I had to add a filter to the touch logic because I was getting spurious X/Y coordinates. I suspect the polling of the IRQ is not correct. See source .zip file below. I did not verify the behavior of the flash yet.
online tutorial

Arduino ide sketch with libraries: ITDBTouch_pde.zip

Image	Part Id	Description	Where	Price	DataSheet
	Touch LCD display Mega Shield	Used to connect arduino mega to 3.2 inch touch screen, also has real-time clock	iteadstudio part	$9
	Touch LCD display	3.2 inch wide screen, also has sd flash breakout	iteadstudio part	$30
	Arduino Mega	16 mhz 54 digital i/o pins, 16 analog pins	iteadstudio part	$40

• .sch: 7Segment12Pin.sch
• .brd: 7Segment12Pin.brd
• job file: sfe-gerb274x.cam

Image	Part Id	Description	Where	Price	DataSheet
	7 segment LED Display 12	4 digits, 12 pins, does not have colon for clock	ebay supplier	$1.99	datasheet
	220 ohm resistor	1/4 watt through hole	mouser part	$0.03 (in packs of 100)	datasheet
	Female Header	Through hole solder	ebay supplier	$0.02 per individual header(in packs of 200)
	10K ohm resistor	1/4 watt through-hole resistor	mouser part	$0.03 (in packs of 100	datasheet
	clock	16 megahertz	mouser part	$0.24	datasheet
	Atmega168	Microcontroller speed:16 megahertz Ram:16K	mouser part	$2.77 (in packs of 10)	datasheet

• .sch: 7Segment16Pin.sch
• .brd: 7Segment16Pin.brd
• job file: sfe-gerb274x.cam

Image	Part Id	Description	Where	Price	DataSheet
	220 ohm resistor	1/4 watt through hole	mouser part	$0.03 (in packs of 100)	datasheet
	Female Header	Through hole solder	ebay supplier	$0.02 per individual header(in packs of 200)
	10K ohm resistor	1/4 watt through-hole resistor	mouser part	$0.03 (in packs of 100	datasheet
	clock	16 megahertz	mouser part	$0.24	datasheet
	Atmega168	Microcontroller speed:16 megahertz Ram:16K	mouser part	$2.77 (in packs of 10)	datasheet
	7 segment LED Display 16	4 digits, 16 pins, has colon for clock	http://www.sparkfun.com	$1.95	datasheet

Also see HCSR04 project.
online tutorial

Image	Part Id	Description	Where	Price	DataSheet
	Ultrasonic Transducer	Used for distance measuring	http://stores.ebay.com/one2freeland2011	$5.40
	2.4 Megahertz Transceiver	More than 100 channels	iteadstudio part	$4	datasheet

• .sch: protoShield.sch
• .brd: protoShield.brd
• job file: sfe-gerb274x.cam

Image	Description
	The Arduino

Image	Part Id	Description	Where	Price	DataSheet
	Custom pcb creation	5cm x 5cm maximum dimensions, send a .zip file, you receive a batch of 10	iteadstudio part	$10 + $4 shipping

#include <NewSoftSerial.h>
#include <SoftEasyTransfer.h>

//create Serial Port
NewSoftSerial mySerial(2,3);
//create object
SoftEasyTransfer ET; 

struct RECEIVE_DATA_STRUCTURE{
  //put your variable definitions here for the data you want to receive
  //THIS MUST BE EXACTLY THE SAME ON THE OTHER ARDUINO
  byte temp;
};

//give a name to the group of data
RECEIVE_DATA_STRUCTURE mydata;

void setup(){
  mySerial.begin(9600);
  Serial.begin(9600);
  Serial.println ( "Receiver waiting for data on port 2" );
  //start the library, pass in the data details and the name of the serial port.
  ET.begin(details(mydata), &mySerial);  
}

void loop(){
  //check and see if a data packet has come in. 
  if(ET.receiveData()){
    Serial.println ( (int) mydata.temp);
  }
  //you should make this delay shorter then your transmit delay or else messages could be lost
  delay(10);
}

• Internal pull-up resistors

    pinMode     (i, INPUT); // Define the digital i/o as an input 
    digitalWrite(i, HIGH);  // Turn on internal pull-up resistors 
  

• Writing to Eeprom
  

   #include <EEPROM.h>
   // the current address in the EEPROM (i.e. which byte
   // we're going to write to next)
   int addr = 0;
   // write the value to the appropriate byte of the EEPROM.
   // these values will remain there when the board is
   // turned off.
   byte val = 10;
   EEPROM.write(addr, val);
   // Read it back
   val = EEPROM.read(addr); 
  

• PWM output

   // An arduino has 6 pwm outputs:
   #define PWM1 3
   #define PWM2 5
   #define PWM3 6
   #define PWM4 9
   #define PWM5 10
   #define PWM6 11
   pinMode (PWM1,OUTPUT);
   // To write as a PWM, use analogWrite
   analogWrite (PWM1,   0);    // Zero output
   analogWrite (PWM1, 127);   // Half duty cycle
   analogWrite (PWM1, 255);  // Full duty cycle
  

  Note:If you affect the timers, pwm output rate will also be affected

• Reading from program memory

   #include <avr/pgmspace.h>
   // Create an array in program memory
   #define HUANPULSES 8
   PROGMEM prog_uint16_t huanQiPulses[] = {12500, 600, 2150, 600, 700, 1950, 600, 8500};
   // Read the array in a loop
   unsigned int myDelay;
   for (int j = 0; j < HUANPULSES; j  ) 
   {
     myDelay = pgm_read_word_near( huanQiPulses   j);
     sendRaw1 (myDelay, j);
   }
  

