For the LED lamp projects, I’ve been using ATtiny13A chips for the dimmer board, programmed with the Arduino IDE and an Arduino board as an In-System Programmer (ISP).  The Arduino code is too big for an ATtiny, so I’ve been using a version of the core13 stripped-down system.

I got rather tired of wiring up the 8 wires for the ISP, checking to make sure that each one was correct.  What I wanted to do was just plug in a standard 8-pin cable from the Arduino board to the ATtiny board, but the ISP header on the Arduino board has the Arduino reset line, not the reset line that has to go to the ATtiny board.

I decided to modify a standard cable to do the right thing, separating the reset line from the rest. The reset line is on pin 7, so on a standard ribbon cable, it is the seventh of the eight wires.

First I carefully cut wire 7 near one of the plugs with a razor knife, peeled it back and spliced on another piece of stranded wire:

The blue wire and wire 7 of the ribbon cable were soldered together and covered with heat-shrink tubing.

I taped the soldered joint to rest of the ribbon cable for strain relief, and added a crimp-on female header at the other end. (I prefer female crimp-on headers, because they are more versatile than male pin—I can stick in a double-ended male header pin to convert them to male connectors when needed.)

The electrical tape stabilizes the splice and the crimp-on female header allows connecting to male or female headers on the Arduino board. Here there is a double-ended male header pin in the female header, to convert it to a male header.

Here is a Leonardo board being used to program one of the dimmer boards:

With the new cable, it is easy to unplug the cable after programming to test out the system, then plug it back in with the right orientation (I used a shrouded header on the dimmer board) when reprogramming is needed.

Note that the reset line for the ISP cable connects to pin 10 of the programming Arduino board, which would be connected via a USB cable to the laptop that has the Arduino development environment on it.

I’ve seen several kluges on the web for connecting up Arduinos as ISPs, but none were as simple as and easy to use as what I did here, so I thought I ought to share it.

Forget all of this video game nonsense: pinball is the real king of gaming. After all, it involves large pieces of metal flying around at high speed. [retronics] agrees: he has resurrected an old Briarwood Aspen pinball table using an Arduino.

When he bought the table, he found that the electronics had been fried: many of the discrete components on the board had been burnt out. So, rather than replace the individual parts, he gutted the table and replaced the logic board with an Arduino Mega that drives the flippers, display and chimes that make pinball the delightful experience it is. Fortunately, this home pinball table is well documented, so he was able to figure out how to rewire the remaining parts fairly easily, and how to recreate the scoring system in software.

His total cost for the refurb was about $300 and the junker was just $50 to start with. Now for $350 you can probably find a working pinball table. But that’s not really the point here: he did it for the experience of working with electromechanical components like flippers and tilt switches. We would expect nothing less from the dude who previously built an Android oscilloscope from spare parts.

Todo is the italian design consultancy and creative agency taking care of Arduino and Genuino brand identity and interviewed in this previous blogpost.

Last year, among other projects, they worked on an unconventional communication campaign to narrate the re-opening of the well-known Turin’s Egyptian Museum, displaying a collection of over 30,000 ancient pieces.

The campaign’s goal was to hold people’s attention over six months before the official opening of the Museum and be able to speak to a broad national and international audience.

TODO created an open air installation composed by an almost-4-meter-tall hourglass (with a hidden mechanism running on Arduino) that had to work day and night, for six months and over the winter. According to Wikipedia, this hourglass could be the 4th biggest of its kind in the world!

The main challenge was that they had to make sure that the very last grain inside the hourglass would fall on the day of the Museum’s inauguration.

The installation was created thanks to many collaborators among which Gabriele Gambotto who developed the electronic part based on the Arduino Yún on which they added a custom shield ( See pic below), connected to various sensors and a precision scale. The sand-like material passed through a valve and a long screw conveyor controlled by a mot

Take a look at the video of the ‘Hourglass Countdown’ and to see it in action:

In an indoor area of the museum an interactive display case was the other face of the campaign revealed to the audience:

A series of replicas of ancient Egyptian finds were covered in sand, and users could interact with the system by choosing the spot they wished to unveil, blowing into a microphone, and having their breath converted by a small robot arm, which placed itself in the exact spot, blew away the sand and revealed part of the find.

