What is a Raspberry Pi

[Trail Mixorz]

I'm guessing this isn't a typo for a delicious pie, since everyone is talking about them. What are they? Are they like mini computers or something? I saw people saying you can run servers on them? This seems pretty cool, how expensive are they? Sorry I can't really look it up because I'm in school.

[Hawx]

>Can't look it up because at school

>Goes on linus tech tips forum instead

[Shrubpig]

It's a tiny ARM based computer that was made to teach kids in school how computers work. They're $35 and you can buy them here.

[tS_kStin]

They are little mini computers that run a flavor of Linux.

 

http://www.raspberrypi.org/

[qwertywarrior]

I'm guessing this isn't a typo for a delicious pie, since everyone is talking about them. What are they? Are they like mini computers or something? I saw people saying you can run servers on them? This seems pretty cool, how expensive are they? Sorry I can't really look it up because I'm in school.

google or bing doesnt work in school ?

[GeekySole9354]

A Raspberry Pi is a mini computer, smaller than a graphics card. It's good for like having a little PC at your TV to watch youtube, Netflix or just browsing the internet.

[xXxYOLOxSWAGxXx_420BlazeIt]

>Can't look it up because at school

>Goes on linus tech tips forum instead

Who are you quoting?

 

 

 

They are limited, cheap, low energy computers that are based on an ARM CPU and a small ammount of RAM.

[Trail Mixorz]

>Can't look it up because at school

>Goes on linus tech tips forum instead

 

google or bing doesnt work in school ?

Well it's a lot easier and quicker to just post this thread and check back later with all the information I need, ya know?

[Trail Mixorz]

It's a tiny ARM based computer that was made to teach kids in school how computers work. They're $35 and you can buy them here.

 

They are little mini computers that run a flavor of Linux.

 

http://www.raspberrypi.org/

 

A Raspberry Pi is a mini computer, smaller than a graphics card. It's good for like having a little PC at your TV to watch youtube, Netflix or just browsing the internet.

These sound pretty cool, so they have a video and audio output on them and you can load Linux or something on them?

[tS_kStin]

These sound pretty cool, so they have a video and audio output on them and you can load Linux or something on them?

Yeah, they got a 2 USB, video, audio, SD card, ethernet.

[Trail Mixorz]

Yeah, they got a 2 USB, video, audio, SD card, ethernet.

Oh nice. Would it be okay to run this wirelessly and use a keyboard and mouse with one usb through a splitter or hub? I wouldn't really want to leave this downstairs in my house by the router

[Opcode]

 

Nah but really.

 

[spwath]

Yeah what everyone said, 35$ mini PC, about the size of a wallet but about

1.5 inches thick with case on.

One more thing, powerd by standard microusb.

[Kyuubixchidori]

Yup, like everyone said. I have one and its loads of fun to mess with. I have used it as a media center, to stream movies from my computer to, but right now Im playing with electricity. took 6 hours to get a LED to light up, but was fun and intresting so! highly recommended

[Almercenary]

No, everyone's wrong, there just a raspberry pi that everyone has an obsession with plugging HDMI and power cords into...

[Zeruel]

Yup, like everyone said. I have one and its loads of fun to mess with. I have used it as a media center, to stream movies from my computer to, but right now Im playing with electricity. took 6 hours to get a LED to light up, but was fun and intresting so! highly recommended

 

May I recommend looking up Wiring Pi, its C++ but it is a great tool for applying computing to electrical wiring.

[Kyuubixchidori]

May I recommend looking up Wiring Pi, its C++ but it is a great tool for applying computing to electrical wiring.

oh. so when i open a python windows for wiringpi, that's why it doesn't work? whoops. 

 

OP, pick up a pi, breadboard, pi cobbler, and a bunch of wires and leds. I want a bigger breadboard because this is fun. I play more with my Pi then my tablets, so well worth it

[Zeruel]

oh. so when i open a python windows for wiringpi, that's why it doesn't work? whoops. 

 

OP, pick up a pi, breadboard, pi cobbler, and a bunch of wires and leds. I want a bigger breadboard because this is fun. I play more with my Pi then my tablets, so well worth it

Oh lol, yeah python is used a lot for Pi development, but Wiring Pi is meant for the C++ coding environment.

