List of about 100 electronic circuits I build since when I was 12 years old. Also check my recent projects.
 |
7-segment display combinator circuit. It shows numbers 0 to 9 in a 7-segments display when connecting the wire to the tabs 0 to 9. June 1998 (I was 12 years old) |
 |
AM radio receiver October 1999 |
 |
Flashing lamp with a single transistor October 1999 |
 |
Alternate flashing of two lamps October 1999 |
 |
Four lamps flashing in sequence November 1999 |
 |
LED traffic light November 1999 |
 |
Automatic gate control, manage the motor and limit switches with a relay logic. Made in occasion of the contest “half million lire for an idea” during the science festival in Cagliari. I won the second price, I was 14 years old. November 2000 |
 |
Generator of long electric sparks. January 2001 |
 |
2x10W amplifier with a TDA2003 June 2002 |
 |
Power supply, 1.2V to 15V, 1A – with LM317 December 2002 |
 |
10W aplifier, 12V 4-8 ohm with TDA2002 (4 uguali) February 2003 |
 |
Dark activated switch (2 identical) March 2003 |
 |
0-20 mA signal generator and 24 Vdc power supply April 2003 |
 |
Automatic gate control for a car parking with counting the number of available slots. May/June 2003 |
 |
Mini infrared barrier (with the help of Vittorio Crapella) July 2003 |
 |
20W amplifier, 12V 4 ohm, with TDA2005
August 2003 |
 |
PWM regulator (prototype) October 2003 |
 |
Incandescent lamp regulator October 2003 |
 |
Board to control the lamp intensity of the Christmas crib (ITIS G. Marconi) December 2003 |
 |
Control system of the Christmas crib with PLC. December 2003 |
 |
Power supply 12Vcc, 12Vac 4A December 2003 |
 |
PIC programmer (Minipippo) December 2003 |
 |
DC motor (demonstrative) January 2004 |
 |
“Supercar effect” with 8 LEDs and a microcontroller PIC16F84 February 2004
|
 |
Bromograph to make printed circuit boards February-March 2004 |
 |
Strobo flash light for discoteque March 2004 |
 |
Use of a PLC display with a microcontroller programmed in assembler. April 2004 |
 |
Disco strobo flash (housing is al old ATX power supply case). May 2004 |
 |
20W with TDA2005 (same as the one made in August 2003) May 2004 |
|
Psychedelic lamps controller (prototype) May 2004 |
|
|
|
AM transmitter with 1 MHz ttl oscillator June 2004 |
|
|
Audio signal from telephone line June 2004 |
 |
Control of a unipolar stepper motor with a PIC micro June 2004 |
|
|
June 2004 |
|
|
Telephone line state indicator. July 2004 |
 |
Control of a unipolar stepper motor with a PIC micro July 2004 |
 |
AM receiver with variable inductance tuner. Detector diode is OA91 (thanks to Franco Bachetti IS0VSU for giving me the kit) August 2004 |
 |
Psychedelic lamps controller (finished after many trial and improvements to obtain the desired light effect) August 2004 |
 |
Lamps holders of the psychedelic lamps. August 2004 |
 |
Count down, with a PIC and a 7 segment display. August 2004 |
 |
Siren for anti theft (intalled in my scooter). components , copper traces August 2004 |
 |
Pre-amplified microphone August 2004 |
 |
PWM Regulator August 2004 |
 |
Prototype odometer for my scooter August 2004 (only hardware) |
 |
Universal PIC and i2c eeprom programmer November 2004 |
 |
Electric installation for a 35 kW biomass boiler. November 2004 |
|
Lamps of a Chrismas crib controlled with a PIC Micro. December 2004 |
|
 |
Digital odometer for my scooter, with a Microchip PIC (software not complete). December 2004 |
 |
February 2005 |
|
|
Centralized power supply with backup battery. February 2005 |
 |
Pixie2 CW rtx QRP 1W. March 2005 |
 |
Ni-Mh battery charger. April 2005 |
 |
Audio speaker box with amplifier. May 2005 |
 |
Adapter to connect a telegraphic key to the computer. May 2005 |
 |
Irrigation timer August 2005 |
 |
Application of a washing machine electric motor to a grape mill. October 2005 |
|
|
Electric installation of biomass and gasoline boilers for a group of four apartments. December 2005 |
|
|
Tone generator, to exercise in morse code transmission. December 2005 |
 |
Tone generator, to exercise in morse code transmission. January 2006 |
 |
GSM radio bridge (900-1800MHz) using home made antennas and broadband amplifiers (meant for satellite signal) in cascade. January 2006 |
 |
Solar tracker model, functional. February 2006 |
 |
Electromagnetic gun. Let’s demonstrate the Lentz’s law with some fun.
May 2006 |
 |
Small wind turbine. June 2006 |
 |
“beacon” for the fox-hunt. September 2006 |
 |
1.45 kW photovoltaic plant, grid connected, with solar tracker. Video. November 2006 – January 2007 |
 |
Smart TV. A computer in the living-room allows a normal TV to read DVDs and surf the internet. December 2006 |
 |
LPD Alan 507 antenna modification. February 2007 |
 |
Dual power supply, 1 A. -12V, +12, +5. March 2007 |
 |
Solar tracking controller, version 2 March-April 2007 |
 |
Speakers on the bicycle. March-April 2007 |
 |
Tall bike – welding two bike frames on top of each other. April 2007 |
 |
Trailer for bicycle. June 2007 |
 |
AM radio receiver, without battery. The energy for the headphones comes from the antenna. The tuning is made with a variable capacitor made with aluminium foil and two plastic yoghurt pots. July 2007 |
 |
Tandem. July 2007 |
 |
One axis solar tracker controller. September 2007 |
 |
One axis solar tracker controller. November 2007 |
 |
Model of a passive tilt solar tracker, controlled with a uC. One motor, two axis movement. See it in action. January 2008 |
|
One axis solar tracker controller. January 2008 |
 |
Two axis solar tracking controller. January 2008 |
 |
Savonius wind turbine, on the roof of my parent’s house. Too much vibrations transmitted to the structure made enough noise to led my mum to convince me to remove the turbine, after a few days of successful operation. January/February 2008 |
 |
Differential thermostat for solar thermal panels. February 2008 |
 |
Two axis solar tracker control box. February 2008 |
 |
Refurbishment of small wind turbine. February 2008 |
 |
Solar tracker, AC version (to control an AC motor, single phase or three phase) March 2008 |
 |
Bromograph II. In an old scanner enclosure.
March 2008 |
 |
10 solar tracker controllers “Margherita AC”
April 2008 |
 |
One axis solar tracker kit. May 2008 |
 |
Specchio inseguitore solare (si orienta in modo da riflettere il sole sempre in cucina)May – June 2008 |
 |
Two axis solar tracker. June 2008 |
 |
Refurbishment of an old bicycle. June 2008 (March to June) |
 |
Two axis solar tracker 12V (for mirror, heliostat)
June 2008 |
 |
Parallel port interface to test programs in Just Basic. July 2008 |
 |
Manual 3 axis milling machine. August 2008 |
 |
Savonius wind turbine. August 2008 |
 |
FM transmitter FM 88-108 MHz. September 2008 |
 |
Solar tracking controller “Margherita 12”, one/two axis. October 2008 |
 |
Modification of an antenna, from 27 MHz to 14 MHz. October 2008 |
 |
Stepper motor driver with L297-L298 December 2008 |
| Latest projects, click here |
