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PIC IR/ RF Remote Control - This is a general purpose remote control project with using programmable PIC microcontrollers (PIC16F628, PIC16F630, PIC16F684). Schematics are shown for using infrared (IR) or radio (RF) media. If you are not familiar with microcontroller programming, you can use fixed encoder and decoder integrated circuits instead. Well-known such IC-s are Holtek HT-12D, HT-12E and Motorola MC145026, MC145027, MC145028.
PIC Light Chaser - The circuit this month is a simple 8 light chaser built around a PIC. This will demonstrate how easy it is to program a PIC and to utilize it in a circuit. The circuit works as follows. When power is supplied to the circuit the PIC resets and starts. __ Designed by Randy Linscott
PIC Micro Multiple Servo Motor Interface Using a modified version of the last program, we can control as many servomotors as we have I/O lines on port B. In the next listing, we will control two servos in the same manner as we controlled a single servo in the previous program. The circuit is shown in figure 4 (below).
__ Contact: Images SI, Inc
PIC MicroController Servo Motor Interface - In our first program , we will simply sweep the servomotor from CCW to CW and then sweep back. The program will be kept simple as to demonstrate the priniciples of controlling a servo with a the PIC Basic language. The schematic can be seen in figure 2 (below).
__ Contact: Images SI, Inc
PIC plots pixels sans controller - 02/16/98 EDN-Design Ideas It is sometimes desirable to display the output of a PIC µC graphically, rather than numerically. However, the operation increases system complexity and expense. In addition to the LCD itself, you usually need a graphics controller and at least 1 kbyte of RAM. However, you can obtain a satisfactory plot(Figure 1) Design by Daryl Christopher, Juniata College, and Tom Fisher, Inexpensive Systems, Huntingdon, PA
PIC Projects: Digital Temperature Controller - Digital temperature controller is an essential instrument in the field of electronics, instrumentation and control automation for measuring and controlling temperatures. It can be used as much at homes as in...__ Electronics Projects for You
PIC Remote Control - 5 channels are controlled via RF receiver / RF transmitter and PIC12C508 microcontroller.
PIC Remote Control - 4 / 8 channel RF / IR remote control based on PIC16F628 and PIC16F630 __ Designed by Peter Jakab
PIC12c508 Night Light Saver - Build a device that turn on and off a night light automatically. Save Energy, No EMI, No Battery, Built-in Lamp Fixture, and Peak Shaving. __ Designed by Wichit Sirichote
PIC16c505 IR/Wireless Remote Control - Control up to 8 devices by this easy constructable remote control. It can work as a radio or infrared remote control, depending on the components. Each device output can be configured to be momentary (turned on while you press the button) or latched. Latched outputs can be toggled on/off by one button per channel, or turned on and off by two buttons per channel. __ Designed by Peter Jakab
PIC16C84/F84 door entry dual code systE - M - PIC16 Door code entry system __ Designed by Thomas Scherrer OZ2CPU
PIC16F84 LED Chaser - There are several projects on this page. Please scroll down to find the LED Chaser. __ Designed by Jason KE4NYV from Roanoke, Virginia
PIC16f84 Miniature Real Time Controller - Build a simple real-time controller with PIC16F84 running at low power X-tal 32, 768Hz. Daily scheduler for 6-channel resided in 64-byte EEPROM can easily be pre-programmed using Nigel PicProg __ Designed by Wichit Sirichote
PIC16F84 RF remote Controller - With a handful of inexpensive components, a little creativity, and the power of PicBasic, you can build some pretty outstanding robotics creations as Rob Arnold proves with his Ruf-Bot project. __ Designed by Rob Arnold
PIC16F873 Light Controller - On these pages, I will introduce the Ultrasonic Range Meter with PIC16F873. As for the range meter which doesn't use PIC, refer to "Ultrasonic Range Meter". I created the PCB pattern for this circuit using EAGLE CAD. With this circuit, the following features of PIC16F873 are used. __ Designed by Seiichi Inoue
PID Temperature Controller - What's a PID controller? PID stands for "proportional integral differential" and relates to a process which seeks to continuously correct the error between a measured variable and a desired setting by calculating an appropriate correction process. In practice, it can largely avoid the large overshoots and undershoots that occur in simple temerature control systems.__ SiliconChip
Pinewood Derby Finish Line Detector - The following is an electronic schematic and parts list for the items needed to construct an infrared detector for the finish line of a Pinewood Derby racetrack utilizing an external power supply and the parallel port of an IBM compatible computer of at least 486/33Mhz running DOS 3.1 or better. Also included is a narration concerning the construction of the detector as well as the BASIC code required to operate the detector. __ Designed by Pack 471
PIR to IR remote control - After the third attack on my car in 6 weeks, loosing 35 litres of fuel and generally having my day stuffed upI got really pissed off and embarked on the EKM-1 surveillance camera system. Next time I want to get the act on video. My first thought was to keep it simple and use a PIR (passive Infra-red) motion detector to set off an alarm in my bedroomthen I would manually start my VCR and record video from a low-light camera __ Designed by Eddie Matejowsky
Plane Motor Controller with High-Rate ESC, BEC & Brake - This electronic speed control (ESC) for brushed motors combines the features of two of my earlier designs. One was a high-rate 30A ESC with a brake, and the other a high-rate 12A ESC with a BEC (receiver battery eliminator circuit). __ Designed by Stefan Vorketter
PLL implements FPGA-based SDRAM controller - EDN-Design Ideas March 26, 1998 [ NOTE