• Get amount of RAM remaining AvailableMemory library

• unzip ComPort.zip
• copy CommPort.ocx to windows/server32 for xp and windows/SysWOW64 for Win7
• run command.com (as administrator for win7), navigate to directory where .ocx resides
• execute the dos command regsvr32 CommPort.ocx to register the ActiveX component
• copy serial.pde to Arduino directory and upload it to the arduino
• run demo.htm from internet explorer (enable activex controls)
• Set com port, baud rate, and click on a discrete to turn it on or read an analog input
• You can add other commands/responses as you see fit

• .sch: ShieldWeeny.sch
• .brd: ShieldWeeny.brd
• job file: sfe-gerb274x.cam

Image	Part Id	Description	Where	Price	DataSheet
	Usb to Serial Converter	Different pinout than FTDI but has all functionality of an FTDI	http://stores.ebay.com/VirtualVillage-France-Delta?_trksid=p4340.l2563	$3.99
	Female Header	Through hole solder	ebay supplier	$0.02 per individual header(in packs of 200)
	10K ohm resistor	1/4 watt through-hole resistor	mouser part	$0.03 (in packs of 100	datasheet
	ATMEGA328	Microcontroller speed:16 megahertz RAM:32K	mouser part	$2.73	datasheet
	clock	16 megahertz	mouser part	$0.24	datasheet
	Atmega168	Microcontroller speed:16 megahertz Ram:16K	mouser part	$2.77 (in packs of 10)	datasheet
	Atmega socket	28pin	Mouser Part	$.32

• .sch: atmegaDuo.sch
• .brd: atmegaDuo.brd
• job file: sfe-gerb274x.cam

Image	Part Id	Description	Where	Price	DataSheet
	Atmega socket	28pin	Mouser Part	$.32
	Custom pcb creation	5cm x 5cm maximum dimensions, send a .zip file, you receive a batch of 10	iteadstudio part	$10 + $4 shipping
	Usb to Serial Converter	Different pinout than FTDI but has all functionality of an FTDI	http://stores.ebay.com/VirtualVillage-France-Delta?_trksid=p4340.l2563	$3.99
	2.4 Megahertz Transceiver	More than 100 channels	iteadstudio part	$4	datasheet
	clock	16 megahertz	mouser part	$0.24	datasheet
	Atmega168	Microcontroller speed:16 megahertz Ram:16K	mouser part	$2.77 (in packs of 10)	datasheet

Tutorial installed when arduino installed.

Command to upload 168 is:
avrdude -c usbtiny -B 1 -patmega168 -U flash:w:ATmegaBOOT_168_ng.hex
Bootloader .hex files come from Arduino directory:
C:Arduino/hardware/arduino/bootloaders
For example 168 bootloader is:
C:ArduinohardwarearduinoootloadersatmegaATmegaBOOT_168_ng.hex
atmega8 bootloader is: ATmegaBOOT.hex
328 bootloader is: ATmegaBOOT_168_atmega328.hex

First select the type of board you would like to flash using the tools, board selection. Then burn the bootloader:

Below is a parts list that goes with the pcb that allows you to make your own. Additionally you will need 2: 1K resistors and a green led and a red led.
I tested this on an Arduino UNO and it worked ok provided that you use the arduino 22 IDE(11/9/2011).

NOTE: This sketch does not seem to work on the Arduino Uno, I have gone back to my tinyIsp from sparkfun
online tutorial
Build Instructions:

Arduino ide sketch with libraries: bootloader.zip


Related pcb (Iteadstudio.com can build for $1.40 each in packs of 10)
   bootloaderPCB.zip

To modify the pcb, use these Eagle definitions:

• .sch: bootloaderPCB.sch
• .brd: bootloaderPCB.brd
• job file: sfe-gerb274x.cam

Image	Part Id	Description	Where	Price	DataSheet
	ZIF Connector	Zero Insertion Force Connector for atmega168 and atmega328	ebay supplier	$2.80
	Male headers	break away straight	ebay supplier	$0.03 (in packs of 150)
	ATMEGA328	Microcontroller speed:16 megahertz RAM:32K	mouser part	$2.73	datasheet
	Atmega168	Microcontroller speed:16 megahertz Ram:16K	mouser part	$2.77 (in packs of 10)	datasheet

Pinout:

http://www.iteadstudio.com has these for about $10.00

Tutorial below points to a library that looks good.
online tutorial

Warning: the following pcb is not verified yet
Related pcb (Iteadstudio.com can build for $1.40 each in packs of 10)
   COGShield.zip

To modify the pcb, use these Eagle definitions:

• .sch: COGShield.sch
• .brd: COGShield.brd
• job file: sfe-gerb274x.cam

• .sch: DEI1016.sch
• .brd: DEI1016.brd
• job file: sfe-gerb274x.cam

Image	Description
	DEI1016 Pinout
	DEI1016 Block

Image	Part Id	Description	Where	Price	DataSheet
	deo1016 A429 Transmitter	16 receive and transmit channels	deiaz part	$10	datasheet

Below is sample code that I wrote to interface with the nrf24l01 and drive multiple tanks. By double clicking the fire button different units can be selected.

