Vendredi, Avril 18, 2014 - 07:00Automatic chessboard using Raspberry Pi #piday #raspberrypi @Raspberry_Pi
Vendredi, Avril 18, 2014 - 06:443D Vector Graphics on a WWII Radar Tube with Arduino
Vendredi, Avril 18, 2014 - 06:00LEGO Bookreader: Digitize books with mindstorms and Raspberry Pi #piday #raspberrypi @Raspberry_Pi
We wanted to develop a book digitizer that could read books aloud. We were fascinated by Google’s Google Books project, and thought “Why couldn’t we do this at home?”
In our first attempt, we tried a proof of concept where we built the BrickPi Bookreader to read a Kindle aloud.
We redesigned the Bookreader to read real paper books. In our example, we digitize a paper copy of Horowitz and Hill’s The Art of Electronics.
How it Works
The Bookreader flips through the pages of a book, taking pictures of each page, and then turns each picture into a text document.
First, the bookreader prepares a page to turn by rotating a Lego motor. Gravity keeps just enough friction on the book page to inch the page forward. Next, a Lego arm beam swings around, forcing the page over.
After a new page is turned, the Raspberry Pi camera takes an image of the new page in JPEG format, and saves it to file. Using open source Optical Character Recognition software on the Raspberry Pi, the BrickPi turns the page image into text.
Finally, the Pi saves the text. Now we’ve digitized the page, and you have the start of your book. Just for fun, in our example we use some free text-to-speech software, and the Raspberry Pi reads the book out loud over some speakers we attached. Once the page is read and stored, the Raspberry Pi, through the BrickPi, turns to the next page of the book.
Each Friday is PiDay here at Adafruit! Be sure to check out our posts, tutorials and new Raspberry Pi related products. Adafruit has the largest and best selection of Raspberry Pi accessories and all the code & tutorials to get you up and running in no time!
Vendredi, Avril 18, 2014 - 06:00Adafruit Bitcoin report #bitcoin #makerbusiness
We thought it could be interesting to someone out there to share how the orders placed at Adafruit using bitcoin was going. We launched mid November 2013 and the average amount of total bitcoin orders per day was about $1,572.14 USD, with an average order size of $231.20 USD. Peak orders was around 100/day using bitcoin, in the last 30 days it’s about 5 to 10 orders / day using bitcoin and average amount per order being $170.86 USD. Other online stores in the maker world started taking bitcoin too, if you have some coins to spend, head on over to EMSL (Evil Mad Scientist). The coolest part of this experiment for us was an Adafruit community member built a bitcoin miner and then used the coins they mined to buy Adafruit electronics with the mined coins. More bitcoin news here…. Oh, would we add bitcoin now if we didn’t have it, based on what we know now? Sure, the big spend-coin-rush is over, glad we added it when we did!
Vendredi, Avril 18, 2014 - 04:00Interactive Gloves Turn Gestures into Music
[Imogen Heap] is a UK-based musician who is trying to change the way we think about making music. She’s been working on a pair of gloves called the Mi.Mu, and they’re getting close to production.
In the included interview she explains that while computers and technology have brought many new advances to music, twiddling dials and pushing random buttons “is not very exciting for me, or the audience”. With these gloves, the artist becomes one with the music and interaction.
The current iteration of gloves use flex sensors along each finger to determine the movement (along with motion sensors for other gestures). She’s been through many designs and hopes to integrate e-materials into the next — using the actual glove as the sensor (not physical flex sensors).
She’s been working with both developers and musicians mapping the various motions of the gloves to music which makes sense in an intuitive way, and it’s very unique to see in action.
Filed under: musical hacks
Vendredi, Avril 18, 2014 - 01:00The Persistence of Jumping Rope
[Antonio Ospite] recently took up jump rope to increase his cardio, and also being a hacker decided to have some extra fun with it. He’s created the JMP-Rope — the Programmable Jump Rope.
He’s using the same principle as a normal POV (Persistence of Vision) display, but with a cool twist. He’s managed to put the microcontroller (a Trinket) and battery into the handle of the jump rope. Using a slip ring system, the RGB signal gets passed to the rope, which contains the LEDs. It’s a pretty slick setup, and he’s written another post all about how he did the hardware.
To create the images for his JMP-Rope, he’s outlined the steps to a successful POV image on his blog. These include re-sizing the image to a circle (duh), reducing the color palette, and then performing pixel mapping using a discrete conversion (from polar to Cartesian coordinates). After that it’s just a matter of representing your new-found pixel map in a 1D animation, played column by column. [Antonio] stores these frames on the micro-controller as an RLE (run length encoded) indexed bitmap.
Stick around to see how he made it, and some other cool examples of what it can do!
The resulting images from his JMP-Rope are pretty impressive — it almost looks like Firefox was made for a POV display!
