Categories
"Eagle" software ground plane tutorial
When we have an audio circuit, it is necessary, for the better shielding, and to avoid unnecessary noise, to create a ground plane.
2x10W amplifier
2x10W amplifier LA4280.
How to use the PC like an oscilloscope
With this simple tutorial we’ll construct an entrance to the computer to make it usable like an oscilloscope. We shall transform our PC into oscilloscope.
Digital volume control circuit
This circuit is a simple digital volume control. The integrated circuit DS1669 is the one that increases or reduces the volume by means of two push buttons.
Pic programmer
To program the microcontrollers we need hardware and software that can program our microcontroller model. We’ll first explain the hardware model with the circuit PICs programmer which we described at this web page, and then we’ll learn how to use special software to program the microcontrollers which works perfectly with the programmer we propose you.
On-off sensor circuit
This circuit can be set up in any computer you want to switch on/off by bringing your finger or any object close to the sensor.
Digital clock with pic
Digital clock with pic 16F84A.
How to make a voltage divider
A resistive divider is an electric circuit to which we join a voltage and so obtain its reduction.
Loudness circuit
With this circuit we recompense the human ear deficiency to perceive less sharp and less deep tones of those that a melody really has at low volume.
Twilight switch
Twilight switch with 12F629 microcontroller .
Power supply arrangements
That power supply may be configured, because depending on our voltage regulator, we’ll get more and less current at its output.
Contdown 7 segment displays
Based on the Countdown with LCD 2x16, we have made this variant of the countdown. The countdown circuit, or the backwards counting we shall describe, shows the visualisation of the backwards counting on four 7 segment displays.
Circuits
Circuits made with a professional design program
Tested
All circuits described have been tested
Tutorials
We extended the tutorials section periodically
Scalextric
Circuits of two and four cars made with design program
Photos
Scalextric photos