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LCD Frequency Counter PIC16F84 - (electronic circuit added 1/06) |
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LCD Fundamentals using PIC16c92x Microcontrollers - Microchip Application Note
Published 26-Aug-97 (app note added 2/06) |
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LCD Interface Saves µC I/O Pins - 12/12/97 EDN-Design Ideas / (added 1/06) |
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LCD Monitor - (application / block diagram added 6/07) |
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LCD Power Supply Provieds +/-15V LED Power - Linear Technology Magazine Design
Ideas May 2004 (app note added 1/06) |
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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. (added 7/03) |
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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. ….(circuit design added 11/08) |
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LCD thermometer - 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…..(design
added 02/09) |
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LCD Thermometer (Seiichi Inoue) - (app note added 6/03) |
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LCD to PIC16c54 Schematic - (electronic circuit added 1/06) |
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LCD Triplex Drive with COP820cj - National Semiconductor Application Note (app
note added 2/06) |
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LCD2LPT with LIRC - (circuits added 08/08) |
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LCD-TV Panel - Intersil Application Block Diagram (app note added 6/06) |
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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.
The 32 minute duration is set by selecting the 5th bit (2^5 = 32) of a 4040 binary
counter (pin 2). The timer also has a manual toggle switch so the load can be manually
switched on or off and automatically shuts off after 32 minutes....(electronic circuit
added 10/05) |
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Low Cost LCDs Implement Bar Graph Displays - 09/12/97 EDN-Design Ideas / (added
2/06) |
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LT1399/LT1399HV Triple 300MHz Current Feedback Amplifiers Drive Component Video and
LCD Displays - DN213 Design Notes (Linear Technology) (app note added 6/06) |
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Microcontroller drives LCD with just one wire - (Design Ideas - EDN, 12/3/2007 A
Microchip PIC10F family microcontroller sparks an HD44780 LCD using a single I/O pin.
(electronic design idea added 9/2008) |
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New CCFL Power Supply Expands Automotive Applications for Back Lit Liquid Crystal
Displays - MicroNote 1402 from Microsem (app note added 6/06) |
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Nokia 3310 LCD & PIC12F629 Thermometer - English version link (electronic design
idea added 09/08) |
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Nokia 7650 LCD Controller - Despite nobody seems to own the appropriate
documentation, it is possible to use the big cheap color LCD displays of the Nokia
series 60 cell phones for home brew projects. I don't even have the docs and it was a
rough and painful way, but now it works.….(circuit design added 06/09) |
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PIC LCD and Keypad Driver - (circuit / schematic design added 6/06) |
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Pot Adjusts LCD's Contrast - 02/04/99 EDN-Design Ideas / (added 6/06) You can
use a digitally controlled potentiometer for many purposes. In this example, you can
use the device to regulate the contrast of a standard (such as two lines by 40
characters) LCD. You can use the circuit in Figure 1 in a portable test system, in
which you need to change the contrast of the LCD as a function of the viewing angle.
You choose the contrast setup from a menu and then use up or down buttons with µC IC1
to adjust the contrast. The µC stores the contrast value in the potentiometer, IC2.
This design uses a Xicor 10-k unit (dubbed "EEPOT"), but you could use other devices
in the design. The EEPOT connects to the LCD's VO line. You could connect.... |
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Potentiometer Controls LCD Bias - 03/17/94 EDN-Design Ideas / (added 11/06)
Designers of pen-based computers can easily relegate some controls that were
previously mechanical, such as switches and potentiometers, to on-screen icons. For
example, the circuit in Fig 1 shows one way that logic can control the -24V-dc LCD
bias using two general-purpose I/O command lines. The DS-1669 from Dallas
Semiconductor... |
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Precision Wideband Current Probe for LCD Backlight Measurement - DN101 Design
Notes (Linear Technology) (app note added 6/06) |
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Processor's PWM Output Controls LCD/LED Driver - 05/27/04 EDN Design Ideas /
(added 1/05)The PWM (pulse-width-modulation) output available from many
microprocessors is based on an internal 8or 16-bit counter and features a programmable
duty cycle. It is suitable for adjusting the output of an LCD driver, a
negative-voltage LCD driver, or a current-controlled LED driver. cost alternative that
provides not only a 4to 20-mA output, |
