Question 1

I just finished the playlist. Why does bitzee have bottle cap eyes that don't flash red, green and blue? And Karl didn't show the red bottle cap nose in his videos either.

Accepted Answer

The tutorial shows how to build the second Bit-zee bot that Karl made. It's a little different from the first one and it also includes some upgrades. Go to www.Khanacademyprojects.com For more info.

Question 2

how does it spin exactly?
and can it say what we talk?
please answer it please.^^

Accepted Answer

It can talk but you have to program it to.
To make it spin you have to put a wheel with a motor under the robot.
If it is a walking robot then put a small wheel just above the joints of the legs.

Question 3

Is the code available for the robot?

Accepted Answer

Copy and paste this code onto your Aduino sketchpad:

/* -*- Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 4 -*- */
/* vi: set ts=4 sw=4 expandtab: (add to ~/.vimrc: set modeline modelines=5) */
/*
UnitOne
Basic tests

Pin outs
A5-Rear bumper switch by speaker
A4-Front bumper switch by IR receiver
A1-Green LEDs
A0-Red LEDs
A2-Blue LEDs

D9-Motor L3
D3-sound play
D7-Motor L4
D2-sound rec
D5-Camera enbable
D6–Motor E1-2 /E3-4 Yellow on Manuel
D9-Open- unused green wire
D8-Motor L2
D10-Motor L1
D11-front IR sensor
D12-rear IR sensor
D4-Camera shutter
*/

#include <IRremote.h>

const int REMOTE_1_1 = 0x597B;
const int REMOTE_1_2 = 0x10CE;
const int REMOTE_2_1 = 0x797E;
const int REMOTE_2_2 = 0x20CD;
const int REMOTE_3_1 = 0x1DBF;
const int REMOTE_3_2 = 0x30CC;
const int REMOTE_4_1 = 0x40CB;
const int REMOTE_4_2 = 0x53D6;
const int REMOTE_5_1 = 0x50CA;
const int REMOTE_5_2 = 0x4EDF;
const int REMOTE_6_1 = 0xDA9A;
const int REMOTE_6_2 = 0x60C9;
const int REMOTE_7_1 = 0x70C8;
const int REMOTE_7_2 = 0x70DB;
const int REMOTE_8_1 = 0x0E7E;
const int REMOTE_8_2 = 0x80C7;
const int REMOTE_9_1 = 0x1877;
const int REMOTE_9_2 = 0x90C6;
const int REMOTE_DOT_1 = 0xAF5F;
const int REMOTE_DOT_2 = 0x7018;
const int REMOTE_0_1 = 0xDF7A;
const int REMOTE_0_2 = 0x00CF;
const int REMOTE_ENTER_1 = 0x400B;
const int REMOTE_ENTER_2 = 0xB4FE;
const int REMOTE_REW_1 = 0x79C3;
const int REMOTE_REW_2 = 0xD1E2;
const int REMOTE_PLAY_1 = 0xB57F;
const int REMOTE_PLAY_2 = 0x51EA;
const int REMOTE_FF_1 = 0x0FBA;
const int REMOTE_FF_2 = 0xC1E3;
const int REMOTE_REC_1 = 0x2EC3;
const int REMOTE_REC_2 = 0x71E8;
const int REMOTE_STOP_1 = 0x3ABF;
const int REMOTE_STOP_2 = 0xF1E0;
const int REMOTE_PAUSE_1 = 0xCB5F;
const int REMOTE_PAUSE_2 = 0x91E6;
const int REMOTE_PWR_1 = 0xB3C4;
const int REMOTE_PWR_2 = 0xA0D5;

const int PIN_BMP_R = A5;
const int PIN_BMP_F = A4;
const int PIN_LED_G = A1;
const int PIN_LED_R = A0;
const int PIN_LED_B = A2;

const int PIN_CAM_IMG = 4;
const int PIN_AUD_R = 2;
const int PIN_AUD_P = 3;
const int PIN_CAM_PWR = 5;
const int PIN_RIR_RCV = 12;
const int PIN_FIR_RCV = 11;

const int PIN_MTR_EN = 6;
const int PIN_MTR_L1 = 10;
const int PIN_MTR_L2 = 8;
const int PIN_MTR_L3 = 9;
const int PIN_MTR_L4 = 7;

const int FULL = 255;
const int SLOW = 150;

IRrecv irrecv(PIN_RIR_RCV);
decode_results results;

