Tuesday 5 July 2011

Fan controller

The project is a fan controller, it's a simple remote switch power via IR.
In my case I am going to use the switch power to turn on/off a wall fan with a remote controller of the television.


  • Fez Domino ( it's similar as Arduino but you code it in C# )
  • IR Receive Brakout
  • Relay 230V
  • Remote IR
  • Power BOX
The project is using Fez Domino instead Arduino because I realized that this kind of platform it's too slowly and it good only for small project as this.
I figured out what is the code of a special button on the remote controller and I coded the Fez Domino to intercept it. When it intercept the IR code, it turns on or off ( status = ! actual status ) the Relay.

I recycled  a old Nokia power supply and it consume only 1.5 Watt.


Monday 13 June 2011


Dopo una lunga attesa ho convertito maggior parte del mio codice per Arduino.
I componenti sono funzionati subito al volo, non come per Fez Domino dove ho dovuto tribulare, ora l'unico intoppo è la camera che mi ritorna 1/4 dell'immagine.

Ho testato il modem gprs e sono riuscito a far muovere il servo da remoto, finalmente!

Monday 30 May 2011

Arduino Uno


The Arduino Uno is a microcontroller board based on the ATmega328 (datasheet). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.
The Uno differs from all preceding boards in that it does not use the FTDI USB-to-serial driver chip. Instead, it features the Atmega8U2 programmed as a USB-to-serial converter.
"Uno" means one in Italian and is named to mark the upcoming release of Arduino 1.0. The Uno and version 1.0 will be the reference versions of Arduino, moving forward. The Uno is the latest in a series of USB Arduino boards, and the reference model for the Arduino platform; for a comparison with previous versions, see the index of Arduino boards.


Operating Voltage5V
Input Voltage (recommended)7-12V
Input Voltage (limits)6-20V
Digital I/O Pins14 (of which 6 provide PWM output)
Analog Input Pins6
DC Current per I/O Pin40 mA
DC Current for 3.3V Pin50 mA
Flash Memory32 KB (ATmega328) of which 0.5 KB used by bootloader
SRAM2 KB (ATmega328)
EEPROM1 KB (ATmega328)
Clock Speed16 MHz

Problems and solutions

Ho constatato che il Fez domino non è adatto per questo genere di progetto, allora ho iniziato a comprare il mio nuovo controller, Arduino UNO.
Con l'Arduino ho un supporto migliore ed è più facile sviluppare a livello hardware, il Fez domino non è ancora pronto per questo genere di cose.

Come si puo trovare su internet, si puo prendere spunto su da questo progetto http://jayeshprojects.blogspot.com/2010/04/real-time-mobile-gps-tracker-with.html o vi sono librerie per aiutarti nello sviluppo.

Ora mi dedico alla riscrittura del codice per l'arduino.

Cellular Shield with SM5100B

Description: The Cellular Shield for Arduino includes all the parts needed to interface your Arduino with an SM5100B cellular module. This allows you to easily add SMS, GSM/GPRS, and TCP/IP functionalities to your Arduino-based project. All you need to add cellular functionality to your Arduino project is a SIM card (pre-paid or straight from your phone) and an antenna and you can start sending Serial.print statements to make calls, send texts and serve web pages!
 The main components of the Cellular Shield are a 60-pin SM5100B connector, a SIM card socket, and an SPX29302 voltage regulator configured to regulate the Arduino's raw voltage to 3.8V. The board's red LED indicates power. The Arduino's reset button is also brought out on the shield.

Two solder jumpers on the board allow you to select which serial pins interface with the cellular module - software (D2, D3) or hardware (D0, D1). There is also a 5-pin, 0.1" spaced header with connections for microphone inputs and speaker outputs. Headers are not soldered on, we recommend the 6 and 8-pin stackable headers.

The SM5100B cellular module is included with this product, however an antenna is not. It is pre-configured to 9600bps.

Friday 13 May 2011

Relay Module 5V RLY101-FR4

1 PCS One channel relay module board, for PIC / AVR / 8051 etc project.
Led indicator for each relay channel.
Use BC547  driving relay, Improve the reliability of action.
Power Supply: 5V / 400mA.
Input voltage: 0V - 0.5V (relay is OFF),
                         0.5V - 4V (unknown state),
                         4V - 5V (relay is ON).
PCB thickness: 1.6mm.

