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July 28, 2010

Online course from O'Reilly on Processing and Arduino

Processing and Arduino

O'Reilly Media (the publisher of MAKE), in partnership with creativeLIVE, has just announced a new online course, Processing and Arduino in Tandem: Creating Your Own Digital Art Tools:

Create your own drawing and animation software-and learn basic programming and electronics skills at the same time. This engaging 5-week online course introduces you to two simple tools: Processing, a programming language for visual thinkers, and Arduino, a hardware platform for working with electronics. You'll learn how to use these tools together to build something useful right away.

You don't need programming or electronics experience to get started. Processing is easy to learn, and you'll get to know Arduino with a starter kit. You'll also have direct access to the instructor via online Q&A; during the workshop. And here's the best part: the courses are free. It's a fun and inspiring way for designers, artists, and beginning programmers to learn basic graphics programming.

The course is free if you watch it live, and the video of the course is available for purchase ($89 for all five sessions, but the price is reduced to $49 until September 28, 2010). There is a project kit available for sale as well.

Schedule: Tuesdays @ 3 p.m. Pacific Time
August 31 - September 28, 2010
Each session is 90-120 minutes

Online Course: Processing and Arduino in Tandem

Modular stackable Arduino enclosure

Spotted in the MAKE Flickr Pool, this 3D printed set of chassis components from user nathanmatsuda:

So far I've made end panels for the duemilanove and the ethernet shield. Next up- a new top piece that'll have an opening for the prototyping shield. Also planning a top piece for the touch shield (but I don't have one of those yet).

The parts are available in his Shapeways shop.

Digital paint roller

It's a prototype called txtBOMBER, by Felix Vorreiter. It has seven solenoid-actuated pens and an Arduino for a brain. [via Dude Craft]

July 27, 2010

Nexus One/Arduino SmallSat satellite test launch video

photo: jurvetson

Matthew Reyes sent word that the RocketMavericks launch event on Saturday in Nevada's Black Rock desert was a resounding success. Traveling 28K feet aboard James Dougherty's Intimidator-5 rocket was a payload consisting of a Nexus One/Arduino SmallSat. Matthew and his cohorts Chris Boshuizen & Will Marshall are championing the use of smartphone components to lower the cost of deploying a satellite and expect it to become even more affordable with every revision.

Civilian space exploration is starting to take off. In fact, MAKE: v24 will be our "DIY Space" issue, so if you're working on an interesting project you think we should see, feel free to post a link in the comments.

Here's a video with Matthew explaining the evolution of the SmallSat shot earlier this year at Maker Faire 2010:

July 26, 2010

Tactile display for light and shadow

I went down to the LA Convention Center yesterday for the first day of SIGGRAPH, the annual computer graphics convention. Once of the coolest things I saw in the Emerging Technologies area was this tactile display for light and shadow called Touch Light Through the Leaves. It was created by Kunihiro Nishimura who says:

Touch Light Through the Leaves consists of a camera and 85 vibration units. The camera detects light and shadow, and the vibration units, controlled via image processing and vibration motors, change those inputs into tactile sensations. The display is palm-sized, so it can be used anywhere under various conditions.
People who have experienced this display report weird, new sensations. In their daily lives, light and shadow are perfectly ordinary, but when they feel light and shadow directly on their palms, they are "touched" by light for the first time.

I tried it out and agree that it's an interesting sensation to feel light and shadow through the sense of touch. Next up, I'd like to walk through the dappled light of a forest trail while wearing a full-body tactile display leotard.

They had a few versions on display, including this lower resolution unit which runs off of a couple of Arduino Nanos and has pager motors inside drinking straws acting as actuators.

July 23, 2010

Delta robot controlled by an Arduino, Wii nunchuck

I love how the platform at the top of this robot always stays level. Nicely done, guys!

Delta Robot using Wii and Arduino

July 20, 2010

Nixie-tube sudoku board

From Trashbear Labs. Arduino-controlled, incorporating a whopping eighty-one tubes. More details available in this follow-up post. [via Hack a Day]

More:

July 15, 2010

Beginner's guide to making an Arduino shield PCB

I like the look of this guide to designing your own Arduino shield. Steps you though EAGLE CAD layout to PCB fabbing in great detail.

