Questions tagged [dot-matrix-display]

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How to stop current leakage in LED matrix

I know that this issue has been discussed in this forum, but I am a beginner in electronics and I was unable to come up with a solution to my problem by reading the related threads. I am doing a 3x5 ...
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1answer
39 views

SPI pins logic level issue [on hold]

I have ESP32 and the popular dot matrix module MAX7219 8*8 module to interface. It is connected through SPI pins. After a sample word printing on the maxtix it shows garbage outputs. Is it happening ...
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1answer
46 views

In which branch of engineering can I learn about display technologies like LCD, LED, OLED? [closed]

I am finishing high school this year and want to pursue a career where I can learn and develop display technologies like LCD, LED, OLED, and flexible displays. Can somebody please tell me what branch ...
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1answer
46 views

How to control a parallel OLED graphics display [closed]

I'm thinking of using a matrix OLED display like this one. This display uses a parallel interface very similar to those I've seen on text LCD displays, so I assume I'd control it in a similar way. ...
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2answers
196 views

ssd1306 registers

I got confusion while reading datasheet of the OLED display(128x64).I do not understand why to use two column start registers. https://cdn-shop.adafruit.com/datasheets/SSD1306.pdf
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1answer
390 views

LED bar graph driver with 12 pins? [closed]

I wanted to use a 12 LED bar graph with a LED bar graph driver but the the driver I know (LM3914) supports only 10 LEDs. Is there a similar driver IC with more out pins? The purpose is to use the bar ...
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1answer
832 views

Led matrix 64x64 1/32s HUB75 with only A, B and NC lines

I am trying to drive a led matrix, a RGB 64x64 with a HUB75 connector, 1/32 scan, with 2 RGB lines (R1G1B1, R2G2B2), a latch pin, a clock pin, an output enabled pin, and 3 pins I don't know how to use ...
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1answer
261 views

Bit banging TFT RGB

I am replacing an EOL 240x320 TFT LCD in a existing hardware product, where the recommended replacement does not support the system 8080 MPU interface (Driver ST7789 supports it but it is not ...
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2answers
506 views

8x8 LED Matrix re-build

the company i work for has tasked me in rebuilding an old LED sign we had replaced. (newer led rgb version) The driver board that was in the sign has gone out. So i am trying to rebuild the driver ...
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2answers
483 views

Why does the ssd1306 OLED controller have an unusual memory layout?

I've recently ported a driver for the ssd1306 OLED controller. https://cdn-shop.adafruit.com/datasheets/SSD1306.pdf http://www.ebay.co.uk/itm/0-96-inch-128x64-I2C-Interface-White-Color-OLED-Display-...
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1answer
323 views

How scroll led in dot matrix without using microcontroller? [closed]

I can turn ON my desired led in dot matrix. And given that i know about the trick of persistence of vision, help me.
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1answer
69 views

Is it feasible to use a logic analyser for debugging a proprietary dot matrix display and button panel for use with RaspberryPi

I have an internet radio which is not supporting the latest codecs. Details of the original radio: https://www.manualslib.com/products/Revo-Pico-Radiostation-2865277.html http://www.expertreviews....
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1answer
504 views

Futaba GP1006B05 VFD pinout [closed]

I have a Futaba GP1006B05 256x64 VFD display. I need the datasheet, I don't know the pinout. The pin connector is 50 pin. Does anyone have the GP1006B05 datasheet?
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2answers
1k views

How to drive 315 coills in flip-disc display

Recently I've bought 9 surplus electromagnetic flip-disc displays on Ebay. Each display has 5x7 dot matrix. Every dot is controlled by separate pin. See below: As far as I understand to flip one ...
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1answer
185 views

Do I need resistors for Dot-Matrix LED with driver IC?

I bought a small dot-matrix board and now I am asking myself whether I need resistors for each LED or if the driver (a MAX7219EWG) supplies the correct voltage for the LEDs?
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1answer
3k views

P10 Outdoor RGB DIP LED Module

As I have to make driver for this matrix module, I have a big problem finding its schematic or datasheet. There are many similar modules on the internet, they are made in China. I'm making driver on ...
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1answer
1k views

How to connect 5X7 LED dot matrix which has 7X7 pin both side.

I have 5X7 led dot matrix. But I am confused, how to connect it. Because it has 7 pin both the side. So, I am not going to differentiate that which is Row and column pin.
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2answers
309 views

Sendingdata on display

I have 132x65 dot matrix LCD. I am using STM32f303 controller in my application. I got success in displaying the normal 5x7 fonts on LCD. Now I what I want to do is to display 13x16 custom sized ...
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1answer
435 views

Dot Matrix IC message board [closed]

I'm trying to make a dot matrix message board -type thing work, The dot matrix IC's are the DL-57 Alpha Numeric Dot Matrix Display [Data Sheet] : https://drive.google.com/file/d/...
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2answers
7k views

Arduino/Raspberry Pi 2 LED Matrices

Does anyone know if I can use a single Arduino or Raspberry Pi to control two 32x32 LED matrices as sold on the Adafruit website? Here is a tutorial where you can wire the 32x32 matrix. Ideally, I'd ...
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2answers
6k views

How to Cascade 4017 Decade Counters?

I am creating a 16 by 16 LED Matrix using 74hc595 Shift Registers to address the columns and using 4017 Decade Counters to control the row. I am using the 4017's in connection with a transistor to ...
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2answers
163 views

When an LED has a “light degredation” specification, does that means it's an OLED?

I was reading a datasheet for an LED panel, and I saw a spec for "Light Degradation" after 1000 hours. Can I assume this means it's an OLED (Organic LED), and that the organic materials will decay ...
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1answer
6k views

Drawing on 8x32 LED matrix with 74HC154

How do I send a pattern into an 8x32 LED matrix? I'm using the AT89S52 microcontroller with a 74HC154 4-16 line decoder, programming in C with the Keil IDE. I've done vertical scanning, but am stumped ...
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3answers
2k views

Stripboard layout for a 16x16 dot matrix display

I've been planning a Veroboard/stripboard layout for four dot matrix LED displays. Most of the complexity is due to the daft way companies break out the pins on the 8x8 modules. This is what I have so ...