Relay Spec:
Coil: Voltage: 5V DC.    Current: 71.4mA.
Contact Capacity: 250 VAC/7 Amp or 30 VDC/10 Amp.

Sunday 8 May 2011

SIMCOM SIM300 GPRS+GSM Module Mini Board AVR Arduino

General features

  • Tri-Band GSM/GPRS 900/1800/1900MHz or Quad-Band GSM.GPRS 850/900/1800/1900MHz

  • GPRS multi-slot class 10/8

  • GPRS mobile station class B

  • Compliant to GSM phase 2/2+
           Class 4 (2W @ 900MHz)
           Class 1 (1W @1800/1900MHz)

  • Dimensions: 50mmx33mmx6.2mm

  • Weight: 13.8g

  • Control via AT commands (GSM 07.07, 07.05 and SIMCom enhanced AT Commands)

  • SIM application toolkit

  • Supply voltage range 3.4V - 4.5V

  • Low power consumption

  • Normal operation temperature:
          -30°C to +70°C

  • Restricted operation temperature:
          -35°C to +80°C

  • Storage temperature:
          -40°C to +85°C

  • More information: http://projectsmax246.blogspot.com/2011/04/socket-and-gprs.html

    FEZ Domino

    Description: Say hello to the FEZ  domino. This is a tiny open source board running Microsoft .NET Micro Framework. This allows you to more efficiently write code using Microsoft’s free Visual C# express and the C# programming language. Build your next projects in minutes by connecting FEZ Domino to one of the shields or the many available components. Many libraries are already included like FAT file system, threading, UART, SPI, I2C, GPIO, PWM, ADC, DAC and many more.
    Check out this comparison chart between the FEZ Domino and the FEZ Panda.

    • Based on Microsoft's .NET Micro Framework
    • Runs on 72Mhz NXP ARM processors
    • Pin compatible with Arduino
    • Shield Compatable
    • It's freakin' easy to use!

    LinkSprite JPEG Color Camera TTL Interface

    Description: The LinkSprite JPEG color camera allows you to capture and output JPEG images through UART, making it easy to integrate into an existing design.
    Note: Cameras purchased before November 01, 2010 output RS232 serial data, so you will need a level converter if you plan on connecting it to an Arduino or other microcontroller. See the related items for an appropriate converter. Cameras purchased after this time are use a TTL interface.
    Note: These only work reliably with a 5V power supply, even though the manual states they can work at 3.3V.
    • VGA/QVGA/160x120 resolution
    • Support capture JPEG from serial port
    • Default baud rate of serial port is 38400
    • 5V power supply
    • Size 32X32mm
    • Current consumption: 80-100mA

     using (var camera = new LinkspriteCamera(new SerialPort("COM1", 38400, Parity.None, 8, StopBits.One)))
                    //DoSuccessFail(camera.Reset, "Reset successfull", "ERROR resetting");
                    //DoSuccessFail(() => camera.SetPictureSize(LinkspriteCamera.SET_SIZE_640x480), "Size change successfull", "ERROR changing size");
                    //DoSuccessFail(camera.Reset, "Reset successfull", "ERROR resetting");
                    DoSuccessFail(camera.Stop, "Stop successfull", "ERROR stopping");

    FEZ Library: http://code.tinyclr.com/project/220/linksprite-camera-library/

    Sample pic

    Bad point

    The camera doesn't have a white balance and the pictures are half color and half BW ( outdoor )

    Digital Infrared motion sensor

    This is a simple to use motion sensor. Power it up and wait 1-2 seconds for the sensor to get a snapshot of the still room. If anything moves after that period, the 'alarm' pin will go low.
    • Type: Digital
    • Supply Voltage:3~5V
    • Current:50μA
    • Working temperature:0℃~+70℃
    • Output level(HIGH):4V
    • Output level(LOW):0.4V
    • Detect angle:110 Degree
    • Detect distance:7 meters
    • Size:28mm×36mm
    • Weight:25g


