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Display Electronic Circuits or Electronic Schematics
Display Circuits:  #'s - C       D - I       J - N       O - T       U - Z

Last Updated:  10/18/2017 05:04:06 AM


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

Large 7-Segment Display Board -  a resizeable display from 40mm to 150mm! __ Contact: P. Townshend EduTek Ltd

LCD 2 USB -  LCD2USB is a open source/open hardware project.  The goal of LCD2USB is to connect HD44780 based text LCD displays to various PCs via USB.  LCD2USB was meant to be cheap and to be made of easily available parts.  It is therefore based on the Atmel AVR Mega8 CPU and does not require any difficult to obtain parts like separate USB controllers and the like.   __ Designed by Till Harbaum <Till @ Harbaum.org>

LCD 2x16 characters &  4x4 keypad assembly example -  Connect some 2x16 characters LCD display and 4x4 keypad with AVR microcontroller __ Designed by Jerry Meng

LCD Bias & Backup Supply Applications for the LT1316 Micropower DC/DC Converter -  DN166 Design Notes__ Linear Technology/Analog Devices

LCD clock based on AVR Attiny2313 -  The clock is working a 24 hour period.  The time is displayed in the format "hh: mm: ss" on the alphanumeric display of size 16 x 2  (columns x rows) with driver HD44780.  The use of a backlit display gives the impression of great visual at night.  Instead, use a full stop or semicolon blink I used options available in the Bascom and created their own simple animation changing every second.  With such simple design to evaluate the accuracy of the clock is good.  Accuracy was +1 second / 48 hours.)  __ Designed by Szymon Dyja

LCD Clock/Calendar -  LCD Display with Date and Time, 12hr format.   __ Designed by Jose Pino

LCD Display with Minimum Mass Wireless Coupler -  Its an adaption of the 2X 16 LCD project, by adding a fettite loop antenna, two resistors, and a capacitor.  Here the display shows the output of the 10 bit scanning voltmeter with Minimum Mass Wireless Coupler.     (ATtiny2313, AT90S2313)  __ Designed by Dick Cappels

LCD Frequency Counter -  This frequency counter module is intended as a "digital dial" frequency readout for portable QRP radio tranceivers.  It uses only six standard discrete logic IC's, i.e.  no PIC or other microcontroller, no programming to be done, etc.  The readout is designed to show kHz from the band edge with 100Hz resolution, i.e.00.0kHz to 99.9kHz.  The display updates ten times per second, which I have found to be a comfortable rate for tuning.  The current consumption is 1.4mA, very suitable for portable  (battery powered) operation.  The size of the counter is 2.3 x 1.6 x 0.8 inches  (58 x 41 x 20mm)  __ Designed by Hans Summers

LCD Frequency Counter PIC16F84 -  Schematic Only __ Designed by © Peter Halicky  OM3CPH

LCD Interface Saves µC I/O Pins -  12/12/97 EDN-Design Ideas Although in abundant use, mini microprocessers suffer from a low I/O-pin count, which places each pin at a premium.  Interfacing a bus-type device, such as an alphanumeric LCD, can use most of the I/O pins.  Even placing the display in the 4-bit transfer mode __ Circuit Design by Robert Wells, ETR, Moab, UT

LCD Panel Meter -  How to make a volt and amp meter for your battery bank.  Click Here

LCD Power Supply Provieds +/-15V LED Power -  Magazine Design Idea  s May 2004__ Linear Technology/Analog Devices

LCD Serial Terminal -  has RS-232 serial in/out, up to 20 programmable keys, Character LCD up to 2x40, 5 auxiliary inputs, 6 auxiliary outputs __ Designed by Bob Blick

LCD Terminal -  The LCD Terminal just like a normal terminal, it can connect to any host via RS-232 serial cable.  A PC keyboard must connect to it as the input device and what ever you type will send to host via RS-232 and display on a 40x4 LCD.  Data receive from host can also display on the LCD unit.  You can use this device as any Unix/Linux machine's console.  

