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21 Aug 2007

vga2scart2.jpg

 This circuit allows you to connect your VGA card to TV using a few common parts. According to author (Pontus Frössander):

“The circuit basically XORs together your horizontal and vertical synchronization signals to create a composite sync output, and adjusts output for input polarity. By setting the resolution and timings on your VGA card correctly, it is possible to generate a signal that the TV will accept. This circuit works for both PAL and NTSC signals, just adjust the timings in software accordingly.”

VGA to SCART RGB converter – [Link]

21 Aug 2007

usb_lcdtop.jpg

Adding a character LCD to your PC is a very popular DIY project among electronic hobbyists. 

It adds a new level of excitment to your pc moddifications. The most common interface used is LPT port or the less common RS-232. Here at electronics-lab we have intoduced an article named “Build your own printer cable LCD Display” that interfaces a Hitachi HD44780 based LCD module to your LPT port. The project we are talking about moves a step further as it uses USB port to interface existing LCDs. According to author (Pontus Frössander):

“The circuit interfaces to a standard HD44780 compatible LCD and emulates the CrystalFontz serial protocol over a virtual COM port created by the FTDI chip. This enables you to use already existing software to speak to the LCD, for example the popular program LCD Smartie. “

USB interface for parallel LCDs – [Link]

20 Aug 2007

motor_h-bridge.jpg

 Using this circuit you can control a DC motor to spin clockwise and counterclockwise using only one switch (one control signal). H-bridges are available as integrated circuits or can be built from separate components. This is the simplest circuit using discrete components you can use to achieve this function. In other words, this circuit allows you to reverse the spinning direction of a motor in one touch.

That’s the simlpest implementation using only relays not transistors as commonly used on H-Bridge circuits.

A simple relay H-bridge to control motor – [Link]

More information about H-Bridge:

20 Aug 2007

led_mood_lamp.gif

 That’s an amazing high power RGB led mood light project. This high power led mood light is based on PIC16F628 and the ability of this mcu to produce PWM pulses. Varying pulse width we can produce millions of color combinations using only the three basic colors. So only one RGB (Red-Green-Blue) led is capable producing a rainbow of fading colors.

In this page we will introduce a great project designed by Toon Beerten. His project named “DIY Led Mood Lamp” can become a very interesting add-on for your room that’s absolutely sure it will impress everyone. As you can see on the photos, we talk about a color fading lamp, that looks amazing!

 High Power RGB LED mood Lamp – [Link]


18 Aug 2007

Electronics-Lab.com Blog screenshoot

 That’s true!! Electronics-Lab.com has setup a new blog – The electronic hobbyist news blog – to bring you all the fresh content around the field of electronics. We will keep a high quality on the posts of this blog to maintain a reliable and informative source for all of you.

So i personally welcome you to …

…  the NEW Electronics-Lab.com blog. Today is the launch date of this new blog, dedicated to every electronics enthousiast out there. In this blog we will try to keep you informed about all the news and ideas come up every day around the world in the field of interest of electronics hobbyists, so STAY TUNED.



 
 
 

 

 

 

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