July 14, 2010

Prototype your microcontroller project with Toolduino

MAKE subscriber Michael writes in to tell us about Toolduino, a GUI program that lets you access all of the pins on your Arduino through your computer. To use it, you have to flash a special sketch to your Arduino that implements the Firmata protocol, which allows a connected computer to control all of the pins on the microcontroller without reprogramming it. Then, all you have to do is run the Toolduino program to start interacting with things connected to the 'duino. This should help you get the interaction parts of your project worked out quickly, after which you can migrate to an Arduino sketch, or just stick with Firmata and write your program in Processing.

2d light follower uses Wiimote infrared camera

Brian Dwyer built this nifty 2-axis light follower using the infrared camera from a Wiimote, a couple of servos, and an Arduino. It looks to be a proof of concept project so far, however I like where they are headed, and appreciate how the author was able to combine commodity hardware with a simple 8-bit microcontroller to do a fairly advanced task.

The source code is available here, and requires the Pixart/Wiimote sensor library by Steven Hobley.

[via tinker.it]

July 13, 2010

New in the Maker Shed: PowerSwitch Tail

The PowerSwitch Tail allows you to safely control a standard wall outlet (120VAC) device with almost any micro controller. Simply connect 2 wires and your ready to go! It's perfect for use with an Arduino. Just connect 1 wire to ground, and the other to a free pin on the Arduino (or on almost any other micro-controller) and now you can safely control most standard 120VAC 3-prong outlets.

July 12, 2010

New in the Maker Shed: Bulbdial Clock kit

The Bulbdial Clock kit works like an indoor sundial, but with three shadows of different length. You tell the time just like you do on a normal clock, by reading the positions of the hour, minute, and second hands.

This clock kit comes complete with three custom circuit boards, 72 ultrabright LEDs, pre-programmed ATmega168 microcontroller with Arduino bootloader, tactile button switches, aluminum standoffs, 20 ppm quartz crystal, custom clock face, gnomon spike, universal-input plug-in power supply, stainless mounting hardware, plus the resistors, capacitors and other little parts needed to build the Bulbdial clock. We even included a laser-cut acrylic case!

Features

Three custom circuit boards

Custom laser cut case

72 ultrabright LEDs

Pre-programmed ATmega168 microcontroller with Arduino bootloader

Tactile button switches

Aluminum standoffs

20 ppm quartz crystal

Custom clock face

Gnomon spike

Universal-input plug-in power supply

Stainless mounting hardware

And all the resistors, capacitors and other little parts needed to build the clock

Bulbdial Clock kit in the Maker Shed

July 11, 2010

Controlling a Lego robot with an Arduino

MAKE subscriber Clinton Blackmore of Alberta wrote in to share a project he's working on: NXT I2C Devices for Arduino, which aims to let you control Lego actuators and sensors using a Mindsensors motor multiplexer (NXTMMX) controlled by an Arduino -- no NXT brick required.

Oh man. I love the NXT, but I really like the possibilities that this affords. The NXTMMX allows you to connect two LEGO motors to a device that issues I2C commands, and gives you one more port to plug in another NXT device. There is a good tech spec documenting the commands, so there is no reason it wouldn't work with your microcontroller of choice, by merely connecting four wires and supplying power with a battery pack.

July 9, 2010

Panobotor, a DIY panoramic and orbital panorama machine

Mhepekka created this excellent looking Panobotor robot, to take panoramic and orbital and photos using a DSLR camera. The kitchen and forest samples look astounding! They used an Arduino, a couple of servos, and some off-the-shelf hardware to build the project. Source code and schematic are included, however it looks like you are on your own for choosing the construction materials. [via tinker.it]

Arduino-enhanced pinewood derby car

So, it was pinewood derby time for the Cub Scouts again. My son's pack has a race for the adult kids too. I had been plotting my car since last year's races. I wanted to really light the thing up. Last year I had working head and tail lights, but this time I wanted bigger and better. I was just not sure what form it would take. I had considered many options. The most predominant idea was using an accelerometer to change the light settings based on force. The problem was that I wanted the lighting to stay very minimal until race time so that the surprise factor would be maximized. I was leaning heavily towards the Arduino Pro 3v due to it's nice and tidy size. After more thought I started heading away from the accelerometer and started thinking about using an XBee to control the Arduino remotely. Then while shopping at Sparkfun one day, I stumbled upon the Funnel IO board and that locked the plan together.

