This project was realized to be used as capacitive keyboard hidden in the monitor.

IperSMS allows to receive SMS in an automatic, professional and economic way. You'll just need to connect it to the PC and through a serial communication management program, like Hyperterminal, you will be able to receive the SMS on your PC in order then to elaborate and/or store them in your preferred application through the classics copy/paste.

With a single key it can be managed up to 8 systems and with the multizone version the zones of the system can be split up directly from the key hole!

The electronic key IperKEY is a sophisticated security system that is born by establishing the right compromise between installation facility and guarantee of emergency for the final customer.

IperCODE is a didactic project, with which it is possible to build a remote control acquisition system, based on the rolling code and to have the possibility to transmit the received code on RS232 serial port, to visualize it on the 16X2 display or to reproduce it.

Well, today we are gonna give this solar powered lamp a unique voice of its own, on this week’s weekend project.

What is a circuit breaker? When do I need an ac power line filter or a phone line filter; How do I design a noise filter; Can I build a homemade surge protection?
The following circuit protection can provide several protections you can experiment yourself at home.

DIY: soldering BGA ICs on PCB in your garage/lab without professional facilities. It is a headache to have a BGA IC mounted on the PCB if it is a small project. Today I want to share something about soldering.

KiCAD a free and open source EDA tool was designed and written by Jean-Pierre Charras, a researcher at "Laboratoire des Images et des Signaux".
The EDA tools are usually under commercial licenses and very expensive. That increases the investment of electronics engineering and brings many other issues. One of my friends used the hacked EDA tools for his projects. Unfortunately, one of the tools was infected by CIH virus and all of his projects on the hard disk were in vain on that big day. It is important to get free (or low cost) EDA tools for electronics engineering.

The application is a disk loader in optical disk driver. This software module controls the motor operation according to the external interrupt from a position sensor. This module works fine independently, but the motor can not stop at the designated position occasionally after integration with other modules.
The engineer checked the code for the motor driver. This code is very simple, which writes port register with H/L values.