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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 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 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 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) . 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 Design by Tom Hughes, Dannemora, Auckland, New Zealand
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 Design by Sergio Zigras, Paramus, NJ
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 driving & controlling methods including constant current drivers & PWM brightness control - I decided to write this quick tutorial for two reasons: First because there are many people who would like to know more about driving and controlling LED lights, and second because i was provided an excellent LED driver chip from Farnell for test, and i wanted to put it under the microscope. So i will place this chip against some other LED drivers to see how good it is. __ Designed by Giorgos Lazaridis
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 Design by Dimitry Goder, Linear Technology Corp, Milpitas, CA
Limiting Amplifier Makes Efficient A/D-Converter Drive - 09/02/96 EDN-Design Ideas Limiting amplifiers are useful for protecting circuitry that has a limited input range. A classic example is an input buffer for an A/D converter. Many A/D converters are susceptible to damage if the input significantly exceeds the specified range. In addition Design by Mark Amarandos, Harris Semiconductor, Costa Mesa, CA
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 Design by Victor Koren, Orckit Communication Ltd, Ramat-Gan, Israel
Logic-Level actuated, adjustable glow-plug driver - All of my turbine starts before the research on the ECU involved a very successful spark ignition. I thought (only briefly) of trying to add spark ignition to the ECU, but the mixture of delicate logic circuitry and perhaps 30, 000V simply don't mix. My past experience with the hall sensor ignition for the radial engine bears this out in painful detail. So I decided to go with a glow-plug driver.
Low EMI LED Driver features 2A, 40V synchronous switches for automotive lighting - EDN-Design Ideas 02/28/2017 Versatile & quiet LED driver for automotive & industrial Design by LTC Design Note
Low-Cost Converter Drives Fluorescent Tube - 03/31/94 EDN-Design Ideas In the last few months, several designers have published circuits for cold-cathode fluorescent-tube (CCFT) power supplies, and a specialized power-supply IC is also now available. However, a significant number of CCFT applications Design by Steven C Hageman, Calex Manufacturing Co, Concord, CA
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 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. 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 Design by Tai-Shan Liao and Prasit Champa, National Science Council, Hsinchu, Taiwan
LT1399/LT1399HV Triple 300MHz Current Feedback Amplifiers Drive Component Video & LCD Displays - DN213 Design Notes__ Linear Technology/Analog Devices
LTC Design Note: 60V Buck-Boost LED driver has up to 98% efficiency, PWM dimming, spread spectrum - EDN-Design Ideas 10/28/2016 LED driver design is highly efficient, flicker-free, minimizes EMI, and plays well in the automotive environment Design
LTC Design Note: Driver for 14-bit, 4.5 MSPS ADC operates over a wide gain range - EDN-Design Ideas 05/28/2015 Assure optimum performance by matching up ADC and input driver Design
LTC Design Note: Low EMI LED Driver features 2A, 40V synchronous switches for automotive lighting - EDN-Design Ideas 02/28/2017 Versatile & quiet LED driver for automotive & industrial Design
LTC6946-2 Driving a Passive Downconverting Mixer - The LTC6946 is a high performance, low noise, 5.7GHz phase-locked loop (PLL) with a fully integrated VCO, including a reference divider, phase-frequency detector (PFD) with phase-lock indicator, ultralow noise charge pump, integer feedback divider, and VCO output divider. The charge pump contains selectable high and low voltage__ Linear Technology/Analog Devices App Note, Jan 16th 2012
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