The experience came to life in two different contexts. Locally, a roadshow with several stops made the display case accessible all around the city. Online, through the campaign’s website, you could blow away the sand from anywhere in the world, seeing the live streaming video of the robot moving and unveiling the find.

The installation was running on a ROS system, Arduino Mega, using blow sensors and controller, and an iPad to allow interaction with the visitors of the museum.

Check the video to see the amazing expression of people discovering ancient objects below the sand:

Shields are great for connecting external circuits to your microcontroller board. In this project, you'll learn to make your own custom shields for Arduino.

Read more on MAKE

The post How to Make Custom Shields for Your Microcontroller Board appeared first on Make: DIY Projects, How-Tos, Electronics, Crafts and Ideas for Makers.

How long can you keep an Arduino circuit running on three AA batteries? With careful design, [educ8s] built a temperature sensor that lasts well over a year on a single charge of three 2250 mAH rechargeable cells (or, at least, should last that long).

Like most long-life designs, this temperature sensor spends most of its time sleeping. The design uses a DS18B20 temperature sensor and a Nokia 5110 LCD display. It also uses a photoresistor to shut off the LCD display in the dark for further power savings.

During sleep, the device only draws 260 microamps with the display on and 70 microamps with the display off. Every two minutes, the processor wakes up and reads the temperature, drawing about 12 milliamps for a very short time.

Along with the code, [educ8s] has a spreadsheet that computes the battery life based on the different measured parameters and the battery vendor’s claimed self discharge rate.

Of course, with a bigger battery pack, you could get even more service from a charge. If you need a refresher on battery selection, we covered that not long ago. Or you can check out a ridiculously complete battery comparison site if you want to improve your battery selection.

It is almost impossible these days to find a PC with old ISA card slots. Full size PCI card slots are in danger of going the same way. Many PCs today feature PCI Express connectors. PCI Express offers a lot of advantages including a small size, lower pin count, and a point-to-point serial bus topology that allows multiple simultaneous transfers between different pairs of end points. You’ll find PC Express connectors in things other than PCs too, including a lot of larger embedded systems.

If you ever wanted to prototype something on PCI Express, you’d usually turn to an FPGA. However, [moonpunchorg] posted a workable design for an Arduino on a mini PCI Express board. The design files use KiCAD so it should be fairly easy to replicate or change. Naturally, there are pins on the edges to access I/O ports and power. You do need to use ISP to program the Arduino bootloader on the chip.

The board appears to a host computer as a SparkFun as a Pro Micro 3.3V board, and from there you could easily add function to a computer with a PCI Express slot using nothing more than the Arduino IDE. The board is known to work with the VIA VAB-600 Springboard and VIA VAB-820 boards, although it is likely to work with other PCI Express hosts, too.

If you feel like experimenting with connected objects, a good idea could be to start from a funny project explained step-by-step in a tutorial. In the video below you can follow the instructions given by Dana, Documentation Hero at relayr, using an Arduino Yún, a gas sensor and relayr cloud to make a little Batman-shaped toy dance according to data:

I used a moisture sensor as an input and a servo motor as an output that I can control through a demo web application made using the browser-sdk.

The code in this repository will enable you to use your Arduino to build a prototype of a device and connect it to the relayr platform, much like the one created with the Particle.io Photon. It contains instructions and a demo app which will make your first few steps in the relayr-Arduino prototyping realm easy and fun!

 

Recently we had the opportunity to sit down and interview Arduino SRL’s CEO, [Federico Musto], over a nice dinner. His company is one half of the Arduino vs Arduino debacle which has pitted Arduino.cc against Arduino.org in a battle over the trademark on “Arduino”.