Funnel is an Arduino based board, with the added benefit of having an on board Xbee socket. Plus it is tiny, has a 3.2v line in (for LiPo), and a LiPo charger onboard too.

Eagle boards, schematics and Arduino code on the builder's project writeup. (Note: He calls his car the Joule Thief, but it's not a joule thief.)

More:

July 8, 2010

Reprogrammable reverse geocache puzzle with camera

One of the many very cool things about my job is getting to watch ideas evolve in the community over time. Since I first saw Mikal Hart present the original reverse geocache puzzle at Dorkbot Austin more than a year ago, we've seen a number of cool variations and improvements on the theme (see the "More" block, below). This latest twist, from Donald Papp, adds a couple of cool features including reprogrammable "solution" locations, allowing the box to be used over and over again, specifically with the intent that, in an analogy to regular geocaching, it will have multiple users over its lifetime. The idea is that you can solve it, reprogram it, and then pass it on to somebody else. Donald has also added a camera to the box that records a photo every time it is activated for a "hint," making the journey of the box and its user(s) self-logging. [Thanks, Donald!]

More:

Why is Arduino a hit?

This fascinating Gadget Lab post examines the Arduino phenomenon and compares it with more robust (but far less ubiquitous) alternative BeagleBoard, with commentary by Make: Online senior editor Phil Torrone. Be sure to read the comments.

Readers: Do you use an Arduino or some other other form of microcontroller -- or even a mini PC like the Beagle? What do you use it for and why did you choose that platform? Leave your thoughts in comments.

[Arduino image by linux-works from the MAKE Flickr pool.]

July 7, 2010

How-To: Bronze bell clock with Arduino

Instructables user 5Volt writes:

This little rig infact interfaces via USB to your PC clock and generates hours and half hours dings on a real bronze bell. Great stuff to bring into your office and surprise then amuse then annoy your helpless friends.

Realtime video tracking with a pan-tilt camera

UMass Amherst hardware hackers Blake Foster, Rui Wang, and Erik Learned-Miller built this articulated realtime tracking rig using a GPU, Arduino, and FPV Pan-Tilt camera. [Thanks, Rui!]

The human eye is amazingly adept at tracking moving objects. The process is so natural to humans that it happens without any conscious effort. While this remarkable ability depends in part on the human brain's immense processing power, the fast response of the extraocular muscles and the eyeball's light weight are also vital. Even a small point and shoot camera mounted on a servo is typically too heavy and slow to move with the agility of the human eye. How, then, can we give a computer the ability to track movement quickly and responsively?

Thanks to recent progress in camera miniaturization, small, easily manipulable cameras are now readily available. In this project, we use a first person view (FPV) camera intended for use on model airplanes. The camera is mounted on servo motors which can aim the camera with two degrees of freedom. The entire assembly weighs only 32 grams, only slightly more than a typical human eyeball. Coupled with a GPU-based tracking algorithm, the FPV camera allows the computer to robustly track a wide array of patterns and objects with excellent speed and stability.

July 5, 2010

DIY Back to the future shoes - Power Laces- the Auto lacing shoe

Power Laces- the Auto lacing shoe - awesome.

Why wait until 2015? Inspired by 'Back to The Future II', this project is less 'Practical' than 'Proof of Concept', but hopefully it'll tide you over until Nike comes out with something more polished. This was also the first time I worked with an Arduino microcontroller, and I wanted to get some experience with the little guy. Operation is quite simple- step into the shoe and a force sensor reads the pressure of your foot and activates two servo motors, which apply tension to the laces, tightening the shoe. A touch switch reverses the servos. Due to budget constraints, I only modified one shoe. Where did I put that darn sports almanac?!

Today there were a lot of people tweeting about today being the "date" on the Back to the Future time machine that was "25 years in the future" - it was not, but that didn't stop all those re-tweets. Spend more time making, the best way to predict what is going to happen in the future is to make it :)

Mshield Lrg
Made with a Motorshield!

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