Arduino ide sketch with libraries: namcoPacman.zip

Image	Part Id	Description	Where	Price	DataSheet
	Usb to Serial Converter	Different pinout than FTDI but has all functionality of an FTDI	http://stores.ebay.com/VirtualVillage-France-Delta?_trksid=p4340.l2563	$3.99
	3.3 Voltage Regulator	Could be used with 2.4 mHz transceiver	mouser part	$.73	datasheet
	2.4 Megahertz Transceiver	More than 100 channels	iteadstudio part	$4	datasheet
	10K ohm resistor	1/4 watt through-hole resistor	mouser part	$0.03 (in packs of 100	datasheet
	clock	16 megahertz	mouser part	$0.24	datasheet
	Atmega168	Microcontroller speed:16 megahertz Ram:16K	mouser part	$2.77 (in packs of 10)	datasheet

note: a 5ms delay (instead of 10ms) is sufficient after the write is executed. 0 delay does not work.
online tutorial

Arduino ide sketch with libraries: EEPROM.zip

Image	Part Id	Description	Where	Price	DataSheet
	EEPROM 24LC256	32K x 8 bits	mouser part	$1.13	datasheet

Based on the webserver.pde, the pin connections are:

ENC28J60 Pin	Arduino Pin
CLK OUT	Not Connected
(ENC WOL)	Not Connected
SI (Master Out Slave In)	D11
CS	D10
3.3V VCC	3.3V Linear Voltage Regulator
INT (ENC)	D2
SO (Master In Slave Out)	D12
SCK	D13
RESET	Reset
GND	GND

The tutorial below walks you through connecting the ethernet module to a laptop and accessing it directly via the LAN connection. For Win7 you will need to go to the Control Panel -> Network and Sharing Center then select Local Area Network and Properties.
Note: You may need to turn off your wireless adapter if connecting to pc

Elec Freaks also has a tutorial with a tcp/ip library
online tutorial
Arduino ide sketch with libraries: webserver.zip

Warning: the following pcb is not verified yet
Related pcb (Iteadstudio.com can build for $1.40 each in packs of 10)
   etherWeeny.zip

To modify the pcb, use these Eagle definitions:

• .sch: etherWeeny.sch
• .brd: etherWeeny.brd
• job file: sfe-gerb274x.cam

Image	Part Id	Description	Where	Price	DataSheet
	ENC28J60	Ethernet module	ebay supplier	$7.30
	Custom pcb creation	5cm x 5cm maximum dimensions, send a .zip file, you receive a batch of 10	iteadstudio part	$10 + $4 shipping
	.1 uF capacitor	Could be connected to reset line and usb to serial dtr line	mouser part	$0.05	datasheet
	Usb to Serial Converter	Different pinout than FTDI but has all functionality of an FTDI	http://stores.ebay.com/VirtualVillage-France-Delta?_trksid=p4340.l2563	$3.99
	3.3 Voltage Regulator	Could be used with 2.4 mHz transceiver	mouser part	$.73	datasheet
	Female Header	Through hole solder	ebay supplier	$0.02 per individual header(in packs of 200)
	10K ohm resistor	1/4 watt through-hole resistor	mouser part	$0.03 (in packs of 100	datasheet
	clock	16 megahertz	mouser part	$0.24	datasheet
	Atmega168	Microcontroller speed:16 megahertz Ram:16K	mouser part	$2.77 (in packs of 10)	datasheet

<iframe id="frameId" src="http://url/"></iframe>

<Script>
function refreshFrame()
{
  parent.frameId.location.href="http://url/";
  setTimeout ("refreshFrame()",2000);
}
refreshFrame(); // Start the refresh
</Script>

• .sch: etherWeeny.sch
• .brd: etherWeeny.brd
• job file: sfe-gerb274x.cam

• Determine the ip address of your router by using www.myipaddress.com.
• Load and configure the Enc28j60 as a webserver
• Go to your router configuration page
• Disable DMZ on your router
• Enable router firewall at lowest security setting
• Set port forwarding for port 80 to the enc28j60 located at its local ip address
• Check router status page (if possible) to verify firewall is routing your port forward request correctly
• You can access the local address of the enc28j60 from within the network for testing
• You can only access the enc28j60 via the routers ip address if you are outside the local network

• .sch: etherWeeny.sch
• .brd: etherWeeny.brd
• job file: sfe-gerb274x.cam

  http://address.of.the.enc28j60/cmd=X

 static char baseurl[]="http://65.103.50.60/";

        if(on_off) { // cmd is set to 1 
          // Show off button
        } else { // cmd is set to 2 (off) 
          // Show on button
        } 

• .sch: etherWeeny.sch
• .brd: etherWeeny.brd
• job file: sfe-gerb274x.cam

Image	Part Id	Description	Where	Price	DataSheet
	ENC28J60	Ethernet module	ebay supplier	$7.30

• MAC address
  Newer shields may have a sticker written on them indicating their MAC, otherwise you can pick your own unique address. My sketch had the MAC address selected as:

  byte mac[] = {  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };

• Get an IP address from your router.
  
  1. Go to your router web-page.
  2. Find DHCP (reservation) page
  3. Manually enter the MAC address of the ethernet shield ("de-ad-be-ef-fe-ed" for example)
  4. Select the next available ip address (192.168.0.17 for example)
  5. Send the info to the router
• Modify the sketch to set your MAC and IP address, for example:

  byte mac[] = {  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
  byte ip[] = { 192,168,0,17 };
  

• Modify the server address if necessary
  My sketch would not connect because the ip address for google was old. I found the ip address for Yahoo and used that instead:

  byte server[] = { 209,191,122,70 }; // Yahoo
  

  Note: To get the ip address of a .com, execute the "ping" command from a dos shell for example: "ping www.yahoo.com"
• Upload the sketch, and connect a LAN cable from the ethernet shield to your router and the usb cable from the arduino to your laptop. Note: Equipment that is directly connected to a router over a LAN does not need a wireless security password (You probably knew that already)
• View the Serial output of the Arduino. You should see HTML data.