Given the tremendous amount of press coverage of [Massimo Banzi] and the Arduino LLC side of the story (Arduino.cc), we were very interested in hearing how the whole situation looks where [Frederico Musto] sit (Arduino.org). In the end, we came away with what we feel is a more balanced and complete picture of the situation, as well as interesting news about future products from the Arduino SRL camp. [Musto’s] take on the legal proceedings, both past and present, is nothing short of fascinating.

A Quick Refresher

Unless you’ve been sitting under a large chunk of fused silicon, you’ve probably read or heard something about the battle of the two Arduinos. Founder [Massimo Banzi] and the rest of the Arduino crew planned to make an affordable, accessible microcontroller/physical computing platform based on the software project (Wiring) of one of his students, [Hernando Barragán]. In 2004, [Gianluca Martino], one of the Arduino founders, and [Daniela Antonietti], later Arduino LLC CFO, founded Smart Projects SRL and started cranking out Arduino boards. That much of the history of the Arduino is non-controversial.

Money started flowing in, Arduino LLC was founded in the US in 2008, and tensions started building between the software-and-documentation side (Arduino LLC) and the board-building side (Smart Projects SRL). In 2014 Smart Projects (in Italy) changed its name to Arduino SRL, was bought by [Federico Musto], and all heck broke loose, not necessarily in that order.

The Past, According to [Musto]

The central issue of the Arduino schism is who owns the trademark to the “Arduino” brand. In the USA this is currently Arduino LLC, although Arduino SRL filed a petition to invalidate this trademark and this isn’t likely to be resolved until early 2016. (Naturally, Arduino LLC has mounted its own counter-suit in the States.)

In Italy, Switzerland, and probably the rest of the world, the trademark appears to belong to Smart Projects, now Arduino SRL. This is because Smart Projects filed for the trademark in Italy in December 2008, just months after the legal incorporation of Arduino LLC, which only got around to filing in the Spring of 2009. This is, naturally, also being contested in Italian courts by Arduino LLC.

That’s the mess. How did we get in it? Arduino LLC claims that [Gianluca Martino] didn’t inform them of the Italian trademark until it was granted in 2010. Why would one member of the Arduino core team go rogue and trademark the name without telling the others? [Federico Musto]’s telling of the tale makes [Gianluca]’s preemptive trademarking action seem a lot more plausible, if still not entirely above-board.

2008 was the year of the big Arduino breakout. Sales had crossed over 100 boards per day and Smart Projects was having a hard time keeping up with demand. At this point, it started to look like there was real money to be made in Arduino, both for companies with scruples offering Arduino add-on shields, and for companies without scruples selling Arduino-branded knockoffs of the “official” boards. How to handle the clones and make money off of the Arduino brand was on everyone’s mind within the Arduino group, but there was disagreement about just how to do it.

Meanwhile [Gianluca Martino] and [Daniela Antonietti] at Smart Projects had just built out their production line to keep up with demand for the boards. Funding these investments wasn’t easy. Among other sources of money, [Daniela Antonietti] had mortgaged her house to pay for a professional reflow oven. It probably seemed very important to [Martino] and [Antonietti] to safeguard their personal investments in the Arduino project from the waves of unauthorized clones. They took matters into their own hands, allegedly behind [Banzi]’s back, and trademarked “Arduino”.

Substantiating all the details of [Musto]’s version of [Gianluca]’s story is impossible and probably devolves fairly quickly into he-said, she-said and hearsay, so we’ll keep it short here. But anyone who’s worked in a team knows how a single individual can come to dominate a discussion, leaving other parties feeling marginalized and isolated, and we can also understand the temptation to act in defiance.

We can imagine how this feeling must be multiplied if a disproportionate percentage of your investment is in play. [Musto]’s telling of the story is that the financial risk undertaken by the Smart Projects team was under-appreciated by [Banzi], and that [Martino] was acting in the financial equivalent of self-defense as the only production-side interest within the Arduino five and as the CEO of Smart Projects.