#include <conio.h>#include <unistd.h>#include <iostream>#include <stdio.h>#include <sstream>#include <string>using namespace std;int main(){	string visualPower = "";	string status = "START";	string wUnder = "MIN!";	string wOver = "MAX!";	string valveStatus1 = "START";	string valveStatus2 = "START";	string valveStatus3 = "START";	string valveStatus4 = "START";	string valveStatus5 = "START";	string valveStatus6 = "START";	string valveStatus7 = "START";	string valveOFF = "OFF";	string valveON = "ON";    	char A = 0;	int  a = 0;    	int pwrlvl = 0;    	stringstream ss;	textbackground( LIGHTBLUE );	while( A != 'q' )	{		clrscr();		cout << "--------------------------------------------------------------" << endl;		cout << "|                -----Main Motor Control-----                |" << endl;		cout << "--------------------------------------------------------------" << endl;		printf( "| Power:  %5d        |      Press - to Decrease Power      |\n", pwrlvl );		printf( "| Status: %5s        |      Press + to Increase Power      |\n", status.c_str());		cout << "--------------------------------------------------------------" << endl;		printf( "| MIN:%-50s:MAX |\n", visualPower.c_str());		cout << "--------------------------------------------------------------" << endl;		cout << "|                -----Valve Control-----                     |" << endl;		cout << "--------------------------------------------------------------" << endl;		printf( "| Valve 1: [ %5s ]   |       Press 1 to Toggle             |\n", valveStatus1.c_str());		printf( "| Valve 2: [ %5s ]   |       Press 2 to Toggle             |\n", valveStatus2.c_str());		printf( "| Valve 3: [ %5s ]   |       Press 3 to Toggle             |\n", valveStatus3.c_str());		printf( "| Valve 4: [ %5s ]   |       Press 4 to Toggle             |\n", valveStatus4.c_str());		printf( "| Valve 5: [ %5s ]   |       Press 5 to Toggle             |\n", valveStatus5.c_str());		printf( "| Valve 6: [ %5s ]   |       Press 6 to Toggle             |\n", valveStatus6.c_str());		printf( "| Valve 7: [ %5s ]   |       Press 7 to Toggle             |\n", valveStatus7.c_str());		cout << "--------------------------------------------------------------" << endl;		cout << "| Press Q to quit                                            |" << endl;  		cout << "--------------------------------------------------------------" << endl;		A = getch();		switch( A )		{			case '-':			{				pwrlvl = pwrlvl - 10;				if( pwrlvl  < 0 )				{					status = wUnder;					pwrlvl = pwrlvl + 10;				}				else if( pwrlvl >  -10)				{					ss.str("");					ss.clear();					ss << pwrlvl;					status = ss.str();					visualPower.clear();				}				for(int i = 0; i < pwrlvl/2; ++i)				{					visualPower = visualPower + "#";				}				break;			}//Case 1			case '=':			{				pwrlvl = pwrlvl + 10;				if( pwrlvl > 100 )				{					status = wOver;					pwrlvl = pwrlvl - 10;				}				else if( pwrlvl > 0)				{					ss.str("");					ss.clear();					ss << pwrlvl;					status = ss.str();					cout << pwrlvl << endl;					visualPower.clear();					for(int i = 0; i < pwrlvl/2; ++i)					{						visualPower = visualPower + "#";					}				}				break;			}//Case 2			case '1':			{				if( valveStatus1 == "START"| valveStatus1 == "OFF")				{					valveStatus1 = valveON; 				}				else if( valveStatus1 == "ON" )				{					valveStatus1 = valveOFF;				}				break;			}			case '2':			{				if( valveStatus2 == "START"| valveStatus2 == "OFF")				{					valveStatus2 = valveON; 				}				else if( valveStatus2 == "ON" )				{					valveStatus2 = valveOFF;				}				break;			}			case '3':			{				if( valveStatus3 == "START"| valveStatus3 == "OFF")				{					valveStatus3 = valveON; 				}				else if( valveStatus3 == "ON" )				{					valveStatus3 = valveOFF;				}				break;			}			case '4':			{				if( valveStatus4 == "START"| valveStatus4 == "OFF")				{					valveStatus4 = valveON; 				}				else if( valveStatus4 == "ON" )				{					valveStatus4 = valveOFF;				}				break;			}			case '5':			{				if( valveStatus5 == "START"| valveStatus5 == "OFF")				{					valveStatus5 = valveON; 				}				else if( valveStatus5 == "ON" )				{					valveStatus5 = valveOFF;				}				break;			}			case '6':			{				if( valveStatus6 == "START"| valveStatus6 == "OFF")				{					valveStatus6 = valveON; 				}				else if( valveStatus6 == "ON" )				{					valveStatus6 = valveOFF;				}				break;			}			case '7':			{				if( valveStatus7 == "START"| valveStatus7 == "OFF")				{					valveStatus7 = valveON; 				}				else if( valveStatus7 == "ON" )				{					valveStatus7 = valveOFF;				}				break;			}			case 'q':				break;		}// End Switch	}// End Whileclrscr();}//end Main

Here is some code, I had to learn C++ on the fly for a presentation so this isn't most professional code you will see but it should get things working for you. 

 

Also I used a special Conio.h header file, you will have to replace it in the /include folder with has all the header files for C++. But Ncurses is better but if you are a beginner you can worry about later or ask question in the programming sub section.