LCD thermometer -  In this page, I introduce the LCD thermometer which is sold by "Akizuki Denshi Tsusho".  At this thermometer, the IC thermo sensor  (S8100) or the diode  (1S1588) is used as the thermo sensor.  When using the IC thermo sensor, the thermometry to +100°C from -40°C is possible.  Also, when using the diode, the measurement to +150°C from -20°C is possible.  Both sensors are contained in the kit.   __ Designed by Seiichi Inoue

LCD thermometer using PIC16F871 -  Build your own temperature meter for fun.  This project uses the Microchip TC77 digital temperature sensor,  a PIC16F871 microcontroller and a 7-segment 3˝ digit LCD.  You can study the source code on how to drive an LCD display.   __ Designed by Peter Jakab

LCD interface takes two wires -  EDN-Design Ideas March 26, 1998    [ NOTE : File has multiple design, scroll for this one.]  Alphanumeric LCD modules can provide an attractive display for a project, but their parallel I/O lines require a large number of outputs from a µC. For example, a direct LCD interface would consume all of the I/O pins of a small µC, such as the eight-pin PIC12C508 from Microchip Technology  (Chandler, AZ) . __ Circuit Design by Ed Maste, Jem Designs, Pickering, ON, Canad

LCD2LPT with LIRC -  The "LCD2LPT with Lirc" circuit is the compilation of two circuits found on the net on a single board.  The first is LCD to LPT interface and the second an IR remote control interface using http://www.  lirc.  org program.   __ Contact: IQ Technologies

LCD2USB. Part 1 -  Overview LCD2USB is a open source/open hardware project.  The goal of LCD2USB is to connect HD44780 based text LCD displays to various PCs via USB.  LCD2USB was meant to be cheap and to be made of easily available parts.  It is therefore __ Designed by Till Harbaum

LCD2USB. Part 2 -  Uploading the firmware If you are familiar with Atmel programming you probably know what you are doing.  The Makefile in lcd2USB/firmware/Makefile assumes, that you are using a simple STK200 compatible printer port adapter.  Connect the __ Designed by Till Harbaum

LCD-Bias Generator Uses Main Microcontroller as Control IC -  11/26/09  EDN-Design Ideas Control a buck-boost switch-mode regulator with the same microcontroller that sends data to an LCD __ Circuit Design by Tom Hughes, Dannemora, Auckland, New Zealand

LCD-bias supply provides precise tracking -  05/03/01 EDN-Design Ideas Small monochrome LCD systems often require split  (dual) -bias supplies with precise voltage tracking to prevent plating of the LCD.  The circuit in Figure 1 provIdeas±18 to±20V adjustable LCD bias voltages with 1% tracking accuracy.  The circuit operates from a single 4.2 to 2.5V Li-ion cell for portable monochrome LCD applications.   __ Circuit Design by David Kim

LCDs Implement Bar-Graph Displays -  09/12/97  EDN-Design Ideas You can easily implement LCD bar-graph displays in cost-sensitive designs by using widely available, low-cost, alphanumeric LCDs.  Bar-graph displays indicate voltage, current, power, battery and fuel gauges, and sound level  (in deci __ Circuit Design by Sergio Zigras, Paramus, NJ

LED bargraph ammeter for your car -  It's easy to build and even easier to connect.__ SiliconChip

LED Bar-Graph Display Represents Two Digits -  09/22/11  EDN-Design Ideas Use a counter IC to drive two sets of four LEDs.  The circuit in this Design Idea makes a voltmeter that reads to 0.99V.  The idea uses a counter IC to drive two sets of four LEDs  (Figure 1) .  Each of these two sets represents a BCD  (binary-coded-decimal) value.  With all of the LEDs off, the voltmeter reads 0V.  With all of the LEDs on, the reading is 0.99V.  Op amp IC1A generates a predictable voltage ramp. __ Circuit Design by Raju Baddi, Tata Institute of Fundamental Research, Pune University, Maharashtra, India

LED Clock -  12Hr LED clock using 16F628.  Also, schematic to build a Jumbo clock is included __ Designed by Jose Pino

LED Clock with Timer & Solar Panel Regulator -  This is a combination digital clock timer and solar panel charge controller used to maintain a deep cycle battery from a solar panel.  The timer output is used to control a 12 volt load for a 32 minute time interval each day.  Start time is set using 9 dip switches and ends 32 minutes later. __ Designed by Bill Bowden

LED display digital Voltmeter -  This is an easy to build, but nevertheless very accurate and useful digital voltmeter.  It has been designed as a panel meter and can be used in DC power supplies or anywhere else it is necessary to have an accurate indication of the voltage present.  The circuit employs the ADC  (Analogue to Digital Converter) I.C.  CL7107 made by INTERSIL. __ Designed by © Smart Kit Electronics

LED Driver Combines High Speed, Precision -  08/21/03  EDN-Design Ideas Applications such as turbidity measurement and densitometry require cleanly pulsed light sources with stable amplitudes.  The LED driver in Figure 1 illuminates retinal neurons in a biological experiment that has similar requirement __ Circuit Design by Richard Cappels, Mesa, AZ