Filed under: led hacks
Vendredi, Avril 18, 2014 - 00:11Completed Cupcade – The mini Arcade with a Raspberry Pi @Raspberry_Pi #raspberrypi
egutting writes in…
Just wanted to let you know I completed mine and it’s in working order. Didn’t have any problems at all as the directions were great and had experience with this “type” of case with the ice cube clock.
NEW PRODUCT – Cupcade: the Raspberry Pi-Powered Micro Arcade Cabinet Kit – Beta: Never be bored again with an adorable little arcade cabinet you can fit in your bag! This Raspberry Pi-powered kit combines our sharp PiTFT 2.8″ display, mini thumbstick, and mini arcade push buttons and a whole bunch of components to create the most adorable MAME cabinet in the known universe.
Comes as a big kit with lots of parts including all electronic components, the laser cut case, power adapter, and a pre-burned SD card that is plug-and-play ready. You provide a Raspberry Pi model B, a soldering iron, solder, wire, basic electronic hand tools, tape, etc. This is the beta kit, which works great but is a little advanced and not good for beginners! We’ll be planning out a version with more of the circuitry pre-built in the future. For now we only recommend this project for people who have soldered before and even better, have a little Raspberry Pi/Linux hacking under their belt in case some configuration-file-editing is required. Give yourself a nice long Saturday afternoon to put together (about 4-6 hours altogether).
We played a bunch of memorable old arcade games, like Ms Pacman, Galaga, Donkey Kong, Arkanoid, DigDug, etc with squee success but some games that are more advanced might be too slow even with overclocking the Pi. There are four buttons total, two next to the joystick for “fire” and “jump” and two in front for “coin” and “start”.
Many details stand out here that show the love and care PaintYourDragon put into this kit.
- First: you can configure it for either vertical (Ms Pac-man! Arkanoid!) or horizontal screen (Joust! Qix!). The controls can be set to either joystick-in-center or to the side. We include plastic for both configurations just pick which you want during construction.
- Second: The SD card comes with a text-based MAME ROM selector screen that works in either V or H mode, with nicely printed out names and joystick/button selection.
- Third: Pressing the two front buttons for three seconds simulates the Esc key, so you can quit games and safely shut down the Pi without use of a keyboard.
- Fourth: To load new ROMs, simply plug in the SD card into any computer and drag the zipped up files into the directory, no need for WiFi, logging in or any other nonsense!
- Fifth: What’s gaming without the noise? There’s a mono speaker and audio amp so you can relive all the bleeps
Don’t forget, a Raspberry Pi Model B is NOT included!
Jeudi, Avril 17, 2014 - 23:00DIY Replica of Joffrey Baratheon’s Crown
Joffrey Baratheon may be a despicable character, but the king does have nice threads. He wears richly embroidered tunics and an intricate crown – it’s understandable if you want to dress like him. Instructables user xeijix came up with a 3D model to print the crown on a PP3D printer. The printer worked on one half of the crown at a time; here’s what he did to assemble them:
After removing the scaffolding, I needed to sand the the crown a bit.
The crown from the show had a lot of textured marks on the crown, I opted not to add those textures. For my purposes, it wasn’t that important.
After sanding, I glued the pieces together with superglue.
I painted the crown with a can of Krylon gold spray paint.
After it’s painted, you could add pre-made jewels from the craft store or you could cast your own with resin and pigment.
Read more at Instructables.
Jeudi, Avril 17, 2014 - 22:06NEW PRODUCTS – SMT Test Socket – TSSOP-16 and SMT Test Socket – Medium SOIC-8 (200mil)
You know those ZIF sockets we have for DIP chips? Well these are just like that but for SMT parts!
NEW PRODUCT – SMT Test Socket – TSSOP-16: Now you can program and test out your favorite new parts in TSSOP packages. This test sockets is good for any 4.4mm / 0.147″ wide TSSOP/SSOP with up to 20 pins. Simply press down on the top, place the chip in carefully and then release to latch the chip in. The chip is held securely against gold ‘fingers’ in the socket. Please note the body of the chip you’re trying to use and read the datasheet diagrams carefully – a chip with a body wider than 4.4mm not fit!
The socket is soldered onto a pair of PCBs that turn it into, essentially, a 20 pin DIP with 0.6″ spacing that can be breadboarded fairly easily.
NEW PRODUCT – SMT Test Socket – Medium SOIC-8 (200mil): And you can program and test out your favorite new parts in SOIC-8 or smaller packages. This test socket is good for any SOIC/SOP “Medium” chip in a 200mil wide body that has 8 pins. Simply press down on the top, place the chip in carefully and then release to latch the chip in. The chip is held securely against gold ‘fingers’ in the socket. 150 or 300mil wide chips will not fit, but we do have other sockets for narrow/wide SOIC chips.
