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Questions tagged [display]

Questions about LCDs, 7-segment LEDs, E-ink displays, etc.

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How to work with UART to make communication between stm32 and hmi nextion display in noisy environment?

in an ultrasonic generator project, I am using an STM32F334 microcontroller as the main controller and an HMI Nextion display (model NX8048T070) that includes another STM32 for driving the monitor. I ...
Mahdi Javidnasab's user avatar
0 votes
4 answers
67 views

Does leaking water damage 7-segment displays?

Does leaking water damage 7-segment displays, so that some of their LEDs can light up but others can't? If yes, can a 7-segment display which has been so damaged be repaired? If yes, how can it be ...
SA A's user avatar
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3 answers
58 views

Common cathode LCD display, can a common anode LCD be used instead?

I have a GPS which uses a common cathode LCD and I need to replace it as some segments stopped working but unfortunately I haven't found anywhere I can buy it as this version is mass produced and you ...
const314159's user avatar
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0 answers
20 views

Can a capacitive touchscreen have configurable sensitivity?

I'm using a NHD-5.0-800480FT-CSXP-CTP display with capacitive touchscreen built-in. Here the datasheet. I need to place the display behind a thin sheet of glass/plexiglass and I was looking for a way ...
Mark's user avatar
  • 1,235
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2 answers
66 views

Seven segment display special characters/symbols [closed]

How can one add these symbols in seven segment displays? I would like to add some symbols of pwr,ch1,ch2,ch3 to my product. Does anyone know what this is called and who can do manufacturing of this?
funtastic rdj's user avatar
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64 views

Troubleshooting e-Paper Connection Issues on Custom PCB Board: Seeking Advice

We are using a 0.97-inch LCD in our project. We customized the design in our PCB using the Despi-Co2 and designed it accordingly. Please see the attached image for the schematic diagram of our PCB. ...
Taimoor Malik's user avatar
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1 answer
55 views

Fixing TFT flexible pcb [closed]

I have damaged the flexible/ribon pcb on my display (as shown in the pictures below). I was thinking about soldering it, but the traces are tiny. Replacement isn’t possible. What do you guys think i ...
Vid's user avatar
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0 answers
108 views

Connecting MIPI DSI 39 pin to 40-pin LCD touch display

My board is radxa zero 2 pro. It has 4-lane MIPI DSI connector with 39-Pin and 0.3mm pitch. MIPI pin details of radxa zero 2 pro: ...
TryCatch's user avatar
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0 answers
53 views

How to use an 8-bit parallel display with an ESP32-S3-MINI?

I've made a PCB with an ESP-32-S3-MINI connected to NHD-C12864B2Z-RN-FBW display with a built-in ST7565R controller. I've tried some libraries like U8g2 to run this display, but with no success. Pins ...
Fabian_Olczak's user avatar
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1 answer
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Can single digit 7-segment displays use free digits from a multi-digit multiplexer?

The title's a bit convaluted, so I'll ellaborate. I'm driving a 4-digit 7-segment display with a multiplexing controller, the kind where it sets one display at a time and relies on persistence of ...
Steam Ranger's user avatar
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2 answers
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Using 7pin OLED 128x64 with iic

I just bought the 0.96” Monochrome OLED Display (SSD1306) and it claims to support both SPI and IIC/I2C with 7 pins. I want to use it with an Arduino Uno R3. How do I go about doing this and ensure ...
Aditya Jain's user avatar
0 votes
1 answer
176 views

Power Supply for VFD Display

I recently ordered a GP1294AI VFD display from Aliexpress. Unfortunately it did not contain the necessary power supply to power the display, but the datasheet did include the necessary schematics for ...
RemiFM's user avatar
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-1 votes
1 answer
62 views

Interface Parallel display - ESP32 [closed]

I accidently purchased a 2.4 inch Parallel display for my ESP32. After some reading I noticed that perhaps a SPI version would perhaps have been more simple. Display I am talking about is a NHD-2.4-...
Erwin Preshantram's user avatar
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1 answer
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LVDS Display connected to Deserializer clarification needed

I need to use an LVDS display in my project.The pin configuration of LVDS display is given below(I can't share P/N here due to NDA). As per my knowledge the PIN No 18 and 19 are Horizontal sync and ...
Confused's user avatar
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0 answers
47 views

Scalable Voltage Display

I am trying to create my first PCB, and I am trying to measure and display scaled voltage and current output from a few different sensors on several seven segment displays. For example, one of the ...
tyster02's user avatar
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1 answer
84 views

Help Find Unknown Bad Zener: Digital Volt Amp Meter

This is Digital Volt Amp meter display module. Working voltage was max 30v and I burned the transistor BL P11 NPN (1A) with more input. Replaced with CXT5551 (600mA), operating current for module is ...
Paul's user avatar
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1 answer
51 views

