A must have
See here
I have been playing with pxe booting for a while, first starting with pxelinux, then gpxe and lately with ipxe.
I am mostly a windows user and as an IT often needs a quick (=no install) and portable (=run from USB) dhcp server including a tftp server and a http server offering me then pxe booting.
I could use tftp32 or serva but i like to make my own tools and these 2 were missing some features here and there.
So here comes a small portable dhcp server including a tftp and a http server.
This is freeware (and will always be), should be opensource and the unique here idea is to share and contribute.
-dhcp daemon supports an alternative filename based on the user-class thus enabling chainloading (gpxe->pxelinux, ipxe->script, etc), and also support settings dhcp options (which can then be used by your boot loader)
-tftp daemon supports tsize and blksize commands.
-http daemon support head, range (mandatory for ipxe sanboot options) and over 2gb iso.
-new in version 1.0.0.7 : BINL (RIS & WDS) support
-new in version 1.0.0.10 : DNS daemon
The root home of tftp and http is the folder where you main pxe loader sits.
I put all my iso files in a sub folder called images.
I put all my wim files in a sub folder called sources.
I put all my other loaders, in case I want to chain load, in next to my main loader (bootmgr, pxelinux, gpxe, grldr, etc)
In the attached screenshot, i load ipxe then chainloads a script (menu.ipxe).
In the script 3 different methods : the classic memdisk, a newer approach with sanboot and a new kid on the block wimboot.
More info about these loading methods here :
http://www.syslinux.org/wiki/index.php/MEMDISK
http://ipxe.org/cmd/sanboot
http://ipxe.org/wimboot
Side note about ipxe+sanboot+http : I am big fan.
I have always been looking for a quick and efficient boot from lan methods and this is one is great : executes as it read and faster than memdisk since no preloading of the ISO is required.
iPXE reaches 50/60 MBits/secs on my lan.
« Voila ».
Download : http://reboot.pro/files/file/303-tiny-pxe-server/
Erwan
Why go for such an arduino when the Uno and Nano are available?
First because it is much smaller, then because it also uses much less power (due to the missing FTDI chip).
The pro mini can be found here for about 6 € : http://dx.com/p/178183 .
The usb dongle can be found here for about 2 € : http://dx.com/p/149859 .
Below the wiring. As mentionned, since the usb dongle does not have a reset feature, press reset on the arduino right between the compiling and uploading part in the Arduino Gui.
In the Arduino Gui, dont forget to select the right card i.e « arduino pro or pro mini 5v / 16 mhz / atmega328).
Voila!
Erwan
I wanted to find a way to call my kids, with me sitting on ground floor and them, sitting on the top floor of the house.
2 arduino, one acting as transmitter, one acting as receiver and here we go : they would not ignore me anymore 🙂
Lets start the transmitter (schema and code) : it has a push button to send the signal and a led to indicate it is transmitting.
#includeconst int led_pin = 11; //const int transmit_pin = 4; //const int transmit_en_pin = 3; const int transmit_pin = 3; //const int transmit_en_pin = 3; const int buttonPin=2; void setup() { pinMode(buttonPin, INPUT); // sets the digital pin as output pinMode(led_pin, OUTPUT); // sets the digital pin as output delay(1000); Serial.begin(9600); // Debugging only Serial.println("setup"); // Initialise the IO and ISR vw_set_tx_pin(transmit_pin); //vw_set_rx_pin(receive_pin); //vw_set_ptt_pin(transmit_en_pin); //vw_set_ptt_inverted(true); // Required for DR3100 vw_set_ptt_inverted(false); vw_setup(2400); // Bits per sec } byte count = 1; void loop() { int reading = digitalRead(buttonPin); if(reading==HIGH) { // digitalWrite(led_pin, HIGH); // Flash a light to show transmitting char msg[7] = {'h','e','l','l','o',' ','#'}; //msg[5]=count; vw_send((uint8_t *)msg, strlen(msg)+1); vw_wait_tx(); // Wait until the whole message is gone Serial.println(count); count = count + 1; delay(500); digitalWrite(led_pin, LOW); } }
Next comes the receiver : it has a buzzer playing a small melody and a led blinking to indicate it is receiving.
#include#include const int led_pin = 8; const int receive_pin = 3; //2 const int buzzer=11; // tableau de mémorisation des notes de la mélodie int melody[] = { NOTE_C4, NOTE_G3,NOTE_G3, NOTE_A3, NOTE_G3,0, NOTE_B3, NOTE_C4}; // tableau de mémorisation de la durée des notes : 4 = noire, 8 = croche, etc.: int noteDurations[] = {4, 8, 8, 4,4,4,4,4 }; void play(){ // boucle pour parcourir les notes de la mélodie for (int thisNote = 0; thisNote < 8; thisNote++) { // thisNote de 0 à 7 // pour calculer la durée de la note, on divise 1 seconde par le type de la note //ainsi noire = 1000 / 4 sec, croche = 1000/8 sec, etc... int noteDuration = 1000/noteDurations[thisNote]; // joue la note sur la broche x pendant la durée voulue tone(buzzer, melody[thisNote],noteDuration); // pour distinguer les notes, laisser une pause entre elles // la durée de la note + 30% fonctionne bien : int pauseBetweenNotes = noteDuration * 1.30; delay(pauseBetweenNotes); // delai entre les notes // stoppe la production de son sur la broche 8 : noTone(buzzer); } } void setup() { pinMode(led_pin, OUTPUT); // sets the digital pin as output pinMode(buzzer, OUTPUT); // sets the digital pin as output delay(1000); Serial.begin(9600); // Debugging only Serial.println("setup"); // Initialise the IO and ISR //vw_set_tx_pin(transmit_pin); vw_set_rx_pin(receive_pin); //vw_set_ptt_pin(transmit_en_pin); //vw_set_ptt_inverted(true); // Required for DR3100 vw_set_ptt_inverted(false); vw_setup(2400); // Bits per sec vw_rx_start(); // Start the receiver PLL running } void loop() { uint8_t buf[VW_MAX_MESSAGE_LEN]; uint8_t buflen = VW_MAX_MESSAGE_LEN; if (vw_get_message(buf, &buflen)) // Non-blocking { int i; // Message with a good checksum received, print it. Serial.print("Got: "); for (i = 0; i < buflen; i++) { Serial.print(buf[i], HEX); Serial.print(' '); } Serial.print(' '); for (i = 0; i < buflen; i++) { Serial.print(char(buf[i])); Serial.print(' '); } Serial.println(); digitalWrite(led_pin, HIGH);delay(1500);digitalWrite(led_pin, LOW);delay(1500); digitalWrite(led_pin, HIGH);delay(1500);digitalWrite(led_pin, LOW);delay(1500); play(); } }
Voila !