The socket is soldered onto a pair of PCBs that turn it into, essentially, a 20 pin DIP with 0.6″ spacing that can be breadboarded fairly easily.
Both of these test sockets are high quality, Japanese construction from Yamaichi
Jeudi, Avril 17, 2014 - 22:00Interactive 3D Projection is Foggy At Best
Have a projector and a smoke machine handy? You might want to give this fog projection thing a shot! It’s called the MisTable and it’s a three-dimensional playground for interactive manipulation of images.
It’s a project by Bristol Interaction and Graphics group of the University of Bristol, and it’s an interesting twist on 3D projection. They’ve created what they call the MisTable which features a smoke machine, “smoke screens”, and three projectors. What it results in is an interactive table for two people. The tabletop surface is a display, as is the see through fog in front of each person (the “fog screens”).
While it is fairly easy to understand and explain, there’s a handy diagram after the following break showing how the system works. Our question is, when are one of you guys or gals going to try making one?
For a much clearer hologram-esq projection, there’s always glass like in the Pepper’s Ghost Illusion! But we have to admit being able to reach through the screen with the MisTable is pretty neat too.
Jeudi, Avril 17, 2014 - 20:59Several Techniques to Produce Laser Cut Helical Springs! #3DThursday #3DPrinting
Fascinating tutorial documents a few routes to produce working slinkies, from 3D printing to laser-cutting acrylic , and cardboard shipping tubes:
I created the helical spring GIFified1 [below] by using the Trotec rotary attachment in a Speedy 300 to laser cut a 3D printed PLA plastic tube.
It is one of many helical springs I’ve laser cut over the past three months2. The springs vary in design and material – so far, I have used 3D printed PLA, clear acrylic, and cardboard shipping tubes. Take a look at the [top] picture for a sneak peak of the whole collection.
The 3D Printed / Laser Cut Spring concept is pretty cool, I think, and a decent lead in because it’s recognizable, but definitely not what I’m most excited to show in this Instructable. So before I lose you, scroll down to Step 1 and check out the wave springs. Lots more pictures and videos after that. Eventually, I’ll give an explanation of how they are made
Jeudi, Avril 17, 2014 - 20:50NEW PRODUCT – PrintrBot Simple Metal 3D Printer – Black – Assembled
NEW PRODUCT – PrintrBot Simple Metal 3D Printer – Black – Assembled: New from Printrbot, the Metal Simple is a brand new rock solid, all metal, fully-assembled Printrbot Simple! As opposed to the Printrbot Simple Kit, all of the laser cut wood parts have been replaced by rock solid metal and assembled. In fact, the total number of parts have been reduced to just a fraction of the wooden model. The all metal construction combined with a GT2 belt pulley system produces a 3D print that rivals those of other manufacturers which cost thousands more!
The Printrbot Simple is an exercise in 3D printing minimalism. It includes only what is needed to get started in the world of 3D printing. With the All-metal Printrbot Simple you’ll have a fully-functioning 3D printer that weighs only 12 lbs and fits nicely on your desk!
Jeudi, Avril 17, 2014 - 20:003D-Printing Product DIY Hacking Off-the-Shelf Products with 3D Printed Parts @ Takt Project #3DxProductDesign #3DThursday #3DPrinting
3-PRING PRODUCT is a new D.I.Y. idea proposal that can change the usage of the product, or pursue user’s own better usability by adding 3D-printed parts to ready-made products. This time we used ready-made products of MUJI as an example.
Just like ‘Sampling Techniques’ in music industry which creating a new track by quoting tracks or sounds in the past, create an original product with adding own made parts while quoting ready-made product. In this instance, We treat a 3D printer as a music instrument that can enhance the prospect exponentially for this ‘sampling’ process.
With making joint parts for plastic product, or parts which utilized size that is peculiar to ready-made product by 3D printer, it expand the possibility of incubate a new kind of customizing at this 3D printer generation.
From this perspective, the products in stores are not so much completed product but semifinished product, in another words, we can retake them as a material for new creation. This kind of changing perspective is that we wanted design through this project, and we also think there are possibilities for new creation regarding products in intermediate region where connect between ‘consumer’ and ‘manufacture’, not a choice between the two of them….
Jeudi, Avril 17, 2014 - 19:44Women Techmakers: Make your passion – features @adafruit Ladyada!
