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21 Oct 2014


LG Display has an excellent article on how they build TFT LCD displays:

Ever wondered how the TV and monitor displays you use every day work? The TFT-LCD manufacturing process consists of a set of processes for producing TFT, color filtering, cell, module and others. LG Display Newsroom gives a detailed, but easy to follow explanation of the entire steps below.

Let’s take a closer look at the production process for a TFT board, the bottom-most layer of an LCD panel. The image above depicts a TFT board, which consists of rows of small rectangular sections that together resembles a chessboard. Each rectangular section is a pixel, and each pixel contains a transistor that controls its function. The TFT process is the process that builds these transistors on top of a glass substrate.


TFT-LCD Production Process Explained - [Link]

13 Oct 2014


Arduino WebRadio player is an inexpensive WebRadio player that can plays internet audio streams up to 64-kbps and is based on mp3, aac and wma audio formats.

The main components are:

  • Arduino Pro mini board
  • ENC28J60 ethernet module
  • VS1053B mp3, aac, wma decoder
  • 84×48 dot matrix LCD module (Nokia 5110)

Arduino WebRadio player - [Link]

8 Oct 2014


With the Bolymin BE635 graphic embedded module it´s possible to focus only on software development – hardware is done.

A possibility to interactively adjust various parameters and at the same time to see a “result” of our settings (for example a status of a given device) considerably increases safety and reliability in various industry sectors. That´s probably one of reasons why a graphic output becomes a standard even in devices, where they were recently used very rarely so far.

From the development point of view, one of the key deciding factors is a platform, on which a given system is built (processor, OS).
PIC32 family certainly belongs to popular microcontrollers (32 bit RISC CPU), that´s why the new graphic embedded module Bolymin BE635 addresses all, who know PIC32, or they want to become familiar with it. For everyone, who´ve ever worked with PIC32 family, a development of application will be much easier with BE635, as practically all necessary hardware is on one board and at the same time we get a support in a form of various drivers for communication as well as graphic output. For programming purposes a new Microchip PICkit3 is suitable and SW development can be done in the known environment Microchip MPLAB IDE. BE635 is designed as a universal module, where only a designer decides, how much computing power of a processor will use on which activity (displaying, data processing, external HW control, communication, …), that´s why possibilities of its usage are really very wide.

Compact module (93x67x15mm) with a 3,5“ TFT LCD display (320x240px) is equipped sufficiently, to become attractive. For example:

  • built-in 512kB ISP flash/ 64 kB SRAM/ 16 kB EEPROM
  • support of microSD
  • 1x RS232, 1x SPI, 1x I2C
  • selectable 1x RS232/422/485/USB (depending on a version)
  • 1x 10bit ADC, 12x GPIO
  • libraries for successful programming, drivers for interfaces and a touch panel

BE635 is available in 4 versions, differing by an additional RS232/485/422/USB port. Single supply 5V and easy mechanical assembly by means of a metal frame with mounting holes also belong to pluses of a new BE635. Soon, there will be available also other similar modules with the same functionality but with bigger displays, for example BE657 with a 5,7“ (640x480px) display, thus an application for BE635 will be usable for the BE657 alike.

Detailed information can be found in BE635, BE657 flyers and in the BE635 user manual .

Bolymin BE635 – for all PIC32 lovers - [Link]

30 Sep 2014


by sebulli.com:

Very small power supply unit in the size of a cigarette box. The input voltage is 24V. Its supplied by a external switch mode AC/DC PSU. The output voltage range is 0V to 24V at 0A to 3A. A switch mode preregulator reduces the power loss. This allows a very compact design. Voltage and current are displayed on a RGB OLED display

Miniatur Power Supply Unit with 0..24V and 0..3A - [Link]

22 Sep 2014


Peter Jakab has written a new article on how to adapt character LCD modules for 3 volt operation.

Generic character LCD modules contain an industry standard HD44780  compatible controller, which can operate down at 3 volts. But the modules are usually specified to work only at 5 volts, unless you choose a specific one designed for 3V operation. It is possible and simple to adapt the 5V modules to work on 3 volts.


Getting character LCDs to work at 3 volts - [Link]

12 Sep 2014


by fileark @ electronhacks.com:

BMO from Comedy Central’s Adventure Time is adorable, if only someone would make one that can walk! Atleast we can make one with a personality. Here is a build using easy to get parts including Arduino Pro  Mini, Nokia 3310 LCD screen, audio playback, accelerometers, and distance sensors.

The parts added up to around $70.00

DIY Arduino Mini BMO - [Link]

2 Sep 2014


by embedded-lab.com

Infrared remote control for home appliances is a popular project among hobbyists and students. Smart Outlet is a similar project that provides an infrared controlled AC outlet to connect any electric appliance and has an integrated timer in it. The appliance can be turned on and off from several feet away using an IR remote. The device is Arduino-controlled and has a LCD display to provide a menu based interface to the user for its operation and settings.

Infra-red controlled smart AC outlet - [Link]

28 Aug 2014


Customizable, hackable real-time display used to inform you of notifications, tasks, metrics, emails and many more! by Jack Trowbridge:

Noteu is one of the first customizable, hackable real-time displays that keeps you updated in life, social media and business. Instead of needing to check multiple websites, apps or open any windows Noteu tells you what you need to know at a glance all in one place. With its easy to use Java application compatible on Windows, Mac and Linux you can choose amongst a wide range of updates and alerts with huge customization. Noteu being Open Source, based on the Ardunio platform, interfaceable with Java API’s and a simple serial protocol allows for infinite hacking.

Noteu: USB Hackable Real-Time Display - [Link]

12 Aug 2014


ReturnZero published a stroboscope build:

At its heart, a stroboscope is just a rectangular wave generator hooked up to a light source. I wanted a few extra features to make it nice to use:
Ability to set flash rate by either frequency or RPM
Set duty cycle of output without affecting flash rate
LCD display

– 2×16 for displaying RPM, frequency and duty (one per line, so one will be hidden at any time)
Rotary encoder (with button) for main interface

– When button is not pressed, knob will increase/decrease the value of the selected digit
– When button is pressed, rotating knob will scroll through display digits
Buttons for quickly halfing/doubling thirding/trebling the flash rate

– This is useful for checking that you haven’t hit on a multiple of the rotation rate
Nice beefy output stage for switch big sets of LEDs


DIY stroboscope - [Link]

25 Jul 2014


Flat displays of the EA DOG series are now available even with a bigger resolution or with more characters.

EADOG series is familiar to many of you and probably it´s your favorite one from these main reasons:

  • displays are unusually flat (thin)
  • the have a very low power consumption of 100-s uA (without backlight)
  • wide possibilities of backlight, monochrome and also RGB
  • some types are well legible even without backlight
  • simple communication through 4/8 bit or SPI interface and newly even I2C

So far, types with up to 128x64px or 3×16 characters were available. The most recent additions to the EADOG family are bigger types with resolution of 160x104px (EADOGXL160), 240x64px (EADOGM240), 240x128px (EADOGXL240) and 4×20 characters (EADOGM204) and appropriate backlight modules EALED66x40, EALED94x40 and EALED94x67. Also these new types maintain a low profile – only 5.8 or 6.5mm with backlighting. A positivity is that even these new types are based on standard LCD controllers.

A guide at a choice of a suitable combination of display +backlight will provide you the application described in our article – Start with the EA DOG displays for free.

Detailed information will provide you the datasheets at particular types.

EA DOG displays with a minimal power consumption now available in bigger sizes - [Link]





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