Image	Part Id	Description	Where	Price	DataSheet
	Ethernet Shield	Can connect to internet as client or server	sparkfun part	$46

I used a modified usb to serial adapter to program the SheildWeeny.

Source code and schematics provided below
online tutorial
Arduino ide sketch with libraries: EtherTenRF.zip


Related pcb (Iteadstudio.com can build for $1.40 each in packs of 10)
   ShieldWeeny.zip

To modify the pcb, use these Eagle definitions:

• .sch: ShieldWeeny.sch
• .brd: ShieldWeeny.brd
• job file: sfe-gerb274x.cam

Image	Part Id	Description	Where	Price	DataSheet
	Atmega socket	28pin	Mouser Part	$.32
	470uF cap	Used to smooth out power supply	mouser part	$0.075
	Usb to Serial Converter	Different pinout than FTDI but has all functionality of an FTDI	http://stores.ebay.com/VirtualVillage-France-Delta?_trksid=p4340.l2563	$3.99
	3.3 Voltage Regulator	Could be used with 2.4 mHz transceiver	mouser part	$.73	datasheet
	2.4 Megahertz Transceiver	More than 100 channels	iteadstudio part	$4	datasheet
	Female Header	Through hole solder	ebay supplier	$0.02 per individual header(in packs of 200)
	10K ohm resistor	1/4 watt through-hole resistor	mouser part	$0.03 (in packs of 100	datasheet
	Atmega168	Microcontroller speed:16 megahertz Ram:16K	mouser part	$2.77 (in packs of 10)	datasheet

1. Get an arduino from sparkfun (for example)
2. Download/install the ide: link
3. Connect arduino to computer
4. Double click on a .pde file (IDE should pop up)
5. Select Tool/Board and Tools/Serial Port
6. Press Upload Button (Right arrow on IDE

online tutorial

Image	Part Id	Description	Where	Price	DataSheet
	GPS Module	Red 5V, Black Ground, Yellow 4800 bps serial data, search ebay for gps module	ebay supplier	$15.00

You can modify the eagle schematic or order copies of the pcb below from iteadstudio.Warning:This pcb has not been verified yet (8/13/2011)

Note: You may also need to protect your system from motor flyback.
online tutorial
Orderable kit: Mouser Project

Warning: the following pcb is not verified yet
Related pcb (Iteadstudio.com can build for $1.40 each in packs of 10)
   hBridge2.zip

To modify the pcb, use these Eagle definitions:

• .sch: hBridge2.sch
• .brd: hBridge2.brd
• job file: sfe-gerb274x.cam

Image	Part Id	Description	Where	Price	DataSheet
	NPN Transistor	600 mA Collector current	mouser part	$0.05	datasheet
	PNP Transistor	800 mA Collector current	mouser part	$0.06	datasheet
	Diode	1N4448	mouser part	$0.02 (in groups of 100)	datasheet
	Custom pcb creation	5cm x 5cm maximum dimensions, send a .zip file, you receive a batch of 10	iteadstudio part	$10 + $4 shipping

• .sch: hBridgeProtected.sch
• .brd: hBridgeProtected.brd
• job file: sfe-gerb274x.cam

Image	Part Id	Description	Where	Price	DataSheet
	PNP Transistor	800 mA Collector current	mouser part	$0.06	datasheet
	NPN Transistor	600 mA Collector current	mouser part	$0.05	datasheet

Also see acousticGps project
online tutorial
Arduino ide sketch with libraries: ultrasonicDemo.zip

Image	Part Id	Description	Where	Price	DataSheet
	Ultrasonic Transducer	Used for distance measuring	http://stores.ebay.com/one2freeland2011	$5.40

Power supply = 4.8V (4 x AAA) in a rechargeable pack.
online video

Image	Description
	1/30 Scale M4 Sherman by Heng Long

Sometimes the library used to communicated over I2c (wire), is not compatible with the library created to read the component (like ps2 mouse library). When this occurs, one solution is to use 2 atmega168s. The first one reads the component and the second atmega168 passes this information over I2C network (using wire). The 2 atmegas can communicate by connecting the serial tx (D2) of the 1st atmega to the serial rx (D1) of the second atmega.

Currently I am working on a pcb that will make the assembly of this component easier. The finished master/slave components should snap together.

A simple dynamic network protocol has been created for the nrf24l01. This allows the network to "heal" if a node is removed.
Possible sensors include:

• Sump Pump, water level and current draw
• Tweet a Watt on any item
• Home Temperature
• Water detection/leakage near any water source
• Pet detection/identification using RFID
• Plant soil humidity
• Motion detection
• Garage Door up/down

• Turn light on/off
• Open doggie door?
• Feed pet?
• Water pet or plant

Image	Part Id	Description	Where	Price	DataSheet
	5V power supply	Alternate to wallwart	ebay supplier	$15
	2.4 Megahertz Transceiver	More than 100 channels	iteadstudio part	$4	datasheet
	Atmega168	Microcontroller speed:16 megahertz Ram:16K	mouser part	$2.77 (in packs of 10)	datasheet

• .sch: nRF24L01usbHBridge.sch
• .brd: nRF24L01usbHBridge.brd
• job file: sfe-gerb274x.cam