    InterruptPort  PIR = new InterruptPort((Cpu.Pin)FEZ_Pin.Interrupt.Di13, false, Port.REsistorMode.PullDown, Port.InterruptMode.InterruptEdgeHigh);
    PIR.OnInterrupt += new NativeEventHandler(doSomething);

    static void doSomething(uint port, uint state, DateTime time) {
        //do something, turn on led, write file, ecc

    Saturday 7 May 2011

    Humidity and Temperature Sensor - DHT22


    Description: The DHT-22 is a low cost humidity and temperature sensor with a single wire digital interface. The sensor is calibrated and doesn't require extra components so you can get right to measuring relative humidity and temperature.
    • 3.3-6V Input
    • 1-1.5mA measuring current
    • 40-50 uA standby current
    • Humidity from 0-100% RH
    • -40 - 80 degrees C temperature range
    • +-2% RH accuracy
    • +-0.5 degrees C


    DHT11 MyDHT11 = new DHT11((Cpu.Pin)FEZ_Pin.Digital.Di6, (Cpu.Pin)FEZ_Pin.Digital.Di7);
    while (true)
        if (MyDHT11.ReadSensor())
            Debug.Print("Temperature = " + MyDHT11.Temperature.ToString() + "°C");
            Debug.Print("Humidity    = " + MyDHT11.Humidity.ToString() + "%");                   
        else Debug.Print("DHT11 Error : " + MyDHT11.LastError);
    FEZ Library 

    Friday 6 May 2011

    Camera works with the sensor

    Finalmente ho ricevuto il pacco con gli ultimi pezzi per completare la mia opera, il contenuto era della Camera e sensore di temperatura.

    Nell'ordinazione ho inserito un supporto per saldare sulle piastre o tenere fermi due pezzi di filo. Questo apparecchio mi è servito per una buona saldatura dei fili della Camera visto che non avevo una presa a 5 pin.
    Invece è stato un pò piu rude il collegamento sulla piastra dove mi sono affidato al mio amico Scotch! Non preoccupatevi, nei prossimi giorni provvederò nella saldatura.
    Il risultato finale non era quello desiderato, però ormai per il prezzo e le specifiche dell'HW me lo potevo aspettare.
    Finaly I received the pack with the last items to complete the my project, in the box were the camera and the temperature sensor.

    I bought a support that it cans help me to weld the cable on the plate.
    I settled 4 cables on the camera's board because I hadn't a plug for 5 cables.

    Instead the connection on the FEZ was a little rude with the magic scotch! I know that is the worst solution but don't worries I will change that as soon as possible.

    The final result wasn't that I wished but already due the price and the specification about the HW I could imagine this.

    Tuesday 3 May 2011

    MicroSD and Configuration

    Nell'attesa che mi arrivano i nuovi pezzi dalla China, ho iniziato a sviluppare il supporto di storage dove si troveranno tutti i dati,foto e altro.

    La programmazione non era stata un problema a parte un piccolo intoppo sulla restituzione del Unix timestamp e la regolazione dell'ora.

    Nella prossima settimana spero di continuare e testare le nuove funzionalità, il sensore di movimento, termometro e finire la torretta.

    While waiting I got the new items from China and then I began to developer the storage system where they will stay all data, pics and other.

    The coding wasn't a problem apart a little trouble about the Unix timestamp and the time setting.

    The next week I hope to conitnue and test the new features: the motion sensor, therm and the motor system.

    Monday 2 May 2011

    PIR and IO Expansion

    Oggi con mia grande gioia ho ricevuto alcuni pezzi da DFRobot.com, così ho potuto testare e completare un'altro pezzo del mio progetto.

    Ho testato il sensore di movimento e la scheda di espansione con alimentare esterna per le periferiche esterne.

    Inoltre ho scoperto che il Real time clock si resetta ad ogni avvio, questo perchè non vi è un condensatore o batteria collegato alla scheda.
    Perciò dovro aggiungere alla mia lista una batteria da 3V per tenere il RTC attivo.

    Wednesday 27 April 2011

    Socket and GPRS

    Frugando nel mio disordine ho trovato 4 batterie da 1.2V 9000mAh l'una e collegandole in serie sono riuscito a far funzionare il GPRS senza che si spegnesse.

    Ho eseguito la registrazine alla rete, attivato il GPRS e mi sono fatto restituire l'ip pubblico, esulto di gioia :D!

