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| - | ====== Mindstorms Kit ====== | ||
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| - | ===== Kit infromation ===== | ||
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| - | * Min. age: 7 yo. | ||
| - | * Measurments: 380x380x110 mm. | ||
| - | * Weight: 2,3 kg. | ||
| - | * Power source: 6 AA batteries. | ||
| - | |||
| - | |||
| - | ===== Kit's elements ===== | ||
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| - | |||
| - | * [[#nxt brick|'Brick']] - NXT 'Brick' with 32-bit processor, | ||
| - | * 3 [[#servomotors|servomotors]] with embedded rotation sensor, | ||
| - | * [[#sound sensor|sound sensor]], | ||
| - | * [[#ultrasonic sensor|ultrasonic sensor]], | ||
| - | * [[#touch sensor|touch sensor]], | ||
| - | * [[#light sensor|light sensor]], | ||
| - | * 577 LEGO TECHNICS blocks, | ||
| - | * [[mindstorms:programming|programming environment]], | ||
| - | * manuals, | ||
| - | * [[#testpad|testpad]], | ||
| - | * cables. | ||
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| - | |||
| - | |||
| - | ===== Elements' description ===== | ||
| - | ==== NXT Brick ==== | ||
| - | |||
| - | NXT Brick is the hearth of Mindstorms robot. | ||
| - | Because of it, the communication with robot, programming and controlling is possible. | ||
| - | |||
| - | === NXT Brick elements === | ||
| - | * 32-bit ARM7 Mikrocontroler, | ||
| - | * 256 Kb FLASH, 64 Kb RAM, | ||
| - | * 8-bit AVR Microcontroller, | ||
| - | * 4 Kb FLASH, 512 B RAM, | ||
| - | * Servomotors' ports: A, B, C, | ||
| - | * Sensors' ports: 1, 2, 3, 4, | ||
| - | * USB port (12 Mbit/s), | ||
| - | * 8 kHz speaker, 8-bit channel, sample rate 2-16 KHz, | ||
| - | * Buttons (menu service), | ||
| - | * LCD display, 100 x 64 px, | ||
| - | * Bluetooth wireless communication (Bluetooth Class II V2.0 compliant), | ||
| - | * 6 AA batteries. | ||
| - | |||
| - | == Links == | ||
| - | * http://mindstorms.lego.com/Overview/The_NXT.aspx | ||
| - | |||
| - | === Communication with Brick === | ||
| - | |||
| - | Communication with Brick is possible with: | ||
| - | |||
| - | * USB, | ||
| - | * Bluetooth. | ||
| - | |||
| - | With both methods it is possible to: | ||
| - | * load Brick programs, | ||
| - | * download data (eg. data collected by robot) from Brick. | ||
| - | |||
| - | == Links == | ||
| - | * [[http://www.extremenxt.com/vbfront.htm|NXT Bluetooth]] | ||
| - | |||
| - | ==== Servomotors ==== | ||
| - | |||
| - | In each kit there are 3 servomotors: | ||
| - | * useful to control revs, | ||
| - | * with revenue sensors, useful to precise tracking of propeller shaft position. | ||
| - | |||
| - | == Links == | ||
| - | * [[http://mindstorms.lego.com/Overview/Interactive_Servo_Motors.aspx|NXT Servomotors]] | ||
| - | * [[http://www.philohome.com/nxtmotor/nxtmotor.htm|detailed construction and characteristic of servomotor]] | ||
| - | |||
| - | ==== Sensors ==== | ||
| - | |||
| - | === Sound sensor === | ||
| - | Sound sensor is a microphone with possibility of sound intensity measurement, which: | ||
| - | * returns sound intensity in [dB] and in [dBA], | ||
| - | * has a range of up to 90 dB, | ||
| - | * determines percentage scale of sound intensity. | ||
| - | |||
| - | == Links == | ||
| - | * http://mindstorms.lego.com/Overview/Sound_Sensor.aspx | ||
| - | |||
| - | === Ultrasonic sensor === | ||
| - | Ultrasonic sensor can be used: | ||
| - | * to measure distance from barrier (cm and inches), | ||
| - | * to detect objects, | ||
| - | * to detect movement. | ||
| - | |||
| - | Range: 0-255 cm. | ||
| - | Precision +/- 3 cm. | ||
| - | |||
| - | How it works? \\ | ||
| - | Distance is calculated on the basis of time of sound wave return to robot after barrier bounce. (The same rule is used by bats and sonars.) | ||
| - | |||
| - | Notices: | ||
| - | * If there are more then 1 ultrasonic sensor in the same room, there can exist some interferences and the sensor can work incorrect. | ||
| - | * Curved surfaces (eg. spheres) are difficult to detect. | ||
| - | |||
| - | == Links == | ||
| - | * http://mindstorms.lego.com/Overview/Ultrasonic_Sensor.aspx | ||
| - | |||
| - | === Touch sensor === | ||
| - | |||
| - | Touch sensor detects touches with the orange button, which can differentiate 3 states of touch: | ||
| - | * pressed, | ||
| - | * bumped, | ||
| - | * released. | ||
| - | |||
| - | In addition 3 buttons on NXT Brick (left, right, center) can be set as touch detectors. | ||
| - | |||
| - | == Links == | ||
| - | * http://mindstorms.lego.com/Overview/Touch_Sensor.aspx | ||
| - | |||
| - | |||
| - | === Light sensor === | ||
| - | Light sensor: | ||
| - | * is useful to differentiate lightness and darkness, | ||
| - | * returns the light intensity, | ||
| - | * measures the light intensity reflected from colorful surfaces (indirect color detection). | ||
| - | |||
| - | == Links == | ||
| - | * http://mindstorms.lego.com/Overview/Light_Sensor.aspx | ||
| - | |||
| - | |||
| - | ==== Testpad ==== | ||
| - | |||
| - | * Dimensions: 90 cm x 60 cm. | ||
| - | * Used for testing robots. | ||
| - | * Content: | ||
| - | * colorful fields to calibrate color sensor, | ||
| - | * area limited by black line to test robots moving inside, | ||
| - | * ruler to check indications of distance sensors, | ||
| - | * field to analyze robot's rotation. | ||
| - | |||
| - | ==== Combining components ==== | ||
| - | |||
| - | Motors used for movement should be connected to B and C ports. Motor used for an extra function – to A port. | ||
| - | Standard input port connections (can be different): | ||
| - | * Port 1: touch sensor. | ||
| - | * Port 2: sound sensor. | ||
| - | * Port 3: light sensor. | ||
| - | * Port 4: ultrasonic sensor. | ||
| - | |||
| - | ===== More about kit ===== | ||
| - | |||
| - | * [[http://mindstorms.lego.com/Overview/The_NXT.aspx|LEGO NXT Overview]] | ||
| - | * [[http://en.wikipedia.org/wiki/Lego_Mindstorms_NXT|NXT at Wikipedia]] | ||
| - | * [[http://www.philohome.com/nxt.htm]] | ||
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