�P Displays 10 Bit Data on Three Leds: 11/07/96 EDN-Design
Ideas |
2
Wire LCD Interface using PIC16CF84: |
7 Segment LED Counter: |
72 LED Clock: |
9 Second Digital Readout Timer: |
Bar graph display: |
Big LED
Clock: |
Caller ID / DTMF Audio Decoder: |
Caller ID Circuits: information and circuits for different
systems used USA and Finland |
Caller ID Decoder Part 1: |
Caller ID Display Service: Caller ID decoder based on
68HC11, text in French |
Caller ID: |
Car Message Display: CaMeD was designed and built to be used
in an automobile. Its purpose is to display various
symbols/messages to the car driver traveling behind you. It
uses1024 LEDs to form a32 x32 matrix display. A total of12
symbols/messages can be displayed,4 of them being user-definable
by using a visual basic utility tool connected to the rs232 port
of a PC. |
Circuit controls brightness of multiple displays:
05/30/2002 EDN - Design Ideas / I recently needed to control
nine seven-segment displays for a microcontroller's serial port.
The complication I faced was the need to provide a continuous
brightness adjustment for all the digits—from completely dark to
fully bright. I couldn't easily use the obvious solution of a
string of 74HC595 serial-to-parallel converters driving the
segments through series resistors, because I wou.... |
Circuit Thermally Compensates LCD Contrast Bias: 03/16/95
EDN-Design Ideas |
Easily Display Bit Map Images on Small graphic LCDs:
11/19/98 EDN-Design Ideas |
Electronic Lock: |
Embedded processor directly drives LCD: 01/09/03 EDN-Design
Ideas / Driving a bare LCD does not necessarily require
specialized interface circuitry or peripherals. This Design Idea
describes an alternative drive scheme, which you can easily
implement using the general-purpose outputs of a
microcontroller. Many embedded-system applications need to
interact with a user by displaying simple numeric or
alphanumeric character… |
Excel offers painless LCD initialization: 09/20/2001 EDN -
Design Ideas / To display a font or a symbol on an LCD, you need
to convert the desired character into numerical data. Creating
the data for an entire font set requires specialized tools; even
with these tools, the task can be daunting. Alternatively, you
ca. |
Flashing
Christmas LED Display: |
GPS
LCD Display Project: |
Graphic LCD Interface: |
Interfacing 16x2 CharacterLCD to Parallel Port:
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LCD Interface Saves �C I / O Pins: 12/12/97 EDN-Design Ideas
|
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. |
LCD Thermometer: |
LED Barograph Driver: |
LED driver displays standing wave ratio: 03/18/99 EDN-Design
Ideas / PDF contains multiple circuits - scroll to find this
circuit |
LED Sign: uses two LED arrays to form a 7 X 10 matrix. It
produces moving messages or animations stored in an EPROM.
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MAX924 Bar graph Level gauge: |
Nixie Tube Clock: |
PIC 5x7 Display: |
Picxie 2 8x8
Animated LED Signboard: |
Seven segment LCD uses two wire interface : 09/04/03 EDN-Design
Ideas / You can connect seven-segment LCDs using only a two-wire
interface (Figure 1). The two-wire interface may be at the
field-effect, direct-drive LCD or at a serial interface (such as
I2C) that uses an eight-pin microcontroller. The design in
Figure 1 uses an Atmel (www.atmel.com) ATtiny12 microcontroller,
IC1....
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Simple LCD Interface Takes Two Wires: 03/26/98 EDN-Design
Ideas |
Solar Car Display Controller Schematic: |
Switch Configures Bare Bones, Two Digit Display: 12/21/95
EDN-Design Ideas |
TeleTEXT Devices: |
Time / Date / Message Video Overlay Generator!: video text
overlay circuit |
Tone Display System: This device gives visual feedback of
which note you're playing, so you can set up the note before
bringing up the volume to sound it. It features a 40-LED
display, for over three octaves of range at any given time.
Furthermore, a three-position switch extends the range by two
octaves, for a total usable range of over five octaves.
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Two
Wire LCD Interface using PIC16CF84: |