Arduino certainly wouldn’t be where it is today if [Martino] and [Antonietti] hadn’t taken the risk to pony up the money and build out the one assembly line that was turning out Arduinos in 2008. The key to Arduino’s success was the merger of firmware and documentation with a hardware-based physical computing platform. Both parts are necessary, but building the hardware required more capital and involved real financial risk.

So is Arduino SRL or Arduino LLC the “real” Arduino? We think both are. Unfortunately, nobody’s asking us; the question is playing out in Italian and US courts.

Laundry List of Lawsuits

Lawsuits have been the order of the day, and it turns out we only knew about the tip of the iceberg. Previously, we’d reported on Arduino SRL’s petition to cancel Arduino LLC’s trademark in the USA and on Arduino LLC’s tit-for-tat suit to cancel Arduino SRL’s trademark in Italy. But [Federico Musto] laid out for us a laundry-list of legal cases that we had no idea about.

When [Musto] bought out [Gianluca Martino]’s share in Arduino LLC as well as the Arduino SRL, he wanted to see the accounting of the companies that he had a 20% stake in. By this time, there was so much bad blood between [Martino] and [Banzi] that according to [Musto], they refused to show him the books. He took both the US Arduino LLC and the Swiss-registered Arduino SA to court and won, in separate cases in the US and Switzerland.

Remember that inclusion of a popup in the Arduino IDE that flagged all Arduino boards made by Arduino LLC as being “unofficial”? Until the various trademark cases get resolved in court, this is possibly libellous. [Musto] told us that Arduino LLC only backed down from this position after Arduino SRL took legal action. (And we gave Arduino LLC credit for backing down off of a bad idea on their own.)

Most recently, Arduino LLC filed an injunction in Italy to prevent Arduino SRL from selling its Arduino boards due to trademark infringement. This was recently denied, and we’ve read the ruling from the court in Turin, Italy. It makes mention of the impossibility of Arduino LLC having controlled the Arduino brand as early as 2005, when Smart Projects was producing the boards under the Arduino name.

We’re not (Italian) lawyers, but the denial of the summary injunction in Italy seems to cast further doubt on Arduino LLC’s ability to prevail in Italy and use the Arduino trademark outside of the US. Hence the pivot to the “Genuino” brand name for sales of Arduino boards outside of the USA.

Overall, [Musto] expressed a bit of dismay at having walked into a full-blown feud when he bought Smart Projects from [Martino], and stressed the defensive nature of many of the lawsuits — responding to being barred from seeing the firms’ books and the IDE popup in particular. On the other hand, Arduino SRL did initiate proceedings against Arduino LLC in the USPTO case, and [Musto] also mentioned that his lawyers don’t like the “Genuino” brand and logo, and may be forced to take action against it.

In short, there have been a number of legal victories for Arduino SRL, but the two biggest cases are still outstanding. Both [Massimo Banzi] and [Federico Musto] have expressed their weariness at the continuing lawsuits, but both sides seem willing to file new ones. Until there’s a final decision reached in both Italy and the USA, we guess they’ll both have to suffer through.

Community Splits and Code Forks

It was also interesting to hear [Musto]’s side of the story behind arduino.org and the IDE’s code fork.

Because of their previous tight cooperation, [Gianluca Martino] and Smart Projects had all used the arduino.cc domain for their e-mail addresses. Arduino LLC, which had control of the domain, cut their e-mail off as in Fall 2014, leaving the entire Smart Projects / Arduino SRL team without business e-mail communications. They had to re-establish a domain and set up e-mail and business presences quickly once it was clear that Arduino LLC was going to try to shut them down. Hence arduino.org.

