555_timer.gif

555 Circuits

Basic circuits and information about this timer/oscillator. (11/6/2006)
Category: electronics circuits - Updated: 2009/07/23
555_timer1.gif

555 Circuits II

Some useful circuits using the LM555 IC. (11/26/2006)
Category: electronics circuits homemade - Updated: 2009/07/23
Using Excel for 7-segment characters

7-Segment ASCII character Set

A 127-character ASCII table for 7-segment LED or LCD displays. (August 13, 2009)
Category: microcontroller electronics scripts - Updated: 2009/08/13
ac_led.gif

AC LEDs.

Some useful Circuits with LEDs using the AC voltage. (5/28/2006)
Category: circuits electronics - Updated: 2009/07/23
RC circuit

ADC without ADC.

Here is a example how to read analog values without an Analog-to-Digital converter. Any Microchip PIC microcontroller without ADC can be used. (10/1/2006)
Category: microcontroller electronics howto - Updated: 2009/07/23
Air display schematic

Air Display.

A Noisemaker without noise. This is a simple display that uses the persistence of the vision [POV] to display messages in the air. (04/28/2004)
Category: microcontroller electronics homemade - Updated: 2009/07/23
n-650-1.jpg

Calculator Collection.

Here is my collection of old electronic calculators. Updated! (2/21/2007)
Category: discover electronics - Updated: 2009/07/23
small coke AM radio

Coke AM Radio

My "collectible" Coke AM radio. (11/23/2007)
Category: electronics interesting discover - Updated: 2009/07/23
diodes circuits - Dual voltage circuit with silicon diodes

Diode Circuits

A collection of simple but useful circuits made with silicon diodes. (6/14/2006)
Category: electronics circuits - Updated: 2009/07/23
emergency light

Emergency Light.

A simple circuit that activates a light when the power is out. A version with a lightbulb and another with white LED light included. (6/25/2006)
Category: electronics circuits light homemade - Updated: 2009/07/23
mini micro fm microphone transmitter circuit schematic

FM Microphone.

A micro-transmitter is so small and sensitive, it have only 8 easy-to-get parts and can be assembled in one hour. (6/3/2006)
Category: electronics circuits homemade - Updated: 2009/07/23
Four digits counter

Four Digit Counter

An Easy to build & multifunctional counter with 7-Segment Led Display. (5/06/2004)
Category: microcontroller projects electronics - Updated: 2010/01/19
ntx connector

Hacking the LEGO NXT

As the LEGO NXT is more complicated than the RCX; I had to do my own research to be able to hack the NXT connectors. Here is some interesting information about the signals from LEGO Mindstorms NXT. (8/2/2007)
Category: lego howto projects electronics robots - Updated: 2009/07/23
Pinout information of LCD Hitachi

Hitachi LCD Displays

LCD displays Hitachi Compatible, Data and Tips how to use the display.
Category: electronics circuits howto - Updated: 2009/07/23
Controling two leds

How To Control Multiple Leds

Multiplexing the I/O ports, you can control many leds using a few ports. Improved! (5/21/2006)
Category: microcontroller electronics howto - Updated: 2009/07/24

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