// the setup routine runs once when you press reset:
void setup() {
pinMode(PIN_LED_R, OUTPUT);
pinMode(PIN_LED_G, OUTPUT);
pinMode(PIN_LED_B, OUTPUT);

pinMode(PIN_BMP_R, INPUT);
pinMode(PIN_BMP_F, INPUT);

pinMode(PIN_AUD_R, OUTPUT);
pinMode(PIN_AUD_P, OUTPUT);

pinMode(PIN_CAM_PWR, OUTPUT);
pinMode(PIN_CAM_IMG, OUTPUT);

pinMode(PIN_MTR_EN, OUTPUT);
pinMode(PIN_MTR_L1, OUTPUT);
pinMode(PIN_MTR_L2, OUTPUT);
pinMode(PIN_MTR_L3, OUTPUT);
pinMode(PIN_MTR_L4, OUTPUT);

Serial.begin(115200);
irrecv.enableIRIn(); // Start the receiver
}

void loop() {
if (irrecv.decode(&results)) {
int code = results.value & 0xFFFF;
//Serial.println(code, HEX);
dispatchCommand(code);
irrecv.resume(); // Receive the next value
}
if (fwdBump()) {
playSound();
lightsFlash();
}
if (bwdBump()) {
playSound();
lightsFlash();
}
}

int lastButton = 0;

void dispatchCommand(int code) {
switch (code) {
case REMOTE_1_1:
case REMOTE_1_2:
Serial.println("1");
waddle();
break;
case REMOTE_2_1:
case REMOTE_2_2:
Serial.println("2");
wiggle();
break;
case REMOTE_3_1:
case REMOTE_3_2:
Serial.println("3");
powerSlideRight();
break;
case REMOTE_4_1:
case REMOTE_4_2:
Serial.println("4");
spinRight(3000);
break;
case REMOTE_5_1:
case REMOTE_5_2:
Serial.println("5");
spinLeft(3000);
break;
case REMOTE_6_1:
case REMOTE_6_2:
Serial.println("6");
powerSlideLeft();
break;
case REMOTE_7_1:
case REMOTE_7_2:
Serial.println("7");
rightFwd();
break;
case REMOTE_8_1:
case REMOTE_8_2:
Serial.println("8");
figureEight();
break;
case REMOTE_9_1:
case REMOTE_9_2:
Serial.println("9");
waddleBwd();
break;
case REMOTE_DOT_1:
case REMOTE_DOT_2:
Serial.println("DOT");
lastButton = REMOTE_DOT_1;
break;
case REMOTE_0_1:
case REMOTE_0_2:
Serial.println("0");
break;
case REMOTE_ENTER_1:
case REMOTE_ENTER_2:
Serial.println("ENTER");
if (lastButton == REMOTE_DOT_1) {
recordSound();
}
break;
case REMOTE_PLAY_1:
case REMOTE_PLAY_2:
Serial.println("PLAY");
playSound();
break;
case REMOTE_REW_1:
case REMOTE_REW_2:
Serial.println("REW");
//bwdSpeed(SLOW);
//bwd(0);
bwdFaster();
break;
case REMOTE_FF_1:
case REMOTE_FF_2:
Serial.println("FF");
//fwdSpeed(SLOW);
//fwd(0);
fwdFaster();
break;
case REMOTE_REC_1:
case REMOTE_REC_2:
Serial.println("REC");
recordImage();
break;
case REMOTE_STOP_1:
case REMOTE_STOP_2:
Serial.println("STOP");
stopSound();
powerStop();
break;
case REMOTE_PAUSE_1:
case REMOTE_PAUSE_2:
Serial.println("PAUSE");
rightStop();
leftStop();
break;
case REMOTE_PWR_1:
case REMOTE_PWR_2:
Serial.println("ON/OFF");
lightsFlash();
break;
default:
break;
}
}

// BEHAVIORS

void lightsFlash() {
lightsOn(100, 1, 0, 0);
lightsOn(100, 0, 1, 0);
lightsOn(100, 0, 0, 1);

lightsOn(300, 1, 0, 1);
lightsOn(300, 1, 1, 0);
lightsOn(300, 0, 1, 1);

lightsOn(100, 1, 0, 0);
lightsOn(100, 0, 1, 0);
lightsOn(100, 0, 0, 1);

lightsOn(100, 1, 0, 1);
lightsOn(100, 1, 1, 0);
lightsOn(100, 0, 1, 1);

lightsOn(300, 1, 0, 0);
lightsOn(300, 0, 1, 0);
lightsOn(300, 0, 0, 1);
}

void powerSlideLeft() {
fwdSpeed(FULL);
fwd(2000);
spinLeft(500);
bwd(300);
}

void powerSlideRight() {
fwdSpeed(FULL);
fwd(2000);
spinLeft(500);
bwd(300);
}

void figureEight() {
leftFwd();
rightFwd();
//delay(1000);
lightsOn(300, 1, 0, 0);
lightsOn(300, 0, 1, 0);
lightsOn(300, 0, 0, 1);
leftStop();
//delay(1000);
lightsOn(300, 1, 0, 0);
lightsOn(300, 0, 1, 0);
lightsOn(300, 0, 0, 1);
leftFwd();
//delay(1000);
lightsOn(300, 1, 0, 0);
lightsOn(300, 0, 1, 0);
lightsOn(300, 0, 0, 1);
rightStop();
//delay(1000);
lightsOn(300, 1, 0, 0);
lightsOn(300, 0, 1, 0);
lightsOn(300, 0, 0, 1);
rightFwd();
//delay(1000);
lightsOn(300, 1, 0, 0);
lightsOn(300, 0, 1, 0);
lightsOn(300, 0, 0, 1);
leftStop();
rightStop();
}