Image	Part Id	Description	Where	Price	DataSheet
	Custom pcb creation	5cm x 5cm maximum dimensions, send a .zip file, you receive a batch of 10	iteadstudio part	$10 + $4 shipping
	Usb to Serial Converter	Different pinout than FTDI but has all functionality of an FTDI	http://stores.ebay.com/VirtualVillage-France-Delta?_trksid=p4340.l2563	$3.99
	3.3 Voltage Regulator	Could be used with 2.4 mHz transceiver	mouser part	$.73	datasheet
	2.4 Megahertz Transceiver	More than 100 channels	iteadstudio part	$4	datasheet
	Mini DPDT Relay, only 3 V required	Double pull double throw, these have a polarity	mouser part	$2.06	datasheet
	10K ohm resistor	1/4 watt through-hole resistor	mouser part	$0.03 (in packs of 100	datasheet
	clock	16 megahertz	mouser part	$0.24	datasheet
	Atmega168	Microcontroller speed:16 megahertz Ram:16K	mouser part	$2.77 (in packs of 10)	datasheet
	IR Detector	IR detector with preamp	mouser part	$.60	datasheet
	IR Transmitter	17 degrees half intensity	mouser part	$.36	datasheet
	HBridge	Control 2 dc motors forward/reverse. 5V output provided. PWM input used for speed control	ebay supplier	$8.50 free shipping (bid)

• .sch: LCDDisplayShield.sch
• .brd: LCDDisplayShield.brd
• job file: sfe-gerb274x.cam

Image	Part Id	Description	Where	Price	DataSheet
	LCD Module	20x4 character blue backlight	Ebay Supplier	$8
	470uF cap	Used to smooth out power supply	mouser part	$0.075
	Usb to Serial Converter	Different pinout than FTDI but has all functionality of an FTDI	http://stores.ebay.com/VirtualVillage-France-Delta?_trksid=p4340.l2563	$3.99
	Female Header	Through hole solder	ebay supplier	$0.02 per individual header(in packs of 200)
	10K ohm resistor	1/4 watt through-hole resistor	mouser part	$0.03 (in packs of 100	datasheet
	clock	16 megahertz	mouser part	$0.24	datasheet
	Atmega168	Microcontroller speed:16 megahertz Ram:16K	mouser part	$2.77 (in packs of 10)	datasheet

  void showCh ( int x, int y, byte ch)
  {
      if (x < 20)
        if (ch)
          printChar (ch1, byte(x*6), byte(y*8));

      // Force the previous write...not sure why this is necessary                 
      if (x < 20)
        setXY(byte(x*6), byte(y*8), 5, 9);
  }

Image	Part Id	Description	Where	Price	DataSheet
	LCD Shield	Kit form 128 x 128 pixels	nkcelectronics part	$19.95	datasheet

• .sch: voxelShield.sch
• .brd: voxelShield.brd
• job file: sfe-gerb274x.cam

• Auto. Unit controls its own movement. In this mode it will use the 4 additional sets of IR receivers to "hunt" for other megabotz. Too bad they didn't have range detectors. A nice enhancement would be to make them avoid obstacles.
• Manual. Unit is controlled by an IR controller

Image	Description
	Megabotz IR Battle

On the down side, the treads are rather cheap and there is little space for an additional pcb.
Here is a picture of the receiver board with the control pins broken out. You can drive them straight from arduino without a 1k ohm resistor because there is already a 1 k ohm resistor on the board.

Orderable kit: Mouser Project


Warning: the following pcb is not verified yet
Related pcb (Iteadstudio.com can build for $1.40 each in packs of 10)
   nRF24L01usbHBridge.zip

To modify the pcb, use these Eagle definitions:

• .sch: nRF24L01usbHBridge.sch
• .brd: nRF24L01usbHBridge.brd
• job file: sfe-gerb274x.cam

• pinMode(i, INPUT); // Define the digital i/o as an input
• digitalWrite(i, HIGH); // Turn on internal pull-up resistors

Creating midi input shield
Awesome Arduino tutorial

online tutorial
Orderable kit: Mouser Project
Arduino ide sketch with libraries: Organ.zip

Image	Part Id	Description	Where	Price	DataSheet
	Midi Female Connector	For Music projects	sparkfun part	$1.95	datasheet

• .sch: nRF24L01usbHBridge.sch
• .brd: nRF24L01usbHBridge.brd
• job file: sfe-gerb274x.cam

Image	Description
	QUAD ATV 4AA Power Supply
	Insides of Quad ATV with new pcb
	New Bright Quality Toy, QUAD ATV

Like most RC toys, they already had an H-Bridge with flyback protection. I wanted to reuse the H-bridge and control the toy via an atmega168 listening for rf commands via a $4.00 transceiver (nrf24l01).

NOTE: You can probe the board by attaching a lead to the VCC and checking its affect. This could fry the board, so only try this on pins going from the microcontroller to a resistor. This is your best bet for a control line
Arduino ide sketch with libraries: modifyRCToy.zip

Warning: the following pcb is not verified yet
Related pcb (Iteadstudio.com can build for $1.40 each in packs of 10)
   nRF24L01usbHBridge.zip

To modify the pcb, use these Eagle definitions:

• .sch: nRF24L01usbHBridge.sch
• .brd: nRF24L01usbHBridge.brd
• job file: sfe-gerb274x.cam

Image	Part Id	Description	Where	Price	DataSheet
	Modifiable Joystick	Namco Pacman TV control, you can get on ebay. It has a 4AA battery holder, on/off switch, fire button, on/off switch, power led, reset button	ebay supplier	$11.00

To modify an RC toy:

• Locate the microcontroller on the receiver board
• Solder control wires to leads that go from microcontroller to resistors
• Test leads by touching the other end to VCC
• Attach these leads that control movement to atmega/arduino

Here is a picture of a NIKKO truck receiver board with control lines identified
Arduino ide sketch with libraries: JEEP.zip

Warning: the following pcb is not verified yet
Related pcb (Iteadstudio.com can build for $1.40 each in packs of 10)
   nRF24L01usbHBridge.zip

To modify the pcb, use these Eagle definitions:

• .sch: nRF24L01usbHBridge.sch
• .brd: nRF24L01usbHBridge.brd
• job file: sfe-gerb274x.cam

Image	Description
	Internal Receiver board plus new pcb
	NIKKO RC Truck
	4.8V power supply

Custom pcb board:

This shield combines an RF module with a Nokia 5110 module plus 3 buttons so that simple menus can be selected.
These menus are provided from another RF transmitter that can optionally be connected to a pc.

