Questions tagged [tft]
TFT is a thin film transistor. However in common use it normally refers to a type of LCD display technology that uses thin film transistors located close to the pixels to allow higher contrast and beter multiplexing than passive LCD displays.
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Have I configured the correct current supply for my TFT LCD Backlight?
I am currently working on a custom PCB which integrates a 3.5" TFT LCD. I am planning on driving the TFT backlight using a MIC4801 LED Driver and want to make sure I have configured the correct ...
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ST7735 driver IC connection with TFT DISPLAY
I am a noob to electronics and thinking of using this 128x160 1.8 inch Color TFT LCD Display with ST7735 Controller SPI in my project. So, does the TFT Display come with a pre-programmed ST7735 ...
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Can I run my 3.5" TFT backlight off of a 3.3V supply?
I just wanted to confirm my thoughts on the selection of resistor value for a 3.5" TFT screen I am working with.
The datasheet gives a forward voltage of 3.2 V and a forward current of 120 mA.
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How to connect 8-bit display to GPIO extender
I wanted to connect an 8-bit resistive touch display to a I2C GPIO extender which get's connected to a ESP-32, as seen in the picture
The display has a lot of pins, and I really need to know if I ...
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STM32F769I-DISCO - Really noisy TFT LCD display
I am a new user of an STM32F769I-DISCO MCU and the problem I'm having is with one of the examples called "BSP".
I'm using the STM32CubeIDE to build and run the files. The program does build ...
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SPI pins in Winstar TFT display?
I'm trying to figure out SPI pins for Winstar WF32DSLAJDNN0 TFT display. The datasheet is not very clear on that.
I think the right pins are as below, but would be great to get that confirmed before ...
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Use the interal framebuffer of a display driver IC (here: ST7789V ) in RGB mode
I have an embedded RTOS system driving a display with ST7789V over uC's RGB565 interface. To save RAM, it would be nice to avoid the typical double buffering by having only one framebuffer in the uC ...
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How to increase the voltage for a TFT SPI ILI9486 powered via USB?
Hello everyone,
I am new to the IoT field and have an ILI9486 SPI TFT display that can be powered between 3V and 5V. I am using pin A0, as shown in the provided schematic, to power the display using a ...
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ILI9341 TFT display in XIAO ESP32 Seeeduino MISO issue
I am using a XIAO ESP32 Seeeduino with an ILI9341 TFT display that is working great. The touch screen is also working well.
The problem is that I have to disconnect the MISO connection every time I ...
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Custom TFP401 based display color/frame issues
We have just designed a board using a TFP401A to decode an HDMI signal into a 24 bit parellel RGB signal that is then sent to a standard 50-pin TFT display module which uses a 24-bit parallel RGB bus. ...
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Screen for RasPi - scavenging from useless "tablet"?
I found an old WinCE machine with a completely useless platform - however the screen would be perfect for a Rapsberry project.
Problem is: the sticker either does not have the real model number or ...
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LTDC two layers rendering on TFT LCD
I have initialized two layers in an STM32F429. In layer 1, my frame buffer address is set to 0xC0000000 (external SD-RAM). In this layer, I drew some vertical and horizontal lines (to make a grid).
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How can front- and backporch in TFT displays be inexact?
Today I had the question as to why front- and backporches in TFT displays can vary. There is this image (from https://www.youtube.com/watch?v=hnzhK5Vvvao) which shows the HSYNC, HBP, Active Width and ...
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ST7789 LCD Driver Row Address Set Bug
I'm using a 320x240 LCD with a ST7789 driver in 8 bit parallel mode. I'm just getting things set up and am trying to draw a small square in the middle of the screen to make sure everything is working ...
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TFT screen image being squashed and printed twice
I am getting into graphics programming and have come across an odd issue. I am using Microchip's Harmony + Legato platform on a PIC32MZ DA chip for a TFT screen that takes a 24-bit RGB format input ...
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Interfacing TFT LCD Module with Arduino
I recently found a 3.5in QVGA TFT LCD module (Stellaris LaunchPad LCD Boosterpack EB-LM4F120-L35) which is meant to be a booster pack for the EK-LM4F120XL development board by TI. It is supposed to ...
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How can I get higher fps with ESP32-CAM and ST7789 TFT LCD?
