Transistor Tester Circuit

Logic Probe.
An useful and easy to build Logic Probe with Pulse injector. An schematic of a "digital version" is included.
Categories: electronics circuits homemade - Updated: 2009/10/03

7-Segment ASCII character Set

Resistors
How to read the color codes of the resistors and tips. (6/25/2006)
Categories: electronics circuits howto - Updated: 2009/08/02

Reset a frozen iPod.
It happens sometimes. With no apparently reason the iPod freezes and needs to be reset. Here is how to do that. (July 30, 2009)
Categories: howto audio electronics - Updated: 2009/07/29

Matrix Led Display.
A mini display using an array de 5x24 LEDs using Microchip PIC 16F628. (10/14/2004)
Categories: microcontroller diy electronics - Updated: 2009/07/25

INSIDER V1.0
In-Circuit debugger, created by E.E. Atanasios Melimopoulos. Updated Ver 1r1 (3/20/2009)
Categories: microcontroller hacks electronics from_readers - Updated: 2009/07/25

Strobe from Flash.
After using a disposable camera, you can build a strobe light (flashing light) with one simple modification. (6/2/2006)
Categories: electronics circuits light diy homemade - Updated: 2009/07/24

Displays: LED Matrix
Information for the Common Anode LED Matrix Display for SA04-11EWA, NFM-12882BEG-11, LEDM88RG (Updated 7/3/2006)
Categories: electronics circuits - Updated: 2009/07/24

Ni-Cad Battery Charger with LM317
A simple circuit used to charge old Ni-Cad cells for your electronic project. A solar version of the battery charger included. (3/3/2008)
Categories: electronics circuits homemade - Updated: 2009/07/24

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

Four Digit Counter
An Easy to build & multifunctional counter with 7-Segment Led Display. (5/06/2004)
Categories: microcontroller project electronics - Updated: 2009/07/24

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)
Categories: microcontroller electronics homemade - Updated: 2009/07/24

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)
Categories: microcontroller electronics howto - Updated: 2009/07/24

AC LEDs.
Some useful Circuits with LEDs using the AC voltage. (5/28/2006)
Categories: circuits electronics - Updated: 2009/07/24

Where to get parts.
Tips to get cheap parts and some parts distribuitors than sell good and inexpensive parts. (6/10/2006)
Categories: electronics circuits homemade - Updated: 2009/07/23

Transistor LED Flasher
A simple LED flasher that uses only two transistors, one capacitor and one resistor. This basic oscillator can have other simple applications. (6/10/2006)
Categories: electronics circuits light diy - Updated: 2009/07/23

Transformerless Power Supply.
Simple, low cost and easy to build power supply. Ideal for applications that doesn't requiere too much power. (5/28/2006)
Categories: electronics circuits homemade - Updated: 2009/07/23

Traffic Light.
A two-way traffic light using a CMOS 4017 and 555. To be used as toy only. (4/23/2006)
Categories: electronics circuits light - Updated: 2009/07/23

Tachometer Circuit.
A simple tachometer circuit using one NPN transistor. (12/04/2007)
Categories: electronics circuits automobile - Updated: 2009/07/23

- Mary's Creations.
- Publicidad Gráfica.
- Todito Yucatán
- Lucina Castillo's Art
- Conoce Amigos en Dalnet
- Narciso González' Alebrijes