See below video to view parts to this project

RF5110Source.zip file below contains directories:

• NRF24L01 - Library for NRF24L01 RF module
• RF5110 - Source code that is loaded in the handheld cube
• RFSlave - Source code that is run on arduino attached to pc
• VBCube - VB source code that is run on pc to talk to arduino via RS232

• .sch: RF5110.sch
• .brd: RF5110.brd
• job file: sfe-gerb274x.cam

Image	Part Id	Description	Where	Price	DataSheet
	LED Cube	Good for a project box, has 4xAAA battery holder	Ebay Supplier	$3.69
	Usb to Serial Converter	Different pinout than FTDI but has all functionality of an FTDI	http://stores.ebay.com/VirtualVillage-France-Delta?_trksid=p4340.l2563	$3.99
	Nokia Graphics Display	84 x 84 pixels	iteadstudio part	$7	datasheet
	Male headers	break away straight	ebay supplier	$0.03 (in packs of 150)
	Female Header	Through hole solder	ebay supplier	$0.02 per individual header(in packs of 200)
	10K ohm resistor	1/4 watt through-hole resistor	mouser part	$0.03 (in packs of 100	datasheet
	clock	16 megahertz	mouser part	$0.24	datasheet
	Atmega168	Microcontroller speed:16 megahertz Ram:16K	mouser part	$2.77 (in packs of 10)	datasheet

Need to verify: A capacitor is required on the power supply between the 3.3 supply and the nrf24l01.
Note: IRQ line does not need to be connected
online tutorial
Arduino ide sketch with libraries: nRF242l01a.zip

Warning: the following pcb is not verified yet
Related pcb (Iteadstudio.com can build for $1.40 each in packs of 10)
   ShieldWeeny.zip

To modify the pcb, use these Eagle definitions:

• .sch: ShieldWeeny.sch
• .brd: ShieldWeeny.brd
• job file: sfe-gerb274x.cam

Image	Description
	nRF24L01 module pinout

Image	Part Id	Description	Where	Price	DataSheet
	220uF cap	Used to smooth out power supply	mouser part	$0.09
	Custom pcb creation	5cm x 5cm maximum dimensions, send a .zip file, you receive a batch of 10	iteadstudio part	$10 + $4 shipping
	3.3 Voltage Regulator	Could be used with 2.4 mHz transceiver	mouser part	$.73	datasheet
	2.4 Megahertz Transceiver	More than 100 channels	iteadstudio part	$4	datasheet
	Atmega168	Microcontroller speed:16 megahertz Ram:16K	mouser part	$2.77 (in packs of 10)	datasheet

I created a version for personal use only described below. I will be moving to the maniacbug version as soon as possible.

The master (UnitNumber == '0') will poll the slaves (UnitNumbers '1'..'9' & 'A'..'Z').
If there is no response within 1 second the master will move on to the next slave. Here are relevant declarations:

unsigned char rx_buf[32] = {0};
unsigned char tx_buf[32] = {0};

/* Initialize the device */
void init_io();

/* Go to transmit mode */
void txMode();

/* Go to receive mode */
void rxMode();

/* transmit a 32 byte buffer */ 
void tx (  unsigned char * buf );

/* Poll receiver.  
   return true if first byte == MYUNITNUMBER.
   place received data (if applicable) in buf */
bool rx ( unsigned char * buf );

• .sch: nRF24L01Serial.sch
• .brd: nRF24L01Serial.brd
• job file: sfe-gerb274x.cam

• GBL


• GBO


• GBS


• GTL


• GTO


• GTS


• TXT (Drill File)

• .sch: protoShield.sch
• .brd: protoShield.brd
• job file: sfe-gerb274x.cam

Image	Part Id	Description	Where	Price	DataSheet
	Custom pcb creation	5cm x 5cm maximum dimensions, send a .zip file, you receive a batch of 10	iteadstudio part	$10 + $4 shipping

• .sch: PS2Wireless.sch
• .brd: PS2Wireless.brd
• job file: sfe-gerb274x.cam

1. Build an applet that the arduino ide can use
   • Download Processing from http://processing.org/download/
   • download procontroll from http://creativecomputing.cc/p5libs/procontroll/
   • Place procontroll folder in your processing directory: modes/java/libraries
   • Run processing.exe and load example: modes/java/libraries/procontroll/examples/procontroll/procontroll.pde
   • Program will error on controllIO.getDevice call. Cause: We need the device name. To get the device name:
   • Add this line before call to controllIO.getDevice: controllIO.printDevices(); This will display all devices connected. Pick your usb device name.
   • Place that name in the getDevice call. My corrected line looked like this: joypad = controllIO.getDevice("Afterglow controller for PS3");
   • Sketch now ran check this video:youtube

Note:To connect to an Arduino, you will need a host shield. This video uses a usb host shield to talk to the ps3 controller. http://www.youtube.com/watch?v=cYcp4gfRY_A

New Direction: Sparkfun has a usb host shield, with examples. This appears to be the way to go....9/3/2011

online tutorial
Build Instructions:

