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Results tagged with lcd
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user 35530
Short for Liquid Crystal Display. LCDs consume little power, and exist in graphic LCDs, or segmented. The latter type is used for character and 7-segment digit display, and also in custom LCDs for consumer electronics.
1
vote
Accepted
SMT Chinese display questions
It's a multiplexed LCD display (bare glass) with elastomeric connections (that rubber-like strip that you probably removed). …
3
votes
Accepted
Parts inside a LCD 16x02
Your one has a backlight, unlike the reflective or transmissive type shown in the Microchip data. The white and transparent plastic bits are diffusers for the backlight LEDs.
All the rest is bonded …
2
votes
LCD Glass driving waveform
Ideally a microcontroller with an LCD peripheral on board, but it's not necessary if you have enough I/O pins. …
3
votes
Accepted
Identifying the model of LCD for replacement for temperature sensor
It's 99.8% for sure a custom display with that smiley face, so any replacement would almost surely have to come from a cannibalized unit or from the manufacturer (not likely).
1
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Voltage levels for LCD
Looks to me like the LCD panel needs each of those four supply rails, plus Vcom, plus Vddt (assuming you're using the touch function), plus another supply for the backlight. …
3
votes
How to work with LCD to display a sequence
'glass' to a very low level or you will damage the LCD by electrochemical action (50mV is frequently set as a limit, but read your LCD datasheet). … in your LCD datasheet. …
13
votes
Why there are no circular LCDs?
I asked an LCD maker or two about this. It's possible, if you have the money to spend. … I note that the Nest thermostat (where they did have plenty of money to spend) appears to be a masked square LCD with a bezel and crystal that give the illusion of a round LCD display. …
7
votes
A black blinking box character on LCD
Looks like the microcontroller is not being properly reset along with the display controller, so that the blinking cursor is being randomly displayed. If it does it in normal operation it is probably …
5
votes
Accepted
How to drive 3 1/2 digit static TN LCD with ATmega328 in low power mode?
No, you don't need to refresh static LCDs anywhere near that fast. 60Hz should be fine- which will give you a couple years of battery life if it scales (it's normally in the range 30-100Hz).
The mai …
0
votes
Accepted
What's wrong with my 16x2 LCD program and solder?
The LCD is not being initialized properly. It is probably a firmware or wiring error.
Check that the RW pin is grounded. … Connect your pot ELEMENT one side to GND (Vss on the LCD) and one to +5V (Vdd on the LCD) through a 1K resistor.
The pot WIPER goes to Vo on the LCD display. …
2
votes
Multiplexing 8-digit segment LCD
An 8-digit LCD will (probably) not be a static drive type because it would require 60+ conductors. … There are also inexpensive 8-bit micros with on-chip LCD drivers with various capabilities, which I would definitely recommend (you can do a search in your favorite families of products for the presence …
2
votes
Accepted
2.4" LCD TFT backlight current limit resistor
Yes, you are correct, however it might give you more even backlighting if you used 4 resistors that equal ~19 ohms in parallel. Eg. 50, 100, 100, 100 for K1..K4.
I would also check to see if the displ …
2
votes
Accepted
What low cost LCD can I use in minus -30°C?
A number of your photos are of OLED displays, which do not have the low temperature problem. For example this Vishay display specifies -40° operation.
Generally wide temperature range LCDs (such as f …
2
votes
Using HD44780 display without contrast potentiometer
It can be done for some displays. Wide temperature range displays require a negative contrast voltage.
For the narrow temperature range displays, 0V represents maximum contrast, and it may be a bit …
1
vote
Problem initializing 4-bit mode LCD(DEM 20486 SBH-PW-N)
Assuming it's Hitachi HD44780-compatible you need to study the data sheet very carefully and follow it to the letter and it will work. There should be plenty of stuff on the net for an AVR if you want …