Build-It-Yourself develops content and supporting platforms that inspire and guide kids to use technology creatively. Scratch Robotics Construction System

Build-It-Yourself develops content and supporting platforms that inspire and guide kids to use technology creatively.

Scratch Robotics Construction System

www.build-it-yourself.com


The problem:1. Many construction kits are expensive.2. Some construction kits are taken off the market.3. Some construction kits are very complex.

The mission:To design a robotic construction system that:1. Is under $302. Uses common parts3. Is easy to use



LEGO™ and other robotics systems use expensive microprocessors to relay information to and from the computer.

We use homemade mechanical mechanisms to control the keyboard and the mouse.

To control the motors from Scratch, we use parts from Radio Shack that cost under $25 to detect brightness on a Scratch screen.


Strategy

= $279.99



Solution Components

Mechanical sensors control keyboard and

mouse.

Light sensitive switch circuit

controls voltage to motor based on Scratch screen

light.

Scratch program controls screen light based on mechanical

sensor, time and sound.

Catapults, fly wheels, rotation

mechanisms

MotorController

MotionModules

ScratchSprites

Sensors



Solution Components

MotorController

MotionModules

ScratchSprites

Sensors



Solution Components MotorController

MotionModules

ScratchSprites

Sensors



Solution Components MotorController

MotionModules

ScratchSprites

Sensors



+6V to 9V

S

DG

5V to 9V DC Motor1A

R1Photo resistor

2K Ohms light (on)50K Ohms dark (off)

R210K

Solution Components

Photo Resistor:When the light sensor sees black, the motor is OFF.When the light sensor sees white, the motor is ON

MotorController

MotionModules

ScratchSprites

Sensors

Radio ShackBreadboardMOSFETOn/Off ControllerBuild-It-Yourself

Radio Shack Parts$ 8.00 - Breadboard$ 2.00 - MOSFET$ 3.00 - Photo Resistors$ 3.00 - Hookup Wire$ 1.50 - 10K Potentiometer$ 3.00 - 9V connector$ 2.50 - 9V battery--------------------------$23.00 - Total

MotorController

CircuitBoard

Tools Radio Shack Tools$ 9.00 – Test Jumpers$ 3.00 – Screw driver$ 7.00 – Wire Strippers$ 20.00 – Multimeter--------------------------$39.00 - Total


MotorController

MotionModules

ScratchSprites

Sensors



MotorController

MotionModules

ScratchSprites

Sensors

Playful, engaging, computer controlled, multi-media rich.

Integration of the virtual and real worlds.

Projects


Cuckoo Clocks Door Greeters Rock’n Robot Bands Puppet Theater Money Making Machines Trivia Games Remote control robots

models Rich sound effects and

recordings Two way communication

Playful, engaging, computer controlled, multi-media rich.

Integration of the virtual and real worlds.

Functionality


Remote control Rich sound effects and

recordings Two way communication 3 channel motor / lamp

control Sense light, position Fit in 1’ cube.

BIY Construction System Control Modules:=================================

Wish List Notes

3 state motor controller based on self calibrating light detection.Same torque as LEGO RCX motors.

Walkie Talkie

Control output devices with IR, sound or RF controller.What if we piggy backed on a walkie talkie that has FCC approval and decode beeps to control signals?

Color led driverControlled by resistive sensor.

Recordable sound device:Triggered by touch sensor or light sensorMay not need this if Scratch is ported to a cell phone.

All modules must:-cost less than $20 in qty 1,000 - mount easily on a project board. (3"x8"x1/4" bass wood)- connect via hookup wire and screw terminals. (No pre-made cables.)- driven by 9V battery or USB power or AC/DC converter.- incorporate protection against power to any terminal.- be no larger than size of 9V battery. (Same profile as Cricket)

Consider one basic board with power, protection, terminals, status sounds and LED's, etc. that can accommodate various sensor and output driver modules!

What if we developed a basic chassis or mechanical bread board where 3 motor/servos could be mounted? (along with receiver, and batteries) The servos could be controlled by a Futaba 3 channel transmitter. Could we ‘hack’ a Futaba transmitter interface to a walkie talkie or Adrino or Scratch motor controller switches?

Light sensitive switch circuit

controls voltage to motor based on Scratch screen

light.

MotorController

Catapults, fly wheels, rotation

mechanisms

MotionModules

Scratch program controls screen light based on

mechanical sensor state, time and

sound.

ScratchSprites

Mechanical sensors control keyboard and

mouse.

Sensors

Documents

Build-It-Yourself develops content and supporting platforms that inspire and guide kids to use technology creatively. Scratch Robotics Construction System