void wiggle() {
fwdSpeed(random(FULL-20, FULL));
bwdSpeed(random(FULL-20, FULL));
for (int i=0; i < 10; i++) {
spinLeft(random(150,220));
delay(random(150,220));
spinRight(random(150,220));
delay(random(150,220));
}
stop();
lightsFlash();
}

void waddle() {
fwdSpeed(FULL);
for (int i=0; i < 5; i++) {
waddleLeft();
//delay(1000);
lightsOn(300, 1, 0, 0);
lightsOn(300, 0, 1, 0);
lightsOn(300, 0, 0, 1);
waddleRight();
//delay(1000);
lightsOn(300, 1, 0, 0);
lightsOn(300, 0, 1, 0);
lightsOn(300, 0, 0, 1);
}
}

void waddleLeft() {
rightStop();
leftFwd();
//delay(300);
lightsOn(300, 1, 0, 0);
leftStop();
rightFwd();
//delay(300);
lightsOn(300, 0, 1, 0);
rightStop();
leftFwd();
//delay(300);
lightsOn(300, 0, 0, 1);
leftStop();
rightFwd();
//delay(300);
lightsOn(300, 0, 1, 0);
rightStop();
}

void waddleRight() {
leftStop();
rightFwd();
//delay(300);
lightsOn(300, 1, 0, 0);
rightStop();
leftFwd();
//delay(300);
lightsOn(300, 0, 1, 0);
leftStop();
rightFwd();
//delay(300);
lightsOn(300, 0, 0, 1);
rightStop();
leftFwd();
//delay(300);
lightsOn(300, 0, 1, 0);
leftStop();
}

void waddleBwd() {
fwdSpeed(FULL);
for (int i=0; i < 5; i++) {
waddleLeft();
//delay(1000);
lightsOn(300, 1, 0, 0);
lightsOn(300, 0, 1, 0);
lightsOn(300, 0, 0, 1);
waddleRight();
//delay(1000);
lightsOn(300, 1, 0, 0);
lightsOn(300, 0, 1, 0);
lightsOn(300, 0, 0, 1);
}
}

void waddleLeftBwd() {
rightStop();
leftBwd();
//delay(300);
lightsOn(300, 1, 0, 0);
leftStop();
rightBwd();
//delay(300);
lightsOn(300, 0, 1, 0);
rightStop();
leftBwd();
//delay(300);
lightsOn(300, 0, 0, 1);
leftStop();
rightBwd();
//delay(300);
lightsOn(300, 0, 1, 0);
rightStop();
}

void waddleRightBwd() {
leftStop();
rightBwd();
//delay(300);
lightsOn(300, 1, 0, 0);
rightStop();
leftBwd();
//delay(300);
lightsOn(300, 0, 1, 0);
leftStop();
rightBwd();
//delay(300);
lightsOn(300, 0, 0, 1);
rightStop();
leftBwd();
//delay(300);
lightsOn(300, 0, 1, 0);
leftStop();
}

// PRIMITIVES

int direction = 0;
int rightFwdSpeed = 128;
int leftFwdSpeed = 128;
int rightBwdSpeed = 128;
int leftBwdSpeed = 128;

void powerStop() {
if (direction > 0) {
bwdSpeed(FULL);
bwd(200);
}
else if (direction < 0) {
fwdSpeed(FULL);
fwd(200);
}
stop();
direction = 0;
fwdSpeed(SLOW);
bwdSpeed(SLOW);
}

void stop() {
leftStop();
rightStop();
direction = 0;
}

void fwd(int t) {
Serial.println("fwd()");
rightFwd();
leftFwd();
direction = 1;
if (t > 0) {
delay(t);
rightStop();
leftStop();
direction = 0;
}
}

void bwd(int t) {
Serial.println("bwd()");
rightBwd();
leftBwd();
direction = -1;
if (t > 0) {
delay(t);
rightStop();
leftStop();
direction = 0;
}
}

void spinLeft(int t) {
Serial.println("spinLeft()");
rightFwd();
leftBwd();
delay(t);
rightStop();
leftStop();
}

void spinRight(int t) {
Serial.println("spinRight()");
leftFwd();
rightBwd();
delay(t);
rightStop();
leftStop();
}

