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3 Jun 2014


OLED Watch v4.2 @ Walltech. John writes-

I just finished writing up my OLED Watch project on my website! I took loads of great pictures, and explained the whole thought process of the project, as well as the hard ware and software behind it! I’ve officially released the board files and the code under the appropriate creative commons licenses, and just wanted to let you know that it’s all now online on walltech.cc! You guys have been strong supporters of my projects and really thank you for that.

The open source hardware and software OLED Watch – [Link]

1 Jun 2014


Displays called as “Electronic ink” or “e-Paper” are a real electronic form of a paper.

For those of you, who are not familiar with this type of displays yet, we´l mention, that it´s a so called electrophoretic display, i.e. Display containing white particles in microcapsules dispersed in a thin layer of a dark high-viscosity liquid. These particles can be moved or turned by a short voltage impulse, what will cause a given pixel to appear as white. Similarly an impulse of a reverse polarity will cause a given pixel to appear as black or it can also be grey (usually 4 shades of grey). High viscosity of a liquid causes that microparticles remain their position practically forever (years). That means, that this type of displays only need an electric energy to change a displayed content (!). In other words it´s an ideal display for battery powered devices. From some point of view is the behavior of ePaper display similar to bistable (latching) relays. A display is reflexive, i.e. doesn´t require backlight but for a good legibility at least a low ambient light is necessary. It´s advantageous that the display is easily readable even on a direct sunlight. A charm of ePaper display is also in the fact, that a displayed content is really similar to that sketched/ written on a paper.  The first type of ePaper displays in our offer is a 2“ (172*72 px) display from company Electronic Assembly EAEPA20-A. The module is only 1.18mm thin and it only needs a few additional components for its operation. Power supply is single – 3,3V (no other voltages are required) and the display contains a standard controller SSD1606 with a 4-wire SPI interface.

Detailed information will provide you the EA_ePaper datasheet. Upon request, company Electronic Assembly is able to produce any ePaper display up to 300×300 mm size (MOQ 1000 pcs).

Display displaying without a power supply is available even for you – [Link]


21 May 2014

Luca Dentella has published his latest project: BlueMatrix. [via]

It’s a portable LED matrix display based on Arduino Uno, powered by a Lipo battery and connected via Bluetooth to a personal computer or an Android smartphone. I’ve also developed the controlling app for Android, available on Google’s PlayStore.

All the schematics, source files, inkscape files for the enclosure etc., are available on my blog and in my GitHub repository.

BlueMatrix – Bluetooth controlled LED matrix – [Link]

10 May 2014

Detailed look at methods for driving LED matrix displays, including simple LED displays and full-colour video screen modules.

Driving LED matrix displays with an FPGA – [Link]

7 May 2014


Raj of Embedded Lab has a series of chipKIT tutorials. This 5th project will show you how to build a digital stopwatch on seven segment LED display with the chipKIT Uno32:

In this project, we will use the chipKIT Uno32 board to build a digital stopwatch capable of timing minutes, seconds, and 1/10th of seconds, and with a basic start and stop control feature. A MAX7219-driven 8-digit seven segment LED display is used to display the time elapsed. The Reset switch on the Uno32 board will be used to reset the current time back to 0 when the stopwatch is stopped.


chipKIT Project 5: Digital stopwatch on seven segment LED display – [Link]

30 Apr 2014


by Kalle Hyvönen:

I needed a display for a project of mine and was just going to use a regular HD44780 -based text LCD display, until I spotted some very neat looking TINY OLED-displays from eBay.

The displays are monochrome 128×32 pixel displays with a 4-wire SPI bus and they are around 30x11mm in size (the actual display area is under an inch diagonally!). The exact type of the displays is UG-2832HSWEG04. I found a datasheet for the displays and a datasheet for the actual display controller (SSD1306) and they seemed easy enough to use so I ordered a two of them for just $13.

Using a neat little OLED-display with an Arduino – [Link]

28 Apr 2014


Here’s Oscar Liang another Arduino GPS project, he writes:

Garlow stands for GPS Arduino Rechargeable Logger OLED Watch. The device gives GPS information which is logged on SD card and shown on a OLED display. It can be carried as a watch or simply used as a GPS data logger. The whole system is based on Arduino Nano, with a Lipo power management module which enables USB battery recharge.

A small GPS Arduino watch/clock – [Link]

26 Mar 2014

The MicroView is the first chip-sized Arduino compatible that lets you see what your Arduino is thinking using a built-in OLED display.

You’ve never seen an Arduino™ compatible like this. With a built-in OLED (Organic Light Emitting Diode Display) you can see what your Arduino is thinking without having to connect it to your computer.

No more cryptic “Hello World” LED blink sequences or shoehorning oversized displays onto your tiny Arduino™. Development is much easier when you can see what’s going on.

MicroView: Chip-sized Arduino with built-in OLED Display! – [Link]

19 Dec 2013


Software simulator for Electronic Assembly display EA DOG series will bring you a clear image about possibilities of this favorite series. 

Usually, when we start working with some monochromatic display with a color backlight, we have to imagine which combination of display/ backlight would suit us the best. It isn´t hard but for sure even here is valid, that “it´s better to see once than to hear three times”.

For this purpose will serve well a simple application StartDog, in which you can “try” for free various EA DOG series displays in combination with various color backlight (including RGB). This application will simplify you choice of a display without useless expenses. Besides a possibility to choice types themselves (with various resolution), it´s also possible to choose 4 basic kinds of “glasses”: STN positive Y/G, STN negative blue,  FSTN positive and FSTN negative.
Application StartDog also cooperates with the EA9780-2USB development board and so the text or image displayed on your PC can be seen also on the EA DOG series display.

Detailed information will provide you the EA DOG flyer and the EA9780 user manual.
In case of interest in the EA9780 development board abd the EA DOG series displays, please contact us at info@soselectronic.com.

Start with the EA DOG displays for free – [Link]

14 Dec 2013


fowkc published his latest project the mains frequency display:

I wanted to make a display that could show the mains frequency to 3 decimal places. I’d be using the same seven-segment display modules that I used in my UNIX clock, so all I had to do was design the part that would work out the frequency.


Mains frequency display – [Link]





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