/*** conio4linux (Conio.h for linux)* Copyright (C) 2013 by Carlos J. Pinto B.** This program is free software: you can redistribute it and/or modify* it under the terms of the GNU General Public License as published by* the Free Software Foundation, either version 3 of the License, or* any later version.** This program is distributed in the hope that it will be useful,* but WITHOUT ANY WARRANTY; without even the implied warranty of* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the* GNU General Public License for more details.** You should have received a copy of the GNU General Public License* along with this program.  If not, see <http://www.gnu.org/licenses/>.*//*** @author Carlos J. Pinto B. <pintocar83@gmail.com>* @date 2013-11-05* @version 0.3*//*List funtions=============    cprintf    cscanf    gotoxy              clrscr              textcolor           textbackground      wherex             wherey            getch              getche       ungetch    kbhit              putch               putchar            cputs             clreol             insline (not implemented)           delline (not implemented)           cgets   (not implemented)           getpass (not implemented)            gettext (not implemented)    _cprintf            _cscanf             _cputs              _getche             _kbhit              _putch              _ungetch    Instalation for linux=====================    Copy file conio.h to /usr/include/    Run as root user:      cp conio.h /usr/include/Example program===============//File name: main.cpp//Compilation: gcc main.cpp -o program_conio -lstdc++//Test program: ./program_conio#include<conio.h>int main(int argc, char *argv[]){  textbackground(BLUE);  clrscr();    textcolor(WHITE);  gotoxy(30,5);  cprintf("Hello World WHITE");  textcolor(YELLOW);  gotoxy(30,6);  cprintf("Hello World YELLOW");      for(int i=0;i<16;i++){    textcolor(i);    gotoxy(1,2+i);    cprintf("Hello World");     }    getch();  return 0;  }I need help for===============  *Document funtions.  *Implement funtions not implemented.  *Add funtions new.  *Report bugs.    For any case:   Send a mail to pintocar83@gmail.com with the modifications and information: Email, Autor and changes.  Thanks!!!Contributions=============*/#ifndef __CONIO4LINUX_H#define __CONIO4LINUX_H#include <stdio.h>//necesaria#include <unistd.h>//necesario#include <fcntl.h>#include <termios.h>//necesaria#define BLACK        0#define BLUE         1#define GREEN        2#define CYAN         3#define RED          4#define MAGENTA      5#define BROWN        6#define LIGHTGRAY    7#define DARKGRAY     8#define LIGHTBLUE    9#define LIGHTGREEN   10#define LIGHTCYAN    11#define LIGHTRED     12#define LIGHTMAGENTA 13#define YELLOW       14#define WHITE        15#define BLINK        128class __CONIO_H{  private:    int bgc;  public:    __CONIO_H(){      bgc=40;      }          ~__CONIO_H(){      printf("\033[m");      }          void clreol(){      printf("\033[K");      }          void insline(){      printf( "\x1b[1L");      }      void delline(){      printf( "\033[1M");      }    void gotoxy(int x,int y){      printf("\033[%d;%df",y,x);      }          void clrscr(){      printf( "\033[%dm\033[2J\033[1;1f",bgc);      }          void textbackground(int color){      switch(color%16){	  case BLACK:          bgc=40;break;	  case BLUE:           bgc=44;break;	  case GREEN:          bgc=42;break;	  case CYAN:           bgc=46;break;	  case RED:            bgc=41;break;	  case MAGENTA:        bgc=45;break;	  case BROWN:          bgc=43;break;	  case LIGHTGRAY:      bgc=47;break;	  case DARKGRAY:       bgc=40;break;	  case LIGHTBLUE:      bgc=44;break;	  case LIGHTGREEN:     bgc=42;break;	  case LIGHTCYAN:      bgc=46;break;	  case LIGHTRED:       bgc=41;break;	  case LIGHTMAGENTA:   bgc=45;break;	  case YELLOW:         bgc=43;break;	  case WHITE:          bgc=47;break;	}      }    void textcolor(short color){        switch(color%16){	  case BLACK:          printf("\033[0;%d;%dm",30,bgc);break;	  case BLUE:           printf("\033[0;%d;%dm",34,bgc);break;	  case GREEN:          printf("\033[0;%d;%dm",32,bgc);break;	  case CYAN:           printf("\033[0;%d;%dm",36,bgc);break;	  case RED:            printf("\033[0;%d;%dm",31,bgc);break;	  case MAGENTA:        printf("\033[0;%d;%dm",35,bgc);break;	  case BROWN:          printf("\033[0;%d;%dm",33,bgc);break;	  case LIGHTGRAY:      printf("\033[0;%d;%dm",37,bgc);break;	  