We’re all driven by passion. Hear from innovative women leaders as they share their personal stories, solutions, and impact on the technology industry. Featuring:
Suzanne Xie (Founder and CEO of Hullabalu)
Jeannie Yang (Chief Product and Design Officer at Smule)
Kelly Ellis (Software Engineer at Google)
Brynn Evans (Design Lead at Google)
Limor Fried (Lead Engineer and Founder at Adafruit Industries)
Ashley Gavin (Director of Curriculum at Girls Who Code)
Shannon Spanhake (Deputy Innovation Officer for the City of San Francisco)
Joanna Smith (Developer Programs Engineer at Google)
Mary Lou Jepsen (Head of Display Division at Google[x])
Megan Smith (Entrepreneur at Google[x])
Jay Wong (UI Designer and Prototyper at Google)
Bandana Malik (Student at The Flatiron School)
Jenny Young (Owner of Brooklyn Robot Foundry)
Heidi Zak Spector (Co-Founder at ThirdLove)
Aminatou Sow (Founder of Tech LadyMafia)
Cassandra Dixon (Support Engineer at Fastly)
Natalie Gordon (CEO and Founder at BabyList)
Jeudi, Avril 17, 2014 - 19:30Iron Man Mk 3 by RoboGenius #eggbot
Jeudi, Avril 17, 2014 - 19:30What happens if you expose a Peep to vacuum?
And now you know
Jeudi, Avril 17, 2014 - 19:10Updates – Alternatives to ULINE shipping supplies – shipping boxes, packing materials and mailing supplies #makerbusiness #manufacturing @uline
Some maker biz folks sent some suggestions for ULINE packaging alternatives, here are some more resources!
- Alternatives to ULINE shipping supplies – shipping boxes, packing materials and mailing supplies.
- Shipping Supplies Cheaper than Uline.
- Shipping supply alternatives to Uline?
- FIRST PACKAGING OF CHICAGO.
Here are our reps for the companies we use.
Do you have a favorite supplier? Remember, post up in the comments here or on Google+ !
Jeudi, Avril 17, 2014 - 19:0060 NeoPixel Ring Camera Mount
You can build this massive camera light with our 60 NeoPixel ring. This camera ring update works with ANY DLSR and ANY lens.
Perfect for macro photography, this light gives a signature ring around your eyes, making an awesome lighting effect.
A 3d printed light ring adapter holds the electronics and mounts to any dslr hot shoe.
Check out the circuit diagram and full tutorial on The Adafruit Learning System
Jeudi, Avril 17, 2014 - 19:00Using Non-Crappy Software With The Da Vinci Printer
The Da Vinci printer from XYZprinting is turning out to be one of the best buys in the world of cheap, consumer printers. Sure, it uses chipped filament, but that’s an easy fix for anyone who knows what a .hex file is. And yes, the Da Vinci host software is a mess of proprietary garbage with limited functionality, but [Mark] has figured out a way around that.
When [Mark] received his Da Vinci, he immediately started snooping around inside the printer’s guts, like any good tinkerer should. He found an SD card holding all the sample prints that ship with the printer, all in a convenient Gcode format. Inside these sample .STL files were all the calls you would expect – setting the temperature, changing the layer height, and all the other good stuff you’d find in any other RepRap.
With a little bit of modification to .STL files generated by any slicing program, [Mark] isn’t limited any more by the terrible host software that ships with the Da Vinci. Combine this with the ability to reset the chip inside the filament cartridge, and [Mark] has a printer at least as functional as any open hardware model.
Filed under: 3d Printer hacks
Jeudi, Avril 17, 2014 - 19:003D Printed Frog Dissection Kit – Printed Curriculum Unit #3DxEducation #3DThursday #3DPrinting
After the MakerBot Frog Dissection Kit launched on Thingiverse in early March, a number of variants were produced by the community including the Flexy-Frog (video above) printed by Gyrobot. It was printed at 80% scale in 1.75mm using Filaflex from Recreus. “Adds that extra bit of flexible realism.” Check out details from the original kit launch below!
The MakerBot Frog Dissection Kit is the first 3D printable curriculum unit for teachers and their students to download and 3D print in the classroom. Now you can teach students about basic anatomy without having to deal with the yuck factor of dissecting a real frog!
This Frog Dissection Kit includes a lesson plan for teachers, digital files to 3D print a large, life-size frog body, and six 3D printed organs that fit together like puzzle pieces. Download the files, let us know how it prints, and stay tuned for more enriching educational experiences from MakerBot Academy.
Every Thursday is #3dthursday here at Adafruit! The DIY 3D printing community has passion and dedication for making solid objects from digital models. Recently, we have noticed electronics projects integrated with 3D printed enclosures, brackets, and sculptures, so each Thursday we celebrate and highlight these bold pioneers!
Have you considered building a 3D project around an Arduino or other microcontroller? How about printing a bracket to mount your Raspberry Pi to the back of your HD monitor? And don’t forget the countless LED projects that are possible when you are modeling your projects in 3D!
The Adafruit Learning System has dozens of great tools to get you well on your way to creating incredible works of engineering, interactive art, and design with your 3D printer! If you’ve made a cool project that combines 3D printing and electronics, be sure to let us know, and we’ll feature it here!