Confused about Sharp Memory Display's analog power and ferrite beads

I have no background in electronics. I'm trying to understand Sharp Memory Display. I read the device specification to the best of my limited abilities, but still confused about a few things. Why ...
metazoan94's user avatar
1 vote
0 answers
43 views

Understanding rapid, non-permanent phone screen degradation

This question arises because of a problem observed during a phone repair but it is not a repair question! I haven't a hope of repairing the display but I would like to understand the display and ...
Transistor's user avatar
  • 177k
1 vote
2 answers
408 views

Hacking a vacuum fluorescent display from an old DVD player

I have salvaged this front panel from an old DVD player. It has a VFD and an IR receiver. The board runs on a PT6315 chip. I know the basics of electronics and Arduinos, but I am not an expert. I ...
Rajeev Jeganathan's user avatar
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0 answers
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Unable to communicate with SPI based display board

I need to communicate with a display board that is acting as master and my board will act as slave. The reference document says that " Totally 26 bytes for communication between display and ...
Saqib Sohail's user avatar
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2 answers
141 views

TFP401PZP: Unable to get proper video output, ghost screen/distorted pixels

I have designed my own display driver board using a TI TFP401PZP TMDS DVI receiver/deserializer which is connected to a 24-bit, parallel RGB, 7 inch capacitive touch display with a resolution of ...
Aryan's user avatar
  • 21
1 vote
1 answer
115 views

SSD1306 horizontal mode not working

I'm trying to fill the screen of SSD1306 white. I'm using horizontal page addressing mode to not set page address manually using commands. According to SSD1306 datasheet, when the column address ...
Pavlo's user avatar
  • 13
0 votes
1 answer
94 views

LVDS for TFT touch display [closed]

I have a hardware with the LVDS interface to control the display. My question: Which programming language and IDE would be most suitable for programming LVDS? Or is it possible with any language like ...
unknown's user avatar
7 votes
2 answers
513 views

Is this iPad screen flex cable glued onto the contacts?

While trying to change the LCD driver PCB of an iPad screen, I noticed that the flex cables coming from the display are not soldered but glued onto the PCB. The flex cable on the right was cut from ...
Bob amall's user avatar
1 vote
0 answers
78 views

How can I maximize the refresh rate of this OLED display?

I have a single-color 1.5" 128x64 transparent OLED display with an integrated SSD1309 controller. It came with a small driver board that supports the SPI and I2C interfaces on the chip. I need to ...
Joshua Dotson's user avatar
0 votes
1 answer
58 views

Do I need to edge instead of set a pin that is considered a "strobe"?

I am trying to get the NHD-320240WG display to run using my 8 bit hobby computer. I have successfully gotten this display to work with an Arduino and have ported the code to 6502 assembly. When ...
Bart Friederichs's user avatar
0 votes
1 answer
278 views

Utilizing Multiple USB 3.0 Ports for USB-C DisplayPort Alt Mode

I'm currently exploring the possibility of leveraging multiple USB 3.0 ports to collectively emulate USB-C DisplayPort Alt Mode for connecting an external monitor. Is it technically feasible to ...
Lewis Trem's user avatar
1 vote
1 answer
207 views

Brightness / contrast controls: what do they do on LCD displays?

I was not able to find an answer via web search. AFAIK LCD displays can control brightness via changing brightness of backlight, in turn via electric current value (up/down). I don't recall reading ...
Martian2020's user avatar
3 votes
3 answers
416 views

How to display real time data on analog scale if maximum send rate is 50ms

I have nextion display on witch is positioned analog scale. It needs to present Amps from device which mcu monitoring. Problem is that current can grow by several tens of amperes in just several ...
macola995's user avatar
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0 answers
63 views

Unable to drive 7 segment 6 digits multiplexed display using 74HC595 and arduino

I have reverse engineered some existing circuit that was given to me which consists of a multiplexed 6 digits 7 segments displays driven by 2 darligton arrays and BD227 transistors. The original ...
floxia's user avatar
  • 109
-2 votes
1 answer
77 views

Why can't I divide the total number of bytes of a .BMP file by the color depth? [closed]

I have a .BMP file resize.bmp. The total number of bytes that encode pixels in this file is 320 bytes. The color depth in this file is 3 bytes. 0x176 total number of bytes including Header 0x140 ...
stm's user avatar
  • 89
0 votes
1 answer
107 views

Achieving faster data transfer from a microcontroller to a display

The current fastest way of transferring data from a microcontroller to a display that I know of is by constructing the data in RAM and then sending it over to the display via parallel communication ...
ropeFullOfHope's user avatar
1 vote
1 answer
89 views

Diagnosing Issue in Bench Power Supply with Buggy Display

I have a BK Precision 1660 Power Supply with a buggy display. The system has two displays (master and slave), the slave display working perfectly fine while the master display will sometimes flash ...
mm3psych0sis's user avatar
0 votes
1 answer
98 views