I have an ESP32-CAM AI Thinker board with an OV2640 image sensor and an ST7789 240x240 TFT LCD (SPI, but without a CS pin). I am trying to get a relatively good frame rate (30+ fps) on the TFT. I am ...
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TFT-LCD VCOM powered by LDO
Is it possible to generate VCOM voltage for TFT-LCD display by LDO? I am considering using MAX16929 for generating AVDD (9.6V), VGL (-6V), VGH (18V) and VDD (3.3V) for touch controller, but remaining ...
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STM32 C library for ILI9341 TFT LCD with 16-bit data bus?
I'm using FSMC with ILI9341 LCD and I have some troubles with the LCD.
The LCD comes in lot of different sorts, but this one do I have.
I'm using this library but the problem is that I get only two ...
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What is the bare minimum number of pins needed to connect to an ILI9488 TFT in order to turn on the LED backlight?
I've bought one of these 3.5" TFT panels: and an accompanying 40-pin FPC-to-header adapter so that I can plug it into a breadboard (specifically, "ILI9488 no touch").
I've got a project ...
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Is it possible to make an OFET in a home lab?
Is there a way to build an OFET at home?
(low tech, no deep vacuum and plasma, without toxic/hard to dispose chemicals)
What can be the minimum budget for that?
While conductive polymers are pretty ...
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How do I test TFT LCD?
I decided to make my own display that I can connect it to Raspberry pi or Jetson nano. so I've recently bought TFT 480x480 LCD with ST7701S and RGB interface. I think I'm providing valid signal, but ...
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Driving an LCD backlight using a PNP transistor
I'm trying to turn on/off the backlight of this LCD for the power saving when my ESP8266 goes to deep sleep. Because the ESP8266 has a maximum output current of 12mA and the LCD needs a current about ...
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How data is sent to a raw TFT?
I have used TFT drivers before but now I want to challenge myself by connecting an FPGA to a raw TFT without a driver.
I am having hard time understanding the basics of the signals : how RGB pins are ...
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How do I get this to work 3.2 ”TFT 480x320?
Help please. I am using STM32F401CCU board to connect to 3.2 ”TFT 480x320. I can't get it to work, the display just glows white and nothing happens.
[http://imgs.elgrad.net/Upload/sub-4/21450.pdf]2
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CC2541 Interface with ST7789V based 1.14" TFT Display
I am working off a custom board having CC2541 from Texas as the Main Controller and a 1.14" TFT Display being controlled via ST7789V Drive IC. These two are connected over the SPI Interface. ...
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Correct Wiring for Adafruit 2.2" TFT display w/ sd card
Apologies for a potentially frowned upon question, but Adafruit's documentation for the 2.2" TFT display with sd card breakout is a little lacking. Essentially, they describe the display and sd ...
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Difference between LVDS, MIPI, DPI and DSI
I'm on a project that involves TFT displays and Raspberry Pi Compute Module 4. I noticed that there are several acronyms, protocols confusing information.
As I understand it, there are protocols:
DBI:...
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Using an RGB TFT screen on the Raspberry Pi 4
I want to use the HT0700EI02A TFT screen on the Raspberry Pi 4 Compute Module.
Raspberry Datasheet: https://datasheets.raspberrypi.org/cm4/cm4-datasheet.pdf
Screen Datasheet: https://cdn.ozdisan.com/...
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Custom TFT Screen Question
I'm looking to get a custom Resistive Touch TFT screen made for a project. The company have specified that the screen will utilize a F31L-1A7H1-11040 type connection to go between the screen and ...
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How to Identify my TFT LCD Driver Chip
This is one of my TFT LCD which I have no Technical details.
How can I find which driver chip they have used? I have previously interfaced TFT based on RA8875 driver. So I Have a basic idea.
I have ...
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TFT display wiring on Sparkfun Pro Micro
Please help me configure the wiring for this TFT display.
I’ve tried using the Waveshare TFT display with both the Sparkfun Pro Micro and the Raspberry Pico but had very little success. Only the ...
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Non white lines on 1920x180 LVDS controlled TFT
We are integrating a LVDS 27" 1920x1080 panel with a commercial DVI to LVDS controller board.
