Sunday, August 05, 2012

Long Range Wireless Sensor

Arduino + Pmr446 + RTTY = Long Range Wireless Sensor

Description

This is a simple project for remoted sensors.

Components used:
Software Rx:

Step by step
  1. Prepare a new sketch for Arduino to read the sensor LM35DZ follow this tutorial
  2. Donwload&Configure Arduino IDE with RTTY Library
  3. The library RTTY is configured to be used with the components RADIOMETRIX TX2 ... this library can not be used out of the box ... you must change to make it generate audio tones (contact me if you have problems)
  4. Modify the sketch to send sensor data via RTTY
  5. Connect components to arduino as shown in the diagrams


Demo Sketch

  1. #include <RTTY.h>
  2.  
  3. float tempC;
  4. int tempPin = 0;
  5. char buffer [50];
  6.  
  7. void setup()
  8. {
  9.   /*
  10.     My Library RTTY accepts
  11.     a single parameter in the
  12.     constructor (output audio tone)
  13.   */
  14.   RTTY.attach(8);
  15. }
  16.  
  17. void loop()
  18. {
  19.   tempC = analogRead(tempPin);
  20.   tempC = (5.0 * tempC * 100.0)/1024.0;
  21.  
  22.   RTTY.tx(" Remote Temperature Sensor ");
  23.   dtostrf(tempC, 2, 2, buffer);
  24.   RTTY.tx(buffer);
  25.   RTTY.tx("c\n");
  26. }



Diagram

Arduino + Pmr + RTTY = Remote Temperature Sensor


Photos

Remote Temperatore Sensor
Remote Temperatore Sensor
Remote Temperatore Sensor
Remote Temperatore Sensor
Remote Temperatore Sensor

Video receiving data

Thursday, August 02, 2012

Arduino Band (Funny)




A Moments of madness! :)
For my girlfriend Francesca <3 , happy birthday to you :)

Photos



Arduino Band

Arduino Band

Arduino Band

Arduino Band

Arduino Band

‎"Quando faccio una Hack e mi viene una meza schifezza la converto in Sound che qualcosa di buono sicuro ci esce. Poi siccome la gente non capisce un cazzo vi dirà che è bella, è artistica, è riuscita a congelare la vera anima del momento. E vi chiamerà a Suonare ia matrimoni." Ludwig van Beethoven in "Gente che ascolta i tienielli!" (1826)

Wednesday, August 01, 2012

Raspberry-Pi Micro Webcam

I do not have any Raspberry-Pi, and I hope to get it as soon as possible :). In my free time I'm looking for interesting projects.

Currently, one of my main project is about sending jpeg via RTTY (over Fm radio).
I order to keep low the price of the prototype, I'm looking for a micro webcam to capture images jpeg.

Finally I found one that is right for me!
808 Car Key Micro Camera ~10$



There are various versions, and a reviewer (#3) recommend it
Ebay link 

If you want to know more, go to this link: 808 Car Keys Micro Camera
Here some tips to make sure that the camera is recognized as a webcam.
http://www.chucklohr.com/808/C3/index.html#C3LinuxTips

I didn't checked if Rasbian contains gspca_spca1528 v4l2 kernel module yet!
I hope that it works on Raspberry-Pi :)