Is an old smartphone display usable with MCU

Can a smartphone display be reused? Do these displays use some standard pinout or not? Display has this circuit on the back and a 24pin connector. I couldn't find anything about the ic. It's a ...
Hedgehog's user avatar
0 votes
2 answers
229 views

Current draw of small TFT display

Has anyone used these small 1" displays before with a GC9A01A driver? Link I would like to use it for a battery powered project but am unable to find info about how much current it draws. I'd ...
Thomas C.'s user avatar
  • 153
0 votes
0 answers
44 views

Is it possible to re-use a 7 inches TFT Display on Raspberry-Pi? [duplicate]

I'm trying to re-use a display I recovered from an old digital photo frame as a display for a Raspberry Pi. The display is a TFT 7" LCD with backlight, but it comes with a 26-pin flat cable for ...
Grohlfer's user avatar
0 votes
0 answers
67 views

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 ...
henryv3's user avatar
  • 23
1 vote
2 answers
127 views

Problem with changing scan direction when interfacing with a CH1115 display controller (very similar to popular SSD1306)

I'm trying to get a display with CH1115 controller to work using SPI. The current situation is that the display works with my code just fine: I'm able to control it to write and display data. The ...
FloatingGuide's user avatar
0 votes
1 answer
157 views

Monitor ID Pins on VGA Connector

I'm working on a hardware project where I want my board to act as a VGA monitor, so it has a female VGA connector on it. Everything I can find online says that pins 11, 12, 4, 15, are used to identify ...
tryna_learn's user avatar
0 votes
1 answer
88 views

Tablet LCD display to hdmi

I have an old tablet and an old phone and I have recovered the lcd displays from both of them. I want to use them as monitors with an hdmi or vga port, but seeing the cables of the two i do not know ...
Alessandro Valentino's user avatar
0 votes
0 answers
83 views

Can I connect this IPS display to a Raspberry Pi (or any SBC for that matter)

Can I use this display with a Raspberry Pi or any other SBC? It's a 640 x 480 IPS display with a 30 pin, 05mm pitch flex cable at the end of it. I've been trying to look for a connector or something ...
Ahan Jaiswal's user avatar
0 votes
1 answer
771 views

Can a CRT last 100,000 hours or even 300,000?

Online, I could find that high-quality cathode-ray-tube displays (whether be it for a computer monitor or a television set) have a design lifespan of 30,000-50,000 hours of cumulative operation. I ...
CoastCity Lapse 00crashtest's user avatar
0 votes
0 answers
247 views

Display Port 1.4 Hot Plug Detect (HPD) Behaviour on AMD 7040 Motherboard

For some reason I can't get my DP port working on the AMD 7040 motherboard that I have designed, where on the same board, I have also Mini-DP that has an identical electrical circuit (in schematic) ...
Firas Abd El Gani's user avatar
4 votes
1 answer
1k views

How do we control a 7-segment display with a rotary switch to ground and 12v supply?

I am currently trying to add a 7 segment display to my motorbikes gear indicator. requirements dictated by the bike: there is a positional switch to ground for each gear. If you think it's like a ...
Ashley Reid's user avatar
3 votes
2 answers
73 views

Can you damage a MIPI screen with incorrect timings / config?

Per the title really, I've been battling with (very VERY similar) MIPI screens from a few suppliers and they've been throwing different timings and configs / initialisation sequences at me... well, to ...
John U's user avatar
  • 7,159
1 vote
1 answer
81 views

What kind of displays and processors are used in consumer electronic products (like a coffee machine)? [closed]

I am presently working on the development of a smart kitchen appliance, which will eventually be sold in the market. As part of this project, I need to incorporate a touch display for the operation of ...
santosh kumar's user avatar
0 votes
3 answers
1k views

MIPI DSI touch screen compatibility with Orange Pi 5B

TD;DR Is DSI and MIPI D-PHY TX 4 lane the same thing? I came across a "Waveshare 7.9 touch display for Raspberry Pi" which has two options, HDMI and DSI. As I can see from Orange Pi's ...
44yu5h's user avatar
  • 518
3 votes
5 answers
223 views

Component that can display state without power

I'm looking for a component that can display a (binary) state without being powered. The only things I could come up with are flip-dots and e-ink. Flip-dots are hard to source and e-ink is expensive. ...
Zipdox's user avatar
  • 41
1 vote
1 answer
123 views

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. ...
henryv3's user avatar
  • 23
0 votes
1 answer
41 views

Ideas about generating images for E-Paper display

I am currently working on a project where I'm using a DA14531 BLE-module to collect data from some sensors and display the collected data on an E-paper display. As the display is quite large (400x300 ...
user294957's user avatar

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