We have a PC, that has a DVI output, and we connect it to the Video controller.
The video controller ...
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Understanding how TFT driver operates (ILI9486)
I'm trying to understand how to interface TFT driver ILI9486. I'm doing this because I want to control TFT display with PIC microcontroller and not AVR (for which libraries already exist). I own the ...
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How much current does the back light of ILI9341 LCD take?
I'm planning to do a turn-on-back-light construction with transistors like this:
Where the LED is the back light of the LCD ILI9341.
But to select the resistors, I need to find first how much current ...
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GMSL Deserializer to LCD Link Rate
I need to calculate the Link Rate for my GMSL Deserializer which is connected to a 800 * 480 TFT Display.
In that case, I stumbled upon this Article
On the last few lines, they are asking to multiply ...
user220456
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Transform TFT to AMOLED
I was wondering if it is possible to transform a TFT LCD into an AMOLED as both are active matrixes.
The composition seems to be similar.
AMOLED
TFT (LCD)
And if it wouldn't be possible, could I at ...
user278665
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How is a TFT array made?
The more I get into TFT arrays, the more I'm lost.
I know what it does, but how does it look like? Can you split a display and just hold a TFT? Can you buy a TFT on glass, without the rest of the ...
user278665
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How to adjust both brightness and contrast of a TFT LCD display
I am developing an HMI using the display "S039QWQ01HS" and I have the requirement to provide control to adjust the brightness and contrast of it.
For the brightness control, I have already ...
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problem with using ili9341 TFT LCD with stm32f103RE
i successfully used a HAL code i found on Github for driving an ili9341 TFT LCD with SPI then I rewrote the code with registers. Part of my code works and i am able to fill pixels with color but when ...
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Video format using LVDS signalling
I have a 3.1inch TFT.
I have the below two pins
Can someone tell me what does the 2 pins do?
My questions :
So, I can select either 6 bit or 8 bit for the whole communication and can't change in-...
user220456
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4DLCD display doesn't work with ESP32 via SPI
I have ESP32 custom made board and I cannot make it work with 4DLCD-35480320 (no touch) display via SPI. I triple checked all the wiring. Everything works except the display.
I used Arduino IDE and ...
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Car Head Unit LCD LVDS to HDMI
I've recently picked up a head unit for my car and I am trying to get a HDMI signal to it. I've taken it apart and had a look at the hardware, and it seems to be using a single ribbon cable to drive ...
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How to interface MIPI DSI with a microcontroller
I'd like to learn about interfacing a TFT LCD with a microcontroller via the MIPI DSI protocol and writing a program for it.
Both have suitable number of pins, some microcontrollers support MIPI DSI ...
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Custom HDMI-to-( TFT or LVDS ) decoder/driver
I am working on a custom-made handheld PCB based around a PI Compute Module 3+ and one of the hardest steps I have found is how to include an HDMI-to-50pin-TTL driver on my PCB to run an LCD TFT 7&...
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LCD Power sequencing
According to datasheet of LCD TFT ( https://www.gms-ds.com/fileadmin/produkte/pdf/DLC0700BIG-1.pdf ) page 11 there is power sequence necessary for proper initialization of LCD.
On the other hand at ...
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Microcontroller and design for multiple displays
At my day job I'm an application level developer, but I have an idea that I would like to prototype that's a bit more on the microcontroller side.
Basically I want to be able to display some static ...
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Minimum wiring for remote ST7735R SPI TFT display
Figure 1. ST7735R 1.8" TFT colour LCD. Image source: eBay.
I have an ST7735R working on an Arduino Nano as shown below.
Figure 2. Current setup.
I want to try mounting the display remotely (< ...
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SPI MOSI line only hits 1.2V for speeds above 500kHz and below 4MHz (3.3V logic)
I'm trying to drive a ST7789 TFT display (datasheet) with an ATTiny-416, but for some reason SPI fails at speeds above 500kHz. So far I've had these results:
500kHz: pass
666kHz: fail
1MHz: fail
...
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Why are graphic displays still so expensive? [closed]
As a new electronics enthusiast, I've been able to score a lot of components for very cheap, ranging from beefy MCUs in the 10$ ballpark to heaps of ICs for sub-dollar prices. However, buying a coffee-...
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