A tutorial on interfacing LCDs (liquid crystal displays) with Arduino. We take a look at libraries and the role they play…and the potential issues, errors and troubleshooting involved.
We look at several types of displays but concentrate on the 4×20 Sparkfun serial enabled LCD display.
Arduino Tutorial #4 - LCD displays, Libraries and Troubleshooting - [Link]
Arduino Day selected Rome as the official italian event, that will be held on March 29th at the triumphal Tempio di Adriano. The program of the day, developed by Officine Arduino and DiScienza, will include: an area for makers and open-source startups, free workshops for kids and free talks and demos about Arduino (click here for the program).
The aim of Arduino Day is not only to celebrate Arduino, but also to discuss (and learn) about new projects and ideas and to involve new people into the Arduino community! If you want to present your own project to Arduino Day Rome click here; we are also looking for volunteers - if you want to help us click here and you’ll have as gift an Arduino t-shirt, a bag and a discount code for our online store!
Arduino Day Roma
Saturday march 29th, 2014
venue: Tempio di Adriano, Piazza di Pietra – Roma
time: 10.30 am – 6.30 pm
Remember : the call for submission to organise the Arduino Day in your local town closes on Monday 17th of March 2014 – 12.oo CET
What do you do when you have an old printer, a portable CD player, and a handful of other electronics sitting around? Turn it into a plotter, of course.
The frame of the plotter was taken from a ye olde Epson printer, reusing the two stepper motors to move the paper along its length and width. The pen is attached to the laser head of a junked portable CD player. With this, it’s just three stepper motors that allow the Arduino control system to move the pen across the paper and put a few markings down.
The motors on the printer are, in the spirit of reuse, still connected to the printer’s driver board, with a few leads going directly from the Arduino to the parallel port interface. The motor in the CD player is another ordeal, with a single H-bridge controlling the lifting of the pen.
On the software side of things, a Processing sketch reads an SVG file and generates a list of coordinates along a path. The precision of the coordinates is set as a variable, but from the video of the plotter below, this plotter has at least as much resolution as the tip of the pen.
Filed under: Arduino Hacks
During the last months we’ve been involved with RS components in launching the “Hack the Arduino Robot” competition. It has been a bit of a special competition where people would participate by posting their ideas and a committee of experts would choose which could be the most interesting challenges for the Arduino Robot to perform.
I was part of the committee and I am pleased to say that I am not disappointed. The level of the projects is in general pretty impressive, specially considering the amount of time they had to put into making something innovative. I am really thrilled about getting to know which team will be the one voted as the final winner of the challenge, I have my favorites, but I will not say publicly.
I think everyone should look at the videos just to see that robots can be so much more than whatever it is we conceptualized them for.
Now it’s time to express your vote too: the likes of the videos on the playlist will be counted until 23rd of March 2014. The project with the most likes wins the community award!
inspiration, Milan, open design Commenti disabilitati
Valcucine is making an open-call to select 10 individuals to participate in the 6-day event during Salone del Mobile titled: The kitchen becomes OPEN! Scheduled from 6 to 11 April 2014 at Valcucine showroom in the heart of Milan, the workshop sees the participation of 10 designers selected following a call for ideas directed to planners, designers, makers, developers and programmers working in the field of design, as well as to students and enthusiasts at which time they will develop suggestions and new interactions in which to enhance the philosophies that have been employed in the realization of the Meccanica kitchen framework.
They will work alongside the dotdotdot design studio and team of experts. A set of meetings and debates are planned during the week which will be open to the public and to which important guests will be invited to share their knowledge, skill and experience: Massimo Menichinelli (open design facilitator), Enrico bassi (Fablab Torino coordinator, Stefano Maffei (professor at Politecnico Milano), Giulio Iacchetti (designer), Dario Buzzini (IDEO new york) and Zoe Romano (Digital Strategy and Wearables at Arduino).
The executable files of the project will be released in the open source mode, under the Creative Commons CC by–nc–sa license, with the permission to distribute, modify and create projects based on the original, except for business purposes, recognising the author’s paternity of the project.
The resulting projects will be exhibited from the evening of friday, April 11th at 6PM to sunday, April 13th, 2014.
Deadline call: 19 march 2014 - All the information regarding the competition and the workshop: demode.it/openkitchen
[Dustin Evans] is a big fan of the recent Avengers movies — heck, we are too! So he decided to make this awesome Tesseract Case prop replica!
Tesser-what? A tesseract, or cubic prism is a geometric shape that is technically a four-dimensional hypercube — in the Avenger’s movie, it is an incredibly powerful and unstable alien energy source.
To make the replica, [Dustin] picked up a cheap aluminum tool case from the hardware store, took some measurements and began designing the inside of it using SketchUp. He’s crammed in an Arduino with a spectrum shield, a BlueSmirf Bluetooth modem, a Raspberry Pi, a 7″ LCD, speakers and an amp, a WiFi card for the Pi, and a few strips of Neopixels. It is running Raspbian with a stand-alone version of XBMC, which means using AllCast he can wirelessly control the box from a phone or tablet — now all he’s missing is a mini-generator that can put out a few million watts!
This thing would go great with our very own Thor’s Hammer! Oh — and another fun tidbit — one of our writers, [Me actually], worked on designing and building a manufacturing cell which makes the Rimowa suitcases, which is the brand that was used in the movie!
Filed under: Arduino Hacks, Raspberry Pi
[Martin Raynsford] sells lasers, and laser cuts stuff for a living — we’re kinda jealous. Anyway, laser cutters from China are great, but sometimes lack certain functionality, so he decided to add his own z-axis feature!
The main laser cutter he uses has a very slow z-axis, and it’s also difficult to control — a job can’t be paused to adjust the height offset, the datum must be set every time manually, and you have to be in the very top level of the menu in order to do anything with it! With this in mind, [Martin] decided to add his own z-axis control, completely separate from the laser’s on board control system.
He’s using an Arduino Pro Mini to control the stepper motor with PWM. His new controller has four buttons — fast and slow, in each direction. He’s used the original end stops to protect the axis, and he’s also added a feature to set a datum by holding down both fast and slow buttons at the same time. It ended up being a very cheap upgrade to his system, and he’s also shared the source for anyone looking to recreate it.
Filed under: Arduino Hacks, laser hacks
On Adafruit Learning System there are a lot of cool tutorials and this particular one is based on the Arduino Micro used to upcycles old Next keyboards:
Ladyada and pt had an old NeXT keyboard with a strong desire to get it running on a modern computer. These keyboards are durable, super clicky, and very satisfying to use! However, they are very old designs, specifically made for NeXT hardware, pre-ADB and pre-USB! That means you can’t just plug the keyboard into an ADB or PS/2 port or PS/2 to USB converter (even though it looks similar). In fact, I have no idea what the protocol or pinout is named, so we’ll just call it “non-ADB NeXT Keyboard”
Click and follow the steps to make your own.