This time lets play with Arduino and a ps2 keyboard.
For the record here comes the ps2 male connectors :
A quick schema :
The sketch :
#include#define KBD_CLK_PIN 3 #define KBD_DATA_PIN 4 PS2Keyboard keyboard; void setup ( ) { keyboard.begin(KBD_DATA_PIN); Serial.begin(9600); delay(1000); } void loop ( ) { if(keyboard.available()) { // reading the "extra" bits is optional byte extra = keyboard.read_extra(); // must read extra before reading the character byte char c = keyboard.read(); boolean ctrl = extra & 1; // is bit 0 boolean alt = extra & 2; // is bit 1 if (ctrl) Serial.print('^'); if (alt) Serial.print('_'); //if (c==PS2_KC_UP) Serial.print("up\n"); //if (c==PS2_KC_DOWN) Serial.print("down\n"); //if (c==PS2_KC_BKSP) Serial.print("backspace\n"); //if (c==PS2_KC_ESC) { Serial.print("escape and reset\n"); keyboard.reset(); } Serial.print(c); //lets print last input char to our serial monitor } }
(the PS2Keyboard library : PS2Keyboard)
A picture (i used female – male proto wires so that I did not have to cut out my ps2 keyboard wire).
Last time we have seen how to use an arduino and a 16*2 lcd screen.
Now lets see to use an arduino and a tvout to a small display screen (2.5 inches) using a RCA connector.
First the wiring
Then the code
#includeTVout TV; unsigned char x, y; void setup ( ) { TV.start_render( _PAL ); } void loop ( ) { TV.clear_screen ( ); TV.print_str ( 10, 10, "Hello World!!!" ); TV.delay ( 60 ); }
TvOut lib can be found here
I got my arduino for a few days now and here comes my first adventure :
use an arduino + a lcd + a RTC to display a clock.
First lets go with the wiring :
Then the code :
// ds1302 library can be found here : http://www.henningkarlsen.com/electronics // // DS1302: RST / CE pin - Arduino Digital 12 // I/O / DAT pin - Arduino Digital 11 // SCLK pin - Arduino Digital 10 // LCD: DB7 - Arduino Digital 7 // DB6 - Arduino Digital 6 // DB5 - Arduino Digital 5 // DB4 - Arduino Digital 4 // RS - Arduino Digital 8 // E - Arduino Digital 9 // RW to ground? //seems it is better to NOT plug VCC when setting the clock... #include#include // Init the DS1302 //DS1302(ce, data, clock); DS1302 rtc(12,11,10); // Init the LCD LiquidCrystal lcd( 8, 9, 4, 5, 6, 7 ); void set_time() { rtc.setDOW(SUNDAY); // Set Day-of-Week to FRIDAY rtc.setTime(19, 2, 0); // Set the time to 12:00:00 (24hr format) rtc.setDate(13, 1, 2013); // Set the date to August 6th, 2010 } void setup() { Serial.begin(9600); // Set the clock to run-mode, and disable the write protection rtc.halt(false); rtc.writeProtect(false); // Setup LCD to 16x2 characters lcd.begin(16, 2); // The following lines can be commented out to use the values already stored in the DS1302 //set_time(); } void loop() { // Display time centered on the upper line lcd.setCursor(4, 0); lcd.print(rtc.getTimeStr()); // Display abbreviated Day-of-Week in the lower left corner lcd.setCursor(0, 1); lcd.print(rtc.getDOWStr(FORMAT_SHORT)); // Display date in the lower right corner lcd.setCursor(6, 1); lcd.print(rtc.getDateStr()); Serial.print(rtc.getTimeStr()); Serial.print(" "); Serial.print(rtc.getDOWStr(FORMAT_SHORT)); Serial.print(" "); Serial.println(rtc.getDateStr()); // Wait one second before repeating :) delay (1000); }
And finally a nice picture to illustrate it :
Hope you’ll enjoy it as much as I did 🙂
/Erwan
Did some screenshots during installation of these 2 MS products and initiated a discussion here
Native VHD boot is supported.
These are nice alternative for old hardware and/or to setup a quick rdp/web/setop box computer.
Another useful tool to install any windows (from xp to w2kr8) from WinPE (or any win32 environement).
One can also install win7 and up to a usb drive or vhd drive.