LCD GD-1505 AP

Technical information about this LCD display. (4/22/2006)
Category: electronics circuits - Updated: 2009/07/23
Lcd Clock with Calendar

LCD Clock/Calendar

LCD Display with Date and Time, 12hr format. (12/12/2004)
Category: microcontroller circuits diy - Updated: 2009/07/24
LED chaser with 16F84A

LED chaser using PIC 16F84A

A simple LED chaser with 8 LEDs and the PIC microcontroller 16F84A. Hex file and source code included. (August 10, 2009)
Category: microcontroller circuits - Updated: 2009/08/10
Two Transistor Led Flasher

LED Flasher Circuit - Flip Flop

The classic LED flasher flip-flop circuit. Two circuits using NPN and PNP transistors (August 2, 2009)
Category: circuits light - Updated: 2009/08/02
LED chaser 4017B 4017 NE555

LED Chaser.

A LED chaser using a CMOS 4017 and a 555. (5/28/2006)
Category: electronics circuits automobile light - Updated: 2009/07/23

Led Chaser II

Led Chaser Version 2, Improved. Use it as "Led chaser" or "Third Brake Light". (1/30/2005)
Category: microcontroller circuits automobile - Updated: 2009/07/24
Led Clock Schematic

Led Clock

12Hr Led clock using 16F84 or 16F628. Also, schematic to build a Jumbo clock is included. (6/05/2004)
16F84 version have a problem, pending to be fixed. Updated! (9/6/2006)
Category: microcontroller circuits diy - Updated: 2009/07/24
Simple Lie Detector.

Lie Detector

A simple and easy to make lie detector circuit. (August 3, 2009)
Category: circuits audio diy science - Updated: 2009/08/02
Logic probe easy to build homemade home made pulse injector

Logic Probe.

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

Mini Amplifier with LM386.

The LM386 is a low voltage audio power amplifier, simple and easy to build a mini amplifier with only a few components. (7/3/2006)
Category: electronics circuits homemade audio - Updated: 2009/07/23
ni-cad battery charger.

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)
Category: electronics circuits homemade - Updated: 2009/07/23
quartz clock

One Second Timebase.

Here are the instructions how to get one-second (1hz) pulses from a broken quartz clock. This is a precision timebase generator that can be used in any project that needs exactly one-second pulses. (6/11/2006) Updated!
Category: electronics circuits diy projects - Updated: 2014/03/02
Microcontroller PIC 16F505

PIC 16F505

Some information about the new Microchip PIC 16F505. (10/12/2006)
Category: microcontroller circuits - Updated: 2009/07/23
Microcontroller PIC microchip programmer. JDM compatible.

My PIC Programmer

An easy-to-build PIC programmer, based in the JDM. Uses the serial port. (10/24/2004)
Category: microcontroller circuits - Updated: 2009/07/23
jdm Pic Programmer

PIC Programmer sent by Fco. Arroyo.

Francisco Arroyo Garcia sent this schematic as an alternative to program MICROCHIP PICs. This programmer is a JDM-based and works fine to program the PIC 16F628A. (12/7/2006)
Category: microcontroller circuits - Updated: 2009/07/23

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