In this section, I will describe some small electronic projects. Even if most of the circuits presented here are relatively simple, I do not think it is a good place to start for an absolute beginner. Very often, I just give the schematics, the source code if a microcontroller is used and a few words about the behavior of the circuit. I use to savage components from old boards and so I leave to the reader the task of choosing the absolute best devices for the circuit he is fabricating (which are not always the same I adopted). I am acquainted with CAD programs such as Eagle and Altium Designer, but for my hobby circuits I am more interested in the circuit itself than in the nice PCB on the screen of a computer. I use very often breadboards and I give the handwritten schematics. This changed a little bit since I wrote FidoCadJ, which allows me to draw schematics very fast. I am eager to discuss about improvements, corrections and suggestions on my circuits, or to see photos of your circuits.
DisclaimerI can not be considered as responsible in any way for the damages qui could result from a misbehaviour of the circuits presented here. In particular, the reader MUST take an extreme care of the circuits powered directly by the mains, where the high voltage can be very dangerous. In any case, all the security rules imposed by the laws must be respected carefully.
Another important point is that the circuits described in this page have been put together between 2004 and today. The state of the art and the techniques available have evolved. Some choices that were reasonable in 2005 may not be the ones I would do today.
Projects, software and circuits
Articles on ElectroYou
In the last years, I participated quite frequently to the very nice ElectroYou portal. The level of the discussions and of the skills of the participants are impressive. This is due thanks to the site admin and webmaster, who honoured me by choosing FidoCadJ as the standard system for exchanging drawings and schematics in the discussions and in the articles. Here are some of the articles I wrote for this website. The images have been provided by Zeno Martini, ElectroYou admin.
My little lab
I started being interested in electronics in 1989, but only in 2004 I decided to have a little electronics laboratory in my home. This picture shows it as it appeared in 2008.
- December 2022, 29 - Added ElectroYou article Misurare ESR di condensatori. Added this page log.
- 2016 - Added article Playing with chaos. Added ElectroYou article Misure di distorsione in campo audio.
- 2015 - Added article PHONO RIAA vacuum tube preamplifier for MM cartridges. Updated article 55 W + 55 W Amplifier.
- 2013 - Added ElectroYou article Curve tracing: a journey among electronic devices.
- 2011 - Added article 55 W + 55 W Amplifier. Updated article Domande frequenti su FidoCadJ. Wrote ElectroYou article FidoCadJ and ElectroYou (in English). Wrote the ElectroYou article The mathematical symmetry of the differential pair.
- 2010 - Added ElectroYou article Disegnare circuiti con FidoCAD e FidoCadJ. Added ElectroYou article Domande frequenti su FidoCadJ.
- 2009 - Added article A 20 W compact fluorescent light inverter.
- 2008 - Added the FidoCadJ page. Added article A nixie clock, version 2.1. Added the picture of the lab.
- 2007 - Updated the PIC16F84 clock and the MIDI splitter. Added A nixie clock, version 1.0. Added the FidoReadJ applet. Added article An ESR four probes tester.
- 2005 - Added article Midi canal splitter based on a PIC16F876.
- 2004 - Added article A clock based on PIC16F84 and PCF8573, first and second part.