Here you will find electronics circuits, computing issues and slot circuits

You will find in electronics a set of relatively straightforward circuits that you can download. The printed circuit is on one side and the printed circuit board is on the other side. In most of electronic connections the design of both printed circuits are included; however in some old electronic designs the circuits were made “by hand” and no printed circuit board was shown. If so, you’ll have to do it yourself. More importantly, every electronic circuit is designed through a software known as Eagle. You have to pay for that software, but there is a free version, although it doesn’t allow you to design printed circuit boards bigger than 100x80 mm.

Linux, Windows and Mac versions of that software are available.
Every electronic circuit found here is designed through the free version of Eagle. It enables you to modify these designs at ease.

We are designing new circuits with microcontroller pictures. The first one is a small digital clock. In the digital clock link on pic 16F84 more information is available.

Another of our ready-made electronic connections is the on-off switch button (pic 12F675) and the sequential on-off switch fitted with three relays and one switch button (microcontroller pic 12F675) . The latter is a digital voltmeter (pic 16F873A) visualized through a 2X16 lcd and a clock calendar (pic 16F873A). We have also created a useful in-out thermometer visualized through a 2X16 lcd display.

Every pic circuit features the .hex code ready to be recorded in the microcontroller for immediate use. If you don´t know how to record the software in the microcontrollers, here you have a circuit to do it.
All the microcontroller circuits have been successfully tested. We will focus our attention soon on the microcontrollers, showing new and straightforward circuits.

Every circuit is under creative common license. We have worked out several tutorials on electronics to be gradually developed.

The tutorials are also included in the present in the computing section. They are useful and straightforward. For example, you yourself can assemble a computer following our practical guide. You will learn how much electricity does your computer use and its cost-in-use.

For slot cars, we have set up racing circuits for two and four cars intended to be assembled.
They have been designed through software. If you click on the racing circuit, you’ll find a page featuring all the components you need (curves, straights…).
In addition, you can see pictures of slot cars.
Enjoy!

Electronics

New electronics circuits

-Countdown 7 segment displays
-Countdown with lcd 2x16 visualisation
-Twilight switch
-Alarm clock with thermometer
-Clock calendar with pic 16F873A
-Digital voltmeter with 16F873A pic and display lcd 2x16
-In/out thermometer
-Full wave precision rectifier
-10 amp power supply
-On/off_sequence_of_three_relays_with_push_button
-On/off with push button 12F675 pic
-Digital clock with 16F84A pic
-Phono preamplifier
-Datasheet circuits
-Current clamp
-A digital voltmeter
-Light dimmer

How to make printed circuit boards

-How to make printed circuit boards, it´s easy!

Electronics tutorials

-Oscilloscope PC
-How to make a resistive divider
-Eagle ground plane tutorial
-Electromagnetic spectrum
-Electronic color code

Computing

-How to build a computer
-How to turn on ATX power supply
-Computer startup sound
-How much electricity does a computer use

Scalextric

-Scalextric circuits for two and four cars
-Scalextric car photos

Coming soon

-Microcontroller voltmeter ammeter for power supply
-Current clamp