void reverseDirection() {
if (direction < 0) {
fwd(10);
}
else {
bwd(10);
}
}

const int rightFwdCalibration = 0;
const int leftFwdCalibration = 0;
const int speedIncr = 10;

void fwdFaster() {
if (rightFwdSpeed > FULL || leftFwdSpeed > FULL) {
// do nothing
}
else if (direction > 0) {
leftFwdSpeed -= speedIncr;
rightFwdSpeed += speedIncr;
fwd(0);
}
else if (direction < 0) {
if (leftBwdSpeed > SLOW) {
leftBwdSpeed += speedIncr;
rightBwdSpeed -= speedIncr;
bwd(0);
}
else {
fwdSpeed(SLOW);
fwd(0);
}
}
else {
fwdSpeed(SLOW);
fwd(0);
}
}

void bwdFaster() {
if (rightBwdSpeed > FULL || leftBwdSpeed > FULL) {
// do nothing
}
else if (direction > 0 && rightFwdSpeed > SLOW) {
if (leftBwdSpeed > SLOW) {
bwdSpeed(SLOW);
bwd(0);
}
else {
leftFwdSpeed += speedIncr;
rightFwdSpeed -= speedIncr;
fwd(0);
}
}
else if (direction < 0) {
leftBwdSpeed -= speedIncr;
rightBwdSpeed += speedIncr;
bwd(0);
}
else {
bwdSpeed(SLOW);
bwd(0);
}
}

void fwdSpeed(int n) {
Serial.println("fwdSpeed");
leftFwdSpeed = 255 - n + leftFwdCalibration;
rightFwdSpeed = n - rightFwdCalibration;
Serial.println(leftFwdSpeed);
Serial.println(rightFwdSpeed);
}

void leftFwd() {
Serial.println("leftFwd()");
Serial.println(leftFwdSpeed);
analogWrite(PIN_MTR_L1, leftFwdSpeed);
digitalWrite(PIN_MTR_L2, HIGH);
digitalWrite(PIN_MTR_EN, HIGH);
}

void rightFwd() {
Serial.println("rightFwd()");
Serial.println(rightFwdSpeed);
analogWrite(PIN_MTR_L3, rightFwdSpeed);
digitalWrite(PIN_MTR_L4, LOW);
digitalWrite(PIN_MTR_EN, HIGH);
}

const int leftBwdCalibration = 0;
const int rightBwdCalibration = -20;

void bwdSpeed(int n) {
rightBwdSpeed = n + leftBwdCalibration;
leftBwdSpeed = 255 - n - rightFwdCalibration;
}

void leftBwd() {
Serial.println("leftBwd()");
analogWrite(PIN_MTR_L1, rightBwdSpeed);
digitalWrite(PIN_MTR_L2, LOW);
digitalWrite(PIN_MTR_EN, HIGH);
}

void rightBwd() {
Serial.println("leftBwd()");
analogWrite(PIN_MTR_L3, leftBwdSpeed);
digitalWrite(PIN_MTR_L4, HIGH);
digitalWrite(PIN_MTR_EN, HIGH);
}

void leftStop() {
digitalWrite(PIN_MTR_L1, LOW);
digitalWrite(PIN_MTR_L2, LOW);
}

void rightStop() {
digitalWrite(PIN_MTR_L3, LOW);
digitalWrite(PIN_MTR_L4, LOW);
}

void lightsOn(int t, int r, int g, int b) {
if (r != 0) digitalWrite(PIN_LED_R, HIGH);
if (g != 0) digitalWrite(PIN_LED_G, HIGH);
if (b != 0) digitalWrite(PIN_LED_B, HIGH);
digitalWrite(PIN_LED_R, LOW);
digitalWrite(PIN_LED_G, LOW);
digitalWrite(PIN_LED_B, LOW);
delay(t);
}

void recordImage() {
digitalWrite(PIN_CAM_PWR, HIGH);
delay(1000);
digitalWrite(PIN_CAM_PWR, LOW);
}

void recordSound() {
digitalWrite(PIN_AUD_R, HIGH);
}

void stopSound() {
digitalWrite(PIN_AUD_R, LOW);
}

void playSound() {
digitalWrite(PIN_AUD_P, HIGH);
delay(500);
digitalWrite(PIN_AUD_P, LOW);
}

boolean bwdBump() {
int in = digitalRead(PIN_BMP_R);
if (in) {
Serial.println("bwdBump");
delay(1000);
reverseDirection();
}
return in;
}

boolean fwdBump() {
int in = digitalRead(PIN_BMP_F);
if (in) {
Serial.println("fwdBump");
delay(1000);
reverseDirection();
}
return in;
}

Question 4

How long would this take to make

Accepted Answer

not very long if you know what your doing if you dont know what your doing it could never get finished

Electrical engineering

Unit 7: Lesson 5

Bit-zeeeeeeeeeee

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Video transcript