MQTT LED Matrix Display 7 Replies My MQTT network at home moves up and down a lot of messages: sensor values, triggers, notifications, device statuses,… I use Node-RED to forward the important ones to PushOver and some others to a Blynk application. But I also happen to have an LED display at home and that […]
Our RGB matrix panel driver shield for Arduino Uno has been slightly revised. The shield now also carries the DS1307 RTC chip on board along with a CR1220 coin cell battery holder on the back. It is applicable for driving popular 16×32 RGB matrix panels with HUB75 (8×2 IDC) connectors. Row and column driver circuits are already
This project is a modification of my previous Bluetooth-enabled LED matrix display project, which used 8×64 monochromatic LED matrix (total 512 LEDs) for displaying scrolling text message. The original project used Bluetooth for display data transfer from a smartphone, but this one now uses Wifi. The display message is sent through web browser to a ESP8266
ESP8266 Wifi enabled 8×64 pixel LED matrix display Read More »
In this session we are going to design an 8×8 LED display with 8×8 LED matrix and ATmega8 microcontroller, which can show alphabets or names. A 8×8 LED matrix contains 64 LED (Light Emitting Diodes) which are arranged in the form of a matrix, hence the name LED matrix. These matrixes can be made by circuiting 64
8×8 LED Matrix Interfacing with AVR Microcontroller Read More »
In this tutorial we are going to design an 8×8 LED Matrix Scrolling Display using ATMEGA32, which will show scrolling alphabets. 8×8 LED Matrix contains 64 LEDs (Light Emitting Diodes) which are arranged in the form of a matrix, hence the name is LED matrix. We are going to make this Matrix by soldering 64 LEDs on
Scrolling Text Display on 8×8 LED Matrix using AVR Microcontroller Read More »
Summary The automotive products are quite recognized nowadays. It brings high demand on automotive chip and other related electronic devices. These demands are diverse, which brings difficulties to automotive developers. In this design, users are provided a modifiable firmware using In-System/In-Application Programming (ISP/IAP) via USB. It features the Vertical Alignment (VA) Chip-On-Glass (COG) display module
Multiplexing LEDs can be tricky, but we’re working with RGB LEDs, so think of each RGB as three individual LEDs. For an 8 x 8 matrix, that is 192 total LEDs on a single matrix. Even though there are only 32 connection pins, it is still possible to individually control the color and brightness of
This is a Dot Matrix Scrolling Sign. A Dot Matrix Display has an 5×7 led matrix with 5 columns and 7 rows. The display is controlled by the ATMega328 microcontroller board. The rows are controlled by PORTB of the microcontroller, while PORTD puts the data on the columns to make the characters. The Dot matrix
Teledyne LeCroy demonstrated the world’s first 100 GHz real-time oscilloscope on July 24, 2013 at the research facilities of Teledyne Scientific Company in Thousand Oaks, CA. In the demonstration, the prototype scope successfully acquired and displayed live signals at 100 GHz bandwidth. In addition, the Teledyne LeCroy and Teledyne Scientific also unveiled an indium phosphide
Creating the Picture The heart of an SED-TV is the millions of miniature CRTs, called surface-conduction electron emitters (SCEs). An SCE is microscopic, and it consists of a layer of carbon with a gap down the center. One half of the carbon layer connects to a negative electrode, and the other connects to a positive
