by praveen @ circuitstoday.com:
We have published a digital code lock using arduino some weeks before. This one is a little different. The earlier version was based on a defined password, where the user can not change it. Moreover there was no LCD display interfaced with the project to output lock status. This project is a much improved version of the same digital code lock which comes with a user defined password and LCD display. The user will be prompted to set a password at installation. This password inputted at installation will continue to serve the lock until it is changed. The user can change the current password with a single key press. The program will check for current password and allows the user to change password only if the the current password is input correctly.
Digital Code Lock using Arduino with LCD Display - [Link]
by df99 @ instructables.com:
This is an OLED clock I built using an Arduino Micro, a tiny OLED 128×64 display using the SSD1306 controller and I2C interface, and a precision DS3231-based real-time clock module with rechargeable battery backup. It features a menu system for setting the RTC (no serial port or USB required)
DS3231 OLED clock with 2-button menu setting and temperature display - [Link]
Minimal power consumption, slim design and a big amount of available versions with multi-color backlight – these are some benefits of the EADOG series displays.
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.
Industrial applications rely on the EA DOG displays - [Link]
With the Bolymin graphic embedded module it´s possible to focus only on software development – hardware is done.
Term: 2014.11.19 10:00 – 11:30 CET
How to effectively handle human-machine interface in your applications? - [Link]
by Ioannis Kedros @ embeddedday.com:
I am very new to the multicopters hobby and a super newbie to the FPV (First Person Viewer) flying. I’ve never watch in real time someone flying through the screen but I’ve watched hundreds of videos online! The best-case scenario is to use some goggles (like the Fat Shark) in order to have a better experience. This will make you believe that you are actually inside the cockpit flying the machine. And that’s awesome!
But sometimes, even when everything looks simple this is not translated to cheap as well! A good FPV system, from the camera on the copter to the radio transmission system and the screen on the ground will cost you sometimes more than $200 (without even taking the price of the goggles into the equation). This is huge for my budget especially when the cost will be mirrored to a hobby of mine! So, I am going to try the most efficient solution!
FPV System - [Link]
by Colin Jeffrey @ gizmag.com:
Liquid Crystal Displays (LCDs) are a common and increasingly pervasive method of displaying information for everything from watches to giant TV screens. Though, like most other displays, LCDs require electrical energy to constantly display an image. Researchers from the Hong Kong University of Science and Technology, however, have produced an ultra-thin LCD screen prototype that is not only capable of displaying images without continuous power, but in 3D as well.
Energy-efficient 3D display maintains images without power - [Link]
This device was built at Recursive Software Development Labs in order to be mounted on a rally car competing in the Estonian National Rally championship.
The racing team needed help realizing a reliable measurement device which would output the currently inserted gear on a large, bright led display.
The biggest challenge to overcome was that the existing mechanical sequential gearshift would only allow enough room for a small potentiometer to be attached to its main axis, but the mounting mechanism is highly subject to vibrations, therefore after some time the readings would become unreliable or jittery.
Rally Gearshift Display - [Link]
Many homes in the United States have water that contains higher concentrations of dissolved minerals, which is called hard water. Although there is nothing toxic about hard water, it is less desirable for cleaning, it leaves mineral deposits, and it can shorten the lifetime or efficiency of equipment such as water heaters.
A water softener is a household appliance that commonly exchanges salt for some of the dissolved minerals, resulting in softer water. The salt supply is stored in a brine tank and must be refilled every month or so. If you forget to refill the tank, the water softener is rendered temporarily ineffective.
Water Softener LED Display - [Link]
The ChronodeVFD is a personal project I’ve been working on for a couple of months. It’s a wristwatch built around the IVL2-7/5 VFD display tube. I originally purchased a few of these tubes to build a standard desk clock, but after playing around with them, I realized I could probably build a wristwatch too. The tube has a number of features which make it more suited than most Soviet-surplus VFDs for this purpose.
ChronodeVFD: Wearable Electronics VFD Wristwatch - [Link]
TinyScreen is a tiny customizable display. Play games, get notifications from your phone and display useful information.
TinyScreen is the new way to visualize your environment. With a beautiful color OLED display, TinyScreen is designed to be used to display information from the TinyDuino platform, which stack together like little electronic Lego’s.
With TinyScreen there are several default apps that will work right out of the box – like a Smart Watch app, a Video player app and a video game app. You can use these default apps with NO PROGRAMMING AT ALL!
Arduino TinyScreen - [Link]