LED Driver Delivers Constant Luminosity -  12-Jun-03 EDN-Design Ideas White-LED driver touts high efficiencyThe circuit in Figure 1 is similar in principle to that of a previous Design Idea (Reference 1] but offers improved,reproducible performance.  The output current is almost constant over an input-voltage range of 1.2 to 1.5V and is insensitive to variations of transistor gain.  Transistors Q1 and Q2 form an astable flip-flop __ Circuit Design by Israel Schleicher, Bakersfield, CA

LED driver displays standing-wave ratio -  03/18/99 EDN-Design Ideas -  (Page includes several designs.  Scroll to find this one)  The circuit in Figure 1 uses an LM3914 LED driver to directly display standing-wave ratio (SWR] in a low-cost, rugged instrument.  The SWR-sensing head is derived from the ARRL Antenna Handbookin an article that describes the tandem match.  The forward voltage and reflected voltage (VF+VR ] signal drives Page includes several designs.  Scroll to find this one __ Circuit Design by Richard Panosh, Vista, Bolingbrook, IL

LED driver doubles as fault Monitor -  08/05/04  EDN-Design Ideas LEDs find wide use as indicators and as light emitters in devices such as optocouplers.  In some applications, the LED or the emitter may be located remotely at some distance from the main unit.  Typical examples are dashboard-mounted automotive indicators and industrial optosensors.  In critical applications, you may require some means of monitoring the integrity of the LED __ Circuit Design by Anthony Smith, Scitech, Biddenham, Berdfordshire, England

LED driver provides oscillator for microcontroller -  16-Sep-04 EDN-Design Ideas The major building blocks for a white-LED driver are an oscillator, a charge pump, and a regulated current source.  National Semiconductor (www.national.com ] produces a device that contains all these building blocks in the highly integrated LM2791/2 IC.  You usually use white-LED drivers in tandem with cellular baseband controllers or microcontrollers __ Circuit Design by Wallace Ly, National Semiconductor, Santa Clara, CA

LED driver provides software-controlled intensity -  09/30/04  EDN-Design Ideas Recent advances in operating efficiency have expanded the use of LEDs from one of mere indicators to becoming driving forces in electronic lighting.  Increased reliability and ruggedness  (versus other lighting technologies] gives the __ Circuit Design by Neda Shahi and Bjorn Starmark, Maxim Integrated Products, Sunnyvale, CA

LED Illumination for Refrigerators -  The incandescent lamp provided inside the refrigerators glows whenever we open the door.  It suffers from several disadvantages like: 1.  Being a single light source, located in the upper corner, light does...__ Electronics Projects for You

LED Moving Sign 7 x 10 -  This sign uses two LED arrays to form a 7 X 10 matrix.  It produces moving messages or animations stored in an EPROM.  It uses no microprocessor.   As in most electric signs, the LEDs are matrixed, and strobed very quickly.   __ Designed by Bob Blick

LED Scrolling Display -  Most outdoor LED displays and some indoor LED displays are built around individually-mounted LEDs.  A cluster of red, green and blue diodes is driven together to form a full-colour display.In a...__ Electronics Projects for You

LED Tachometer with Dual Displays, Pt.1 -  A responsive and accurate tachometer is essential for motoring enthusiasts.  This new unit features a bright 4-digit display plus a 32-LED circular bargraph.  The LED bargraph responds rapidly to changes in RPM while the digital display shows accurate RPM readings with a steady throttle.__ SiliconChip

LED-Based Message Display -  This LED-based message display is built around readily available, low cost components.  It is easy to fabricate and makes use of 3mm red LEDs.  A total of 172 LEDs have been...__ Electronics Projects for You

LED-Based Running Display -  Here is a circuit that creates an eye-catching running display effect using LEDs.  It can be used to light up borders of animations, pictures, etc, and also for short word displays.__ Electronics Projects for You

LEDMATRIX, a 80x32 pixel DIY LED matrix display -  The LEDMATRIX additionally includes a simple speaker allowing to e.g.  notify the user of a new message being displayed.  Furthermore a TSOP1736 IR receiver can optionally be connected.  This device receives and decodes the IR signals used by ordinary TV remote controls.  By returning informtion about received IR signals to the controlling PC, the displays contents may e.g.  be remotely changed using a simple spare IR remote control. __ Designed by Till Harbaum <Till @ Harbaum.org>