case DARKGRAY:       printf("\033[1;%d;%dm",30,bgc);break;	  case LIGHTBLUE:      printf("\033[1;%d;%dm",34,bgc);break;	  case LIGHTGREEN:     printf("\033[1;%d;%dm",32,bgc);break;	  case LIGHTCYAN:      printf("\033[1;%d;%dm",36,bgc);break;	  case LIGHTRED:       printf("\033[1;%d;%dm",31,bgc);break;	  case LIGHTMAGENTA:   printf("\033[1;%d;%dm",35,bgc);break;	  case YELLOW:         printf("\033[1;%d;%dm",33,bgc);break;	  case WHITE:          printf("\033[1;%d;%dm",37,bgc);break;	}      }        int ungetch(int ch){      return ungetc(ch, stdin);      }        int getch_echo(bool echo=true){      struct termios oldt, newt;      int ch;      tcgetattr( STDIN_FILENO, &oldt );      newt = oldt;      newt.c_lflag &= ~ICANON;      if(echo)	newt.c_lflag &=  ECHO;      else	newt.c_lflag &= ~ECHO;      tcsetattr( STDIN_FILENO, TCSANOW, &newt );      ch = getchar();      tcsetattr( STDIN_FILENO, TCSANOW, &oldt );      return ch;      }          int getch(){      getch_echo(false);      }          int getche(){      getch_echo(true);      }          int wherexy(int&x,int&y){      printf("\033[6n");      if(getch() != '\x1B') return 0;      if(getch() != '\x5B') return 0;      int in;      int ly = 0;      while((in = getch()) != ';')      ly = ly * 10 + in - '0';	      int lx = 0;      while((in = getch()) != 'R')      lx = lx * 10 + in - '0';      x = lx;      y = ly;      }    int wherex(){      int x=0,y=0;      wherexy(x,y);      return x;      }          int wherey(){      int x=0,y=0;      wherexy(x,y);      return y;      }     int kbhit(){      struct termios oldt, newt;      int ch;      int oldf;          tcgetattr(STDIN_FILENO, &oldt);      newt = oldt;      newt.c_lflag &= ~(ICANON | ECHO);      tcsetattr(STDIN_FILENO, TCSANOW, &newt);      oldf = fcntl(STDIN_FILENO, F_GETFL, 0);      fcntl(STDIN_FILENO, F_SETFL, oldf | O_NONBLOCK);          ch = getchar();          tcsetattr(STDIN_FILENO, TCSANOW, &oldt);      fcntl(STDIN_FILENO, F_SETFL, oldf);          if(ch != EOF){	ungetc(ch, stdin);	return 1;	}          return 0;      }        int putch(const char c){      printf("%c",c);      return (int)c;      }          int cputs(const char*str){      printf(str);      return 0;      }            char*getpass(const char*prompt){      //implementada en unistd.h      }          int gettext(int l,int t,int r,int b,void*destination){            }          }___CONIO_H;#define cprintf printf#define cscanf scanf#define cgets gets    #define gotoxy          ___CONIO_H.gotoxy#define clrscr          ___CONIO_H.clrscr#define textcolor       ___CONIO_H.textcolor#define textbackground  ___CONIO_H.textbackground#define wherex          ___CONIO_H.wherex#define wherey          ___CONIO_H.wherey#define ungetch         ___CONIO_H.ungetch  #define getch           ___CONIO_H.getch#define getche          ___CONIO_H.getche#define kbhit           ___CONIO_H.kbhit#define putch           ___CONIO_H.putch#define putchar         ___CONIO_H.putch#define cputs           ___CONIO_H.cputs#define clreol          ___CONIO_H.clreol#define insline         ___CONIO_H.insline#define delline         ___CONIO_H.delline//#define getpass         ___CONIO_H.getpass#define gettext         ___CONIO_H.gettext//DEV C++ only have the next funtions (version: 4.9.9.2)#define _cprintf        cprintf#define _cscanf         cscanf#define _cputs          cputs#define _getche         getche#define _kbhit          kbhit#define _putch          putch#define _ungetch        ungetch#endif 

[CatCloud]

Now they just need to release a 2x stronger Pi and ill buy 10 otherwise ill just dismantle my phone once i replace it.

[amintha1992]

Now they just need to release a 2x stronger Pi and ill buy 10 otherwise ill just dismantle my phone once i replace it.

there are other ARM based mini PCs out there

 

look up 

 

Odroid U3 4 times power for 2 times the price

[CatCloud]

there are other ARM based mini PCs out there

look up

Odroid U3 4 times power for 2 times the price

Yeah i know but i want a rasp Pi.

[amintha1992]

Yeah i know but i want a rasp Pi.

OK

[MuffinTopMike]

A Raspberry Pi is a credit card sized low powered Linux computer that only costs $35. It can run many OS's such as a modified version of Debian and XBMC (Xbox media centre). Great for watching HD video, programming or like I do use the GPIO pins like an Arduino and control servos and LED's.

[Austin:P]

Seems not that exciting to be honest...