    >> AT+CGATT=1    - Attach to GPRS Service
    << OK

    >> AT+CGDCONT=1,"IP","internet"    - Define PDP Context (cid, PDP type, APN)
    << OK

    >> AT+CDNSCFG="","" - Configure Domain Name Server (primary DNS, secondary DNS)
    << OK

    >> AT+CSTT="internet","","" - Start Task & set APN, User ID, and password
    << OK

    >> AT+CIICR     - Bring up wireless connection with GPRS - THIS MAY TAKE A WHILE
    << OK

    >> AT+CIFSR        - Get Local IP address
    <<    - returns IP address assigned to your module
    << OK

    >> AT+CIPSTATUS        - Get Connection Status
    << OK
    << STATE: IP STATUS    - returns status of connection, needs to be 'IP STATUS' before you can connect to a server
    Ma prima di tutto ciò ho sviluppato in Python il Socket server che mi permetterà di communicare tramite la pagina PHP e il Fez Domino.
    Ho preso una base di un Socket server che serviva a fare da chat e l'ho rifatto con la gestione dei comandi.
    Inoltre ho completato la pagina PHP che si occuperà nella richiesta delle informazioni.

    Socket server:
    • Library Socket
    PHP Client:
    • fsockopen
    Fez Domino:
    • Library Socket

    Rummaging into the my disorder I found 4 batteries of 1.2V 9000mAh each and then connecting these in series I successful to work the GPRS Modulo without problems.

    I done the operator registration, activated the GPRS and then I got the public IP, I was very happy!

    But before that I developed the Socket server by Python that I will communicate through the PHP page and Fez Domino.
    I took the base of Chat server and I rewrite that with the main functions.

    Also I done the PHP page that it will get the information and print on screen.

    Thursday 21 April 2011

    Gprs Module

    Oggi ho provato a inviare un sms e chiamare tramite i comandi AT.
    Ho riscontrato un problema riguardante all'alimentazione, non riuscivo a tenere attivo il modulo ad ogni registrazione alla rete poichè fà un picco di 2A e la batteria non riusciva darglielo.
    Ora sono in attesa che il produttore mi confermi quale pezzo comprare.

    Eccovi qua alcuni esempi di comandi:

    Registrazione alla rete

    AT+CFUN=1 //Set ME o full functionality.
    AT+CMGF=1 //Set text mode
    AT+CPIN=1234  //Set up sim pin
    AT+CREG=1 //Report registration
    AT+COPS=0 //Ask for automatic registration


    ATD<num> //Call the <num>

    Invio sms

    AT+CMGS=<num> //Send text to <num>
    //Write text
    <Ctrl+Z> //Send

    Today I tried to send a sms and call through AT commands.
    I discovered a problem about the power, I couldn't take on the module to each registration to the network because it takes sometimes 2A and the battery couldn't give that.
    Now  I'm waiting that the producer give me an answer about which item I need to buy.

    There are some example how to use AT commands ( see above ) .

    Tuesday 19 April 2011

    Finally it works!

    Finalmente ora funziona, errore mio dove usavo un alimentazione esterna e non la passavo tramite il Fez Domino.

    Ora continuerò il mio progetto, qua un esempio di codice con video:

    Servo s = new Servo((Cpu.Pin)FEZ_Pin.PWM.Di10, (Cpu.Pin)FEZ_Pin.PWM.Di9);
                for (int i = 0; i < 30; i++)

                for (int i = 0; i < 30; i++)


    Il servo si muove da 0 a -30 gradi e poi da -30 a 0  gradi.
    Attualmente sto lavorando nella organizzazione del codice e dei thread che dovranno girare al momento della messa in funzione.

    Finally works now, It was my error about the power where I had connected directly to servo and not through the Fez Domino.

    Now I'm working to make the next step of my project ( up you can see a little part of code ).

    The servo moves between 0 and -30 degrade and  then between -30 and 0 degrade.
    Actualy I'm working to organize the code and the threads that will be executed when the project will be finished.

    Thursday 14 April 2011

    Schematics Socket

    Oggi mi sono imbattuto nel problema della communciazione dei dati tra FEZ Domino e l'interfaccia Web, avevo alcuni dubbi siccome non potevo fare una connessione diretta poichè l'ip del gprs non lo permette.