: File has multiple design, scroll for this one.] As FPGA capabilities increase and time to market decreases, FPGAs gain more acceptance for implementing both data and control paths. Thus, they find wide use as controllers and datapath glue logic for fast-page DRAMs. Design by Eddy Debaere, Barco Graphics, Ghent, Belgium
PLL-based converter controls light source - EDN-Design Ideas July 2, 1998 [ NOTE
: File has multiple design, scroll for this one.] Using the circuit in Figure 1, you can digitally control the light intensity of a lamp. The control loop is based on a PLL, in which the VCO comprises a light-to-frequency converter (TSL220) coupled to a light source that derives its drive from a switching regulator (L4970A). The output of the phase/frequency comparator (4046) serves as the control voltage for the switching regulator. The control voltage is proportional to the frequency error between the reference frequency (fREF) and the signal frequency (fIN) coming from the light-to-frequency converter. Design by Masso Gottardi, ITC-IRST, Trento, Italy
Pocket LED Light - An LED pocket light operates with only one cell of battery. __ Designed by The Electronic Lives Manufacturing-presented Chan
Pocket Lightning Detector - Schematic + Info + pictures __ Designed by Lennie Zink
Pocket stroboscope - This circuit is a mini storoscope which you can make so small that it can fit into your pocket. The circuit is not very powerful, but is works out of two small 1.5V batteries for an hour constantly and maximum flash rate. The flash rate is variable from zero to about 10 Hz. Quite nice small device to have with you in parties to gain attention __ Designed by Tomi Engdahl
Pocket white-LED torch is power efficient - 04/30/13 EDN-Design Ideas This single white-LED torch can be housed in an empty glue-stick tube and has a long rechargeable-battery life. Design by Raju Baddi
Police Lights - These two circuits flash the left LEDs 3 times then the right LEDs 3 times, then repeats. The only difference is the choice of chips. __ 555-Timer
Porch Light Slave Switch - This circuit turns on the porch light when a passive IR security light is activated. __ Designed by Andrew R. Morris
Porch Light Switch - This circuit will activate a relay when light falls to a preset level. Light level can be adjusted with VR1 and the relay contacts may be used to operate an external light or buzzer. __ Designed by Andy Collison
Portable Lamp Flasher - Here is a portable, high-power incandescent electric lamp flasher. It is basically a dual flasher (alternating blinker) that can handle two separate 230V AC loads (bulbs L1 and L2). The circuit is...__ Electronics Projects for You
Portable Signal Wand - Flashing lights have varied applications. For example, travelers can use these as warning beacons on highways to catch the attention of the public in case of an emergency. Described here is...__ Electronics Projects for You
Position Detectors provide Motor-control logic - 05/24/01 EDN-Design Ideas In the circuit of Figure 1 , assume that a brush-type dc motor must drive a load back and forth between two endpoints on a lead screw. Optical sensors determine end of travel, and an SPDT switch selects to which end to send the load. The sensors themselves supply all the necessary directional logic, and a TRIAC powers the motor with the necessary polarity of half-wave pulses from the 13. PDF have several circuits, scroll for this one Design by Steve Pomeroy and Russell Hedges, Elgar Corp, San Diego, CA
Pot Controlled Variable LED Intensity Circuit - The circuit below uses power from four rechargeable AA NiMH
cells to drive 3 white LEDs. A potentiometer varies the duty cycle of a pulse width modulator circuit to vary the intensity of the LEDs from 0% to 100%. The beauty of the circuit is that when the. . . Circuit by Dave Johnson P.E.-September, 2009
Power 220V Flashing LED - AC mains operated single LED flasher circuit, built using the popular CMOS
timer chip TLC555 is shown below. The whole circuit is powered directly by the grid supply of 230VAC through a capacitive potential divider and associated components. This minuscule Power LED Flashing circuit can be easily fit inside a very small __ Designed by T.K. Hareendran
Power Amp-Single Polarity Power Supply-Using Model 423 - No description, just schematicOpAmps Lab Inc is the manufactor ofAmplifiers (Video / Audio / Distribution / Microphone / Equalization / Line / VCA / Power), Switchers (Routing / Assign / Matrix), Mult (Press) (Network-Feed) Boxes, Audio Transformers, Oscillators, Power-Supplies, Custom Sub-Systems. __ Application OpAmps Lab Inc.
Power Backup using Supercapacitors & Optional Keep-Alive Cell - The LTC4415 contains two monolithic PowerPath ideal diodes, each capable of supplying up to 4A with typical forward conduction resistance of 50mΩ. The diode voltage drops are regulated to 15mV during forward conduction at low currents, extending the power supply operating range and ensuring no oscillations during supply switchover. __ Linear Technology/Analog Devices App Note, Dec 5th 2011
Power Flasher (PAGE 113) - Suitable for alerting purposes. Drives 12V Car bulbs __ Contact: Flavio Dellepiane, fladello @ tin.it
Power Gain Stages for Monolithic Amplifiers - Linear Technology AN18 __ Designed by Jim WilliamsMar 1st, 1986
Power Line Alarm - This circuit will activate a beeper alarm whenever the AC line voltage is less than 100vac.. . . Circuit by David A. Johnson P.E.-July, 2006
Power Off Time Delay Relay - The two circuits below illustrate opening a relay contact a short time after the ignition or ligh switch is turned off. The capacitor is charged and the relay is closed when the voltage at the diode anode rises to +12 volts. The circuit on the left is a common collector or emitter follower and has the advantage of one less part since a resistor is not needed in series with the transistor base. However the voltage across the relay coil will be two diode drops less than the supply voltage, or about 11 volts for a 12.5 volt input. __ Designed by Bill Bowden
Power Output Stage Automatic Bias System Control IC LT1166 - DN126 Design Notes__ Linear Technology/Analog Devices
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