Left-Right Right-Left Running Lights -  Our ROCKERUD6 has many applications; fill your party with running, blinking ROCKERS.  Mount the ROCKER on your bicycle so you'll be more visible and have a safer ride when signaling.  Use as a sign on room door as an indicator of how way "cool" you are.  Place ROCKER anywhere you’d like to draw attention and a smile.  The unique small design will allow you to mount it almost anywhere.  Operate it with 9V battery, 12V car battery, four 1.5V batteries, or via one of our battery simulator kits.   __ Contact: Kit from Elich Industrial Development, Corp

Level Shifter Follows Negative Output -  11/23/94 EDN-Design Ideas Transistors Q1 and Q2 in Fig 1, develop a feedback signal of the proper positive polarity for regulator IC1 from the circuit's negative output.  You can use this simple technique to sense any negative-voltage output __ Circuit Design by Dimitry Goder, Linear Technology Corp, Milpitas, CA

Li-Ion to Six White LEDs & OLED/LCD Bias -  The LT3498 can provide both the positive bias voltage required for OLED or CCD bias as well as drive multiple white LEDs for display backlighting__ Linear Technology/Analog Devices App Note, Mar 24th 2010

Li-Ion to Two White LEDs & OLED/LCD Bias -  The LT3498 can provide both the positive bias voltage required for OLED or CCD bias as well as drive multiple white LEDs for display backlighting__ Linear Technology/Analog Devices App Note, Mar 24th 2010

Line Driver Economically Synthesizes Impedance -  01/06/94 EDN-Design Ideas The line-driver circuit in Fig 1 uses a second op amp to synthesize the output impedance.  The conventional line-driver circuit employs a single op amp having a resistor whose resistance is equal to the desired impedance in series with the op amp's __ Circuit Design by Victor Koren, Orckit Communication Ltd, Ramat-Gan, Israel

LM3916 Dot/Bar Display Driver -  The LM3916 is a monolithic integrated circuit that 2 senses analog voltage levels and drives ten LEDs, LCDs, or Vacuum Fluorescents LCDs or vacuum fluorescent displays, providing an electronic version of the popular VU meter.  One pin by User changes the display from a bar graph to a moving dot display __ Designed by SNVS762B – JANUARY 2000 – REVISED MARCH 2013

Low Part Count UXGA-Resolution Cable Driver on 5V Supply -  LT6557 UXGA-Resolution Cable Driver circuit operating from a single 5V Supply.  This circuit has a 400MHz large signal bandwidth.  Single input biasing system resistor programs eliminates then usual input divider resistors.  High resolution HD quality circuit, one of three shown.  __ Linear Technology/Analog Devices App Note, Jul 2, 2012

Low-Cost LCD-Bias Generator Uses Main Microcontroller as Control IC -  26-Nov-09 EDN-Design Ideas Control a buck-boost switch-mode regulator with the same microcontroller that sends data to an LCD __ Circuit Design by Tom Hughes, Dannemora, Auckland, New Zealand

Low-cost LCDs implement bar-graph displays -  12-Sep-97 EDN-Design Ideas You can easily implement LCD bar-graph displays in cost-sensitive designs by using widely available, low-cost, alphanumeric LCDs.  Bar-graph displays indicate voltage, current, power, battery and fuel gauges, and sound level (in decibels], for example.  The method uses a 16-character-by-one-line.    __ Circuit Design by Sergio Zigras, Paramus, NJ

Low-cost, Simple Circuit 1-kV driver -  13-May-04 EDN-Design Ideas High-voltage drivers have recently received much attention, because they play an important role in driving piezoelectric and electro-optical components, for example.  Figure 1 shows a simple, low-cost, 1-kV driver.  The circuit uses offline, current-mode-control techniques and a flyback switching-power-supply design __ Circuit Design by Tai-Shan Liao and Prasit Champa, National Science Council, Hsinchu, Taiwan

Low-Noise AC Amplifier has digital control of gain & bandwidth -  02/05/04 EDN-Design Ideas In low-noise analog circuits, a high-gain amplifier serves at the input to increase the SNR.  The input signal level determines the input-stage gain; low-level signals require the highest gain.  It is also standard practice in low- __ Circuit Design by Philip Karantzalis, Linear Technology App Note, Milpitas, CA,

LT1399/LT1399HV Triple 300MHz Current Feedback Amplifiers Drive Component Video & LCD Displays -  DN213 Design Notes__ Linear Technology/Analog Devices

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Display Circuits:  #'s - C       D - I       J - N       O - T       U - Z

 


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