robotic Design – Structure• Lots of braces to keep robot solid

Robotic Design – Sensors/Motors

• Use 2 light sensors

• 1 ultrasonice sensor

• 3 NXT Motors

Robotic Design – Light Sensor• Sense shades of colors• How does it work?• How does calibration work?• How fast is it?

35

60

0

100

Robotic Design – Utrasonic Sensor

• Sense Distance• How does it work?• What is the minimun distance?• How fast is it?

3 – 4 Inches Min.

Software Design – Detecting Distance

• Set motor to unlimited move forward

• Set sensor until < distance ( in centimeters or inches )

• How many centimeters in an inch?

2.54 cms

Software Design – Line Following Algorithm

C

B

C Motor Speed stay constant

B Motor Speed slower or faster than C motor, never same

Software Design – Reference Robot

• This makes sure our robot is starting from the same position and angle at each time

3

2