Programmable Clock Oscillator - PIC-Tock is a video clock using a PIC16C61.  In the tradition of Marv Newland's "Bambi Meets Godzilla", there is far too much ROM space spent on credits, which are smooth-scrolled horizontally on the bottom of the screen.   __ Designed by Eric Smith

Programmable Continuity Tester - Our go/no-go continuity tester giving you the ability to set minimum continuity.__ SiliconChip

Programmable Home Security Alarm System. Part 1. Schematic - Part 1.  In this project we design low cost high performance programmable home security system using few LDR's as an input sensors.  When above sensor (s) get triggered system may dial the user specified phone number  (using build-in DTMF generator) and activate the high power audio alarm and lights.  All the parameters of DTMF generator, audio alarm and light interface are programmed through the RS232 serial interface.

Programmable Home Security Alarm System. Part 2. Calibration & Testing - Part 2.  Schematic Calibration and Testing.   Once everything is assembled take following steps to calibrate the system, Remove IC1, IC2, IC3 and IC4 from the IC bases.  Apply 18V  (to 22V Max.) DC source to the power connector  (J3) .  Check the voltage

Programmable Interrupter/Timer Module - Handy little interrupter or timer device with fiber optic output.  Uses include controlling SSTCs and dangerous projects.

Programmable LED - Build a tiny circuit with a blinking LED.  The blinking sequence can be reprogrammed with a flashlight.  It detects changes in the lighting with a photocell, records the changes and plays them back.  A Programmable LED is easy to build and consists of 7 components only, including the battery __ Designed by Alexander Weber

Programmable PIC-Powered Timer - This PIC-based timer can be set for any period from one second up to 680 days and even    (theoretically) up to nearly 60 years.__ SiliconChip

Programmable Robot - Here's a great school project! This robot features full manoeuvrability, speed control, bump-and-respond logic and programmable sound and light sensing.  Turn it loose and watch it head for the light.__ SiliconChip

Programmable Time Delay Flash Trigger - Want to try your hand at 'stop motion' photography, where dynamic events such as a match bursting into flame, a drop splashing into a container of liquid or a projectile passing through a light globe, are captured at a crucial moment? Here's a project designed specifically for this kind of work.  It lets you trigger your electronic flash at the precise moment for a great picture.__ SiliconChip

Programmable Timer for Appliances - This programmable timer is useful for domestic, commercial as well as industrial applications.  It automatically turns the appliance on/off after a preset time.  The time period can be varied from 8...__ Electronics Projects for You

Programmers for Jupiter Card - The original hardware and software PonyProg  (which can be used for Jupiter Card programmer II) is presented in Lanconelli Open Systems.  A SmartMouse oscillator is used insted of original circuit to prevent problems, which are announced by error message "Device missing or unknown device  (-24) ".  The serial port of PC is used for connection.  This programmer is compatible with so-called "Harpune" programmer.  

Programming hardware & softrware for 14-bit FLASH PIC microcontrollers - This is the device I use for downloading code into 14-bit PIC microcontrollers with flash memory.  Like all my designs it is GPLed and may be freely copied.  It connects to the standard PC parallel port and requires a 12V DC supply.  The software runs under either Linux or DOS.
 

Programming Pulse Generators for Flash Memories - DN17 Design Notes__ Linear Technology/Analog Devices

Programs calculate 1% & ratio-resistor pairs - 12/16/05 EDN-Design Ideas - Computer programs determine the best values for an application Design by Carl Rutschow

Programss Atmel AVR microcontrollers - 30-Mar-00 EDN-Design Ideas - Atmel AVR mCs feature an enhanced RISC architecture that purportedly offer the highest MIPS-per-milliwatt capability in the 8-bit mC market.  Figure 1 shows an easy-to-build AVR mC-programming circuit that can program the 40-pin AT90S4414/8515, the 20-pin AT 90S1200/2313,PDF has many circuits, scroll to this one Design by Guo-Yin Xu, XuMicro, Houston, TX

Protoboards: the Easy Way Into Electronics - Use a protoboard to build a light chaser.__ SiliconChip

Protoboards: the Easy Way Into Electronics, Pt.4 - Fun with comparators: this month we play with the LM393 "bog-standard" dual comparator.__ SiliconChip

Protoboards:The Easy Into Electronics - More fun with comparators: making a window comparator.__ SiliconChip

Protoboards:The easy way into Electronics Pt.3 - More circuit boards based on the 555 timer and how to use the 555 as a audio amplifier.__ SiliconChip

Prototype Board-Atmel 89C2051 - This single sided proto board provides an economical solution for developing and testing the projects around Atmel 20 pin series u-controllers  (89Cx051 & AVR)  __ Designed by M Asim Khan    asimkhan @ sat.net.pk

Provide Watchdog for Microcontrollers - 12/26/02  EDN-Design Ideas - The watchdog circuit in Figure 1 uses a single NAND Schmitt-trigger IC.  The circuit iscost-effective than dedicated, commercially available watchdog ICs.  The circuit generates an active-high reset signal upon power-up and remains i Design by VM Holla, Bangalore, India

Provides 4- to 20-mA loop for microcontrollers - 05/27/04  EDN-Design Ideas - The 4- to 20-mA current loop is ubiquitous in the world of controls in manufacturing plants.  Discrete logic, microprocessors, and microcontrollers easily cover the digital portions of control schemes, such as limit switches, pushbuttons, and signal lights.  Interfacing a 4- to 20-mA output to a rudimentary microcontroller can be problematic Design by Robert Most, Dow Corning Corp, Auburn, MI

PS/2 Keylogger based on PIC12F675 - This is a keylogger based on PIC12F675 with 64K eeprom  (24LC512) .  When keylogger is connected between PC and keyboard it will record every keypress to memory.  By pressing a button recorded data will be sent back to PC so user can read it.  No need

PSoC microcontroller & LVDT measure position - 26-Oct-06 EDN-Design Ideas - Low-cost mixed-signal processor eliminates external analog circuitry Design by Sigurd Peterson, Sig3 Consulting, Aloha, OR

PWM Motor Control - PIC Project  This device acts as a variable speed control for the heater blower in a car.  It takes its power directly from the existing wiring and connects with just 2 wires.  It will also work for any 12 volt device up to 10 amps.   __ Designed by Luhan Monat - Mesa Arizona

PWM Motor Speed Control & the PICAXE Micro-Controller - The purpose of this demo is to introduce pulse-width-modulation  (pwm) and the use of the PICAXE 10-bit analog to digital converter to control the speed of a DC motor.  Pulse-width-modulation is used not only in say motor speed control, but in switching power supplies. __ Designed by Lewis Loflin

Pyranometer to Current Converter - Simple circuit that enables long cable wiring for pyranometer.  Built with TI rail-to-rail opamp, TLV2451.   __ Designed by Wichit Sirichote