Image	Part Id	Description	Where	Price	DataSheet
	470uF cap	Used to smooth out power supply	mouser part	$0.075
	PSC05	Send X10 Automation commands via serial	ebay supplier	$13
	3.3 Voltage Regulator	Could be used with 2.4 mHz transceiver	mouser part	$.73	datasheet
	Male headers	break away straight	ebay supplier	$0.03 (in packs of 150)

pinMode (11,OUTPUT);
and then activate the pull-up resistor:

digitalWrite (11,HIGH);
A shield could be made that allowed the arduino to send X10 Home automation commands via a PSC05

If you just want to transmit you can simplify the wiring: PSC04
online tutorial

Image	Part Id	Description	Where	Price	DataSheet
	PSC05	Send X10 Automation commands via serial	ebay supplier	$13

• From Video Game Etc you can get a psx analog controller for $5.00 (9/3/2011). This controller seems to have all the buttons as a PS2/PS3 controller.
• Use the psx Analog library and connect to analog arduino pins. I modified the library slightly because my controller type was not found. See sketch link below for source code
• Pinout of the controller is available here.

  Which describes the pinout:
  

• Hookup lines:

  Arduino Pin	line	PSX pin
  14 (Analog 0)	DATA	1
  15 (Analog 1)	COMMAND	2
  16 (Analog 2)	ATT	6
  17 (Analog 3)	CLK	7
  GND	GND	4
  VCC (5V)	VCC	5

Arduino ide sketch with libraries: psxAnalog.zip

Image	Description
	Pinout to cables

• .sch: nRF24L01usbHBridge.sch
• .brd: nRF24L01usbHBridge.brd
• job file: sfe-gerb274x.cam

• You can get these on Ebay for about $5.00 (9/3/2011). These are very early sony controllers, before they added the 2 joysticks and created an analog but it has the same buttons as later models.
• There is a PSX library that can be downloaded from arduino.cc. Based on this comment, if you are having trouble compiling, change line 30 of psx.h to "#include "WProgram.h". That seemed to help me.
• Pinout of the controller is available here.

  Which describes the pinout:
  

• After looking at the example in the psx library directory and correcting:

  // Cannot use pins 2..5 not sure why
  #define dataPin 10
  #define cmndPin 11
  #define attPin 12
  #define clockPin 13
  // Use analog 0 for LED instead of 13, you can use a different pin if you prefer
  #define LEDPin 14
  Psx.setupPins(dataPin, cmndPin, attPin, clockPin, 50);  // Last number is delay in microseconds
  

  You only need to hookup about these lines:

  Arduino Pin	line	PSX pin
  10	DATA	1
  11	COMMAND	2
  12	ATT	6
  13	CLK	7
  GND	GND	4
  VCC (5V)	VCC	5

psx.h has all button HEX definitions

Image	Description
	Pinout to cables

Note: These seem to suffer from processor reset a lot. They have a watch battery backup power supply that keeps the microprocessor energized. I have listed the part below.
online tutorial

Image	Part Id	Description	Where	Price	DataSheet
	L1154 Watch Battery	1.5V used in Rumble Robots	ebay supplier	$0.07 in packs of 50

A couple items to note:

• The sd card should be formatted fat 16. You can format from windows by selecting the drive from My Computer, right clicking and selecting format.
• "FAT" is equivalent to FAT16.


• The file you want to append to should already exist and have at least one byte of data

Note:These pin definitions are contained in the file:
C:Arduinohardwarearduinovariantsstandardpins_arduino.h (Assuming that you installed the Arduino IDE to windows locations: C:Arduino)

const static uint8_t MOSI = 11;
const static uint8_t MISO = 12;
const static uint8_t SCK  = 13;

Spy gear has a tank. I believe that the output from the controller can be fed into a TV through an RCA jack. I need to confirm this. I was able to find the pins that control the movement:

• Single pull single throw.
  Like the common lamp switch it is on or off. It is typically open(off) on default and on(closed) when a voltage is applied across the control terminals
  
• Single pull double throw
  The input line is default connected to one pole and when a control voltage is applied it is connected to the other pole
  
• Double pull double throw
  2 single pull double throw switches within one convenient package

Double pull double throw switches are perfect for controlling forward/reverse on a motor. Connected properly, a motor will run forward on default and reverse when the 5v is passed across the control terminals.

Image	Part Id	Description	Where	Price	DataSheet
	120V outlet controller	Gnd and Digital Input Perfect for Atmega 168/328	makershed part	$20
	Mini DPDT Relay, only 3 V required	Double pull double throw, these have a polarity	mouser part	$2.06	datasheet
	SPST Reed Relay	Single pull single throw with built in 250 ohm resistor	radioshack part	$2.99

// Datasheet of thermistor will specify following values:
#define BCONSTANT 4050.0f
#define T0 298.15f
#define R0 10000.0f

float Temperature(int AnalogInputNumber)
 {
   float R,T;
   float R_Balance = 10000.0f; // Balance Resistor (same resistance as R0 of thermistor)

   R=1024.0f*R_Balance/float(analogRead(AnalogInputNumber))-R_Balance;
   T=1.0f/(1.0f/T0 (1.0f/BCONSTANT)*log(R/R0));
   // Determine Fahrenheit temperature 
   T=9.0f*(T-273.15f)/5.0f 32.0f;
 
  return T;
 }

Image	Part Id	Description	Where	Price	DataSheet
	Thermistor	Used in temperature measurement	ebay supplier	$0.25 (in packs of 10)

