Author Archives: Alex

Resistors 101

Posted on 26/01/2012 by Alex

A friend asked me to introduce electronic components in a simple way,  not teaching electronics in depth, but giving just enough information to “play”. This makes sense: with a standalone Arduino board , You can make the onboard Led on … Continue reading →

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Arduino Push Button Automator

Posted on 04/01/2012 by Alex

Some days ago a friend asked me how to build a device that periodically presses a push button. After some tought I came up with a simple solution using an Arduino and a servo motor.

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Arduino Long Time Hardware Watchdog

Posted on 22/12/2011 by Alex

There are times You need to be sure your application is always up and running, so You need a tool that resets the board if something goes wrong (crashes, infinite loops … and so on). This kind of tool is … Continue reading →

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GSM Thermostat – Software (update)

Posted on 19/12/2011 by Alex

After some intensive test of the GSM thermostat, I’ve decided to add new features and change some low level interactions with the GSM Modem.

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GSM Thermostat – Software

Posted on 10/12/2011 by Alex

This is my first “big” Arduino project so I decided to split the application into modules (read C++ classes), hoping to reuse these modules in future projects. So You will find a TempSensor_AD22100.cpp, a LatchedRelais.cpp, a SerialDebug.cpp, a ModemGSM.cpp and some other. The Arduino … Continue reading →

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GSM Thermostat – Hardware

Posted on 30/11/2011 by Alex

The GSM Shield After some Web browsing we found a GSM Dualband Shield from Libellium (now outperformed by quadband device) that worked fine for this project even if It had some quirks that I had to solve via software.  Libellium links the Shield Schematic and a tutorial that … Continue reading →

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GSM Thermostat – Intro

Posted on 30/11/2011 by Alex

I’ve always been curious about GSM modems, but I’ve never get in touch with one until a friend asked me to build a Thermostat for his house in the mountains. The device should have been be enable to report power … Continue reading →

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