    Il brainstorming era quello di trovare una soluzione semplice ed efficace.
    Alla fine ho optato nel creare un server in python dove le due parti si scambiano le informazioni  ( come una chat IRC ).

    Inoltre adoperando questa opzione è possibile diminuire le operazioni fatte dal Fez Domino ed eseguire solo lo stretto necessario.

    Today I stumbled into a trouble about communication between FEZ Domino and the web interface, I had some doubts because I couldn't do a direct connection because the ip gprs won't allow it.

    The brainstorming was that to find a simply and perfomance solution.
    In the end I chose to make a server with python where both sides will exchange information

    Also striving this option is possible to decrease the operation of Fez domino and to execute only the important operation.


    Wednesday 13 April 2011

    Fez Domino

    Oggi è arrivato la parte principale, il FEz Domino, ho provato a creare i primi programmi del tipo "Scrivi Hello world", "Premi il pulsante  e accendi il led", "Led Blink".

    La programmazione è veramente facile, con un minimo di conoscienza della programmazione ad oggetti, tutti posso creare un'applicazione.

    Ho anticipato l'arrivo della board col sviluppare la classe per la gestione dei servi, ora devo riuscire a creare un'interfaccia grafica per la gestione.

    Today is arrived the main part, the Fez Domino, and I tried to make some programms as "Write Hello World", "Press button and then turn on the led", "Led blink".

    The developing is realy easy, with a minimal knowledges of OGG you can make an application.

    I anticipated the arrival of the board with I developed the class of the management of Servo and then now I need to make a web interface for management.

    Tuesday 5 April 2011

    Shopping list

    Ho iniziato a comprare alcuni pezzi per iniziare il progetto, ecco la mia lista:
    • Servo SG90
     Product name: SG90 9g Servo
      Dimension: 23mm x 12.2mm x 29mm
      Weight: 9g
      Stall Torque. 1.5Kg/cm at 4.8V
     Operationg Speed: 0.12sec / 60 degress ( 4.8v no load)

    •  Jumpers Wires Male/Female
     Wire AWG: 24
     Lenght: 20cm and 30cm

    Power input: 5+
    Communcation: RS232/TTL
    Applications: SMS GPRS and Call

    •  Fez Domino
         Based on Microsoft's .NET Micro Framework
        Runs on 72Mhz NXP ARM processors
        Pin compatible with Arduino
        Shield Compatable
        It's freakin' easy to use!

    Ho comprato il modulo gprs ora siccome era un'offerta su ebay, 40 dollari invece dei 150 dollari del modulo ufficiale per Arduino e Fez.
    Appena mi arrivano i pezzi inizierò nello sviluppare il movimento dei servi ( per girare la camera ) e un'interfaccia web per gestire il movimento.


    I began buying some items to start my project and this is my list: ( look up )

    I already bought the gprs module whereas I found a good offer in Ebay, just 40 dollar instead 150 dollar of official module for Arduino and Fez.
    As soon as I reach the pieces I will begin to develop moviment of servo  ( to turn  the camera ) and a web interface for managing the moviment.

    Sunday 3 April 2011

    Descrizione / Description

    Il progetto consiste nel creare una webcam motorizzata che sarà comandata tramite un modulo gprs ed eventualmente implmentare il modulo sensor motion e sensore temperatura.

    I pezzi scelti sono i seguenti:
    • Fez Domino
    • DFRobot I / O Expansion
    • DFRobot DHT11 Temperature and Humidity Sensor
    • 2x Servo
    • LinkSprite camera
    • PIR Motion Sensor Detector 
    Il modulo gprs l'ho comprato su ebay siccome non mi serve qualcosa di sicuro e perfomante.

    Il linguaggio che verrà utilizzato sarà C# e la programmazione verrà fatta in OGG.


    The project consist to make a motorized webcam that it will be managed by gprs module and possibly to implement a motion sensor and temph sensor.

    The items chosen there are:
    • Fez Domino
    • DFRobot I / O Expansion
    • DFRobot DHT11 Temperature and Humidity Sensor
    • 2x Servo
    • LinkSprite camera
    • PIR Motion Sensor Detector 
    The gprs module I bought by ebay because I don't need something strong and performance.

    The language will be used is c# and I will programmer in OGG.