• Base: Switching currrent
• Collector: Load
• Emitter:Ground

Note:Applying a voltage to the base will allow current to flow.
online tutorial
online video

Image	Part Id	Description	Where	Price	DataSheet
	TIP120	NPN Darlington Transistor	mouser part	$.68	datasheet

• Base: Switching currrent
• Collector: Load
• Emitter: Power Supply

Note: Applying a voltage to the base will inhibit the flow of current
online tutorial

Image	Part Id	Description	Where	Price	DataSheet
	TIP125	PNP Darlington Transistor	mouser part	$.53	datasheet

• .sch: TLC5940Shield.sch
• .brd: TLC5940Shield.brd
• job file: sfe-gerb274x.cam

Image	Part Id	Description	Where	Price	DataSheet
	RGB Driver	TLC5940 RGB Driver, Can control 16 leds with pwm output	http://stores.ebay.com/NooElec	$2.20 (in packs of 5)	datasheet
	RGB LED with common anode	Can mix to create other colors	http://stores.ebay.com/NooElec	$.45 (in packs of 25)	datasheet

Using a standard remote, you can allocate time for them on the timer. When they start watching television, you activate the timer and it begins counting down. This shows how much time they have left and how much longer they can watch.

The next step of this project is to have the timer shut the device off when the time has elapsed. This could be done via X-10 or commercially available outlets that can be turned on or off via an infra red pulse.
online video

Image	Part Id	Description	Where	Price	DataSheet
	LED Cube	Good for a project box, has 4xAAA battery holder	Ebay Supplier	$3.69
	7 segment LED Display 16	4 digits, 16 pins, has colon for clock	http://www.sparkfun.com	$1.95	datasheet
	IR Remote	Sony Compatible Remote	http://stores.ebay.com/toymodel55	$1.37
	Female Header	Through hole solder	ebay supplier	$0.02 per individual header(in packs of 200)
	10K ohm resistor	1/4 watt through-hole resistor	mouser part	$0.03 (in packs of 100	datasheet
	clock	16 megahertz	mouser part	$0.24	datasheet
	Atmega168	Microcontroller speed:16 megahertz Ram:16K	mouser part	$2.77 (in packs of 10)	datasheet
	IR Detector	IR detector with preamp	mouser part	$.60	datasheet

The DTR line will go low (and stay low) after the sketch compiles and upload begins. However the reset line for the atmega needs to stay low only for a moment, so an additional .1 uF capacitor needs to be added to the circuit (between the dtr and the reset pin, d0).

Consequently a jumper should be created from the dtr to the reset pin with a cap inserted if you want to be able to attach and detach this device.

Image	Part Id	Description	Where	Price	DataSheet
	.1 uF capacitor	Could be connected to reset line and usb to serial dtr line	mouser part	$0.05	datasheet
	Usb to Serial Converter	Different pinout than FTDI but has all functionality of an FTDI	http://stores.ebay.com/VirtualVillage-France-Delta?_trksid=p4340.l2563	$3.99
	10K ohm resistor	1/4 watt through-hole resistor	mouser part	$0.03 (in packs of 100	datasheet
	clock	16 megahertz	mouser part	$0.24	datasheet
	Atmega168	Microcontroller speed:16 megahertz Ram:16K	mouser part	$2.77 (in packs of 10)	datasheet

• Overlay text and graphics onto a video signal from a camera, DVR, DVD player, VCR or any other source of composite video.
• Capture low-res video image frames for display or video processing. Give your Arduino the gift of sight!
• Perform object detection for computer vision projects.
• Decode closed captioning or XDS (extended data services) data embedded in television broadcasts.
• Works with NTSC (North America) or PAL (rest of the world) television standards.
• Uses digital pins 2, 6, 7, 8, and optionally 9. Uses analog pin 2.

Image	Part Id	Description	Where	Price	DataSheet
	Video Experimenter		nootropicdesign part	$33

How to Sync a WiiMote with a PC

• Show bluetooth devices this could be from control panel
• Click on add to start the bluetooth device wizard
• Check the box indicating device is setup and ready, no passcode required
• Press 1 and 2 on the wiimote at the same time until the lights blink
• Wait for the wizard to detect the wiimote, the wizard will show "Nintendo RVL-CNT-01" when it detects the wiimote
• Click Next
• Press 1 and 2 again click next to finish the activation wizard. You will need to re-sync every time the Wiimote powers down

Wiimote test app: http://www.wiihacks.com/general-homebrew-hack-issues/240-wiimotetest-app.html

Source code and downloads http://johnnylee.net/projects/wii/
This one should also work: http://www.dealextreme.com/p/super-mini-bluetooth-2-0-adapter-dongle-vista-compatible-11866
online tutorial

Color	Description	Arduino Pin
Red	3.3V	Vcc
White	Ground	Ground
Green	Data	Analog pin4
Yellow	Clock	Analog Pin5

Note: Nun-chuck can power the atmega168 chip, also wire library needs change

The tutorial below did it by hacking a wiimote camera however, this tutorial mentions that blobs can be read via the nun-chuck using I2C. click on source code on this post: http://trandi.wordpress.com/2011/05/11/wiimote-ir-camera-with-arduino/ You can also get nun-chuck x/y information : http://www.windmeadow.com/node/37 and http://www.windmeadow.com/node/42
Data on Ir-Camera: http://wiibrew.org/wiki/Wiimote#IR_Camera
Possible pcb schematic: http://trandi.files.wordpress.com/2011/04/irsensor_circuit2.jpg
Disassembling the wiimote for the camera: http://trandi.wordpress.com/2011/04/03/the-wiimote-and-fez-domino/

online tutorial