Monthly Archives: July 2012

Reverse Engineering a PCB with GIMP pseudo X-ray

Posted on 2012/07/22 by celem

Years ago an orthodontist friend of mine, Neil, who was, by night, an electronic enthusiastic, used to reverse engineer printed circuit boards (PCB) by x-raying them in his office x-ray machine. In this way he could see simultaneously see both the PCB’s front … Continue reading →

Posted in Electronics, graphics, hardware, software | Tagged , , | 1 Comment

Wireless Remote Control PT2272 for Arduino

Posted on 2012/07/08 by celem

UPDATE: In addition to this post, there is also a more recent one titled “A Revisit of the PT2262 PT2272 with Arduino and r06a Receiver” If you find value in this post I believe that you will also like the … Continue reading →

Posted in Arduino, Electronics, security, wireless | Tagged , , , | 136 Comments

GSM Auto-Dial Alarm System

Posted on 2012/07/02 by celem

WARNING: Many, if not most of these alarm systems utilize 2G wireless which is no longer supported in the USA. Wherever in the world that you live, verify that the wireless carrier that you select supports the capability of the … Continue reading →

Posted in Electronics, security, SMS, wireless | Tagged , , , | Leave a comment