[Federico Musto] says he regrets the code fork, and wishes that Arduino SRL had just waited it out until the courts had forced Arduino LLC to remove their incendiary popup from the codebase. On the other hand, once Arduino LLC had shown that they were willing to play dirty with the IDE code, it hardly seems like a good idea to couple your livelihood to a (now-)rival firm that seems to be willing to single you out. (None of the truly counterfeit Arduino boards triggered the popup, only those made by Arduino SRL.)

In short, [Musto] explains a lot of the controversial actions on the part of Smart Projects / Arduino SRL as being a reaction to internal disagreements within the Arduino group, and subsequent aggressive actions by Arduino LLC. Contrary to the innocent picture of Arduino LLC painted by [Banzi], it’s clear that there’s been skulduggery on both sides of the aisle.

The Future

Until early 2016, when the USPTO ruling comes down, the two firms are in limbo. Ironically, this hasn’t really affected the end-hacker (read: us) at all. If anything, both firms have been doubling their efforts to sway us with not only their press propaganda, but also with their product and software offerings. How long will this last and what new stuff will the future bring? We asked [Musto] about Arduino SRL’s plans.

An Arduino Foundation?

Given that Arduino SRL and Arduino LLC may not ever settle their differences amicably, what is to become of the Arduino brand? [Musto] suggests a Solomonic solution: take control of “Arduino” out of the hands of any one person or company leave it up to a community-directed foundation.

[Musto] told us that he envisions an “Arduino Foundation” with clear and open balance sheets and a democratic governance structure. Think Mozilla Foundation mashed-up with Debian’s governance. The Foundation would be open to all stakeholders in the Arduino community. [Musto] said that he’s currently in the middle of paperwork, and that there will probably be announcements forthcoming. We discussed how such a foundation could also be used to funnel some money back to the Arduino community, because after all a lot of the success of Arduino is due to the code contributions of users.

New Products, New IDE

[Federico Musto] describes himself as a “software guy” with a penchant for radio frequency hardware. Given the former, he said he’s surprised at how much time they’re spending on new physical product development, but his RF roots certainly show through. His design for what became the Arduino Yún, a Linux WiFi SOC combined with an AVR microcontroller, was [Musto]’s entrée into the Arduino universe, after all.

In this context, we asked [Musto] our $64k question: given that the Yún and similar boards face pressure from products like the ESP8266 from below and the Rasberry Pi from above, what is Arduino SRL’s direction going to be in the future. Bigger or smaller? Or staying in the middle? He replied that they have projects going at each scale.

On the big end of things, we have the Yún and future Linux/microcontroller mashup devices, for which [Musto] and now Arduino SRL, is continuing development of its Linino distribution. Linino is an OpenWRT-based Linux distribution modified to play well with external microcontrollers. Linino’s killer feature, in our estimation, is the MCUIO subsystem, which gives low-level Linux driver access to the associated microcontroller(s) — pins on the micro appear as devices on the Linux filesystem. The marriage of a small embedded Linux with a microcontroller for I/O is clearly an interesting area right now, if only the communications between the two weren’t so difficult. MCUIO aims to change that.

On the smallest end of the spectrum, Arduino SRL is working on a new product line of tiny (think littleBits) interconnected devices, to be programmed using a visual, drag-and-drop interface. They’re also (all?) going to be wireless. This project is still in the beginning stages, but [Musto] suggested that he’d be interested in an early alpha release if folks were interested in developing code for the platform. We can’t wait to see it working.

Uno-plus

And then in the middle of things, [Federico Musto] mentioned that there would be a forthcoming “Uno-plus” board with a yet-to-be-disclosed ARM chip on board coming out in the fall. The goal is essentially a supercharged Arduino form-factor board at a reasonable price.

We talked a lot about WiFi versus sub-GHz radios for IoT projects. Our experience is that the current crop of WiFi devices (the Hackaday-darling ESP8266 included) are power hogs, and not something you can run off batteries. [Musto] mentioned some new WiFi devices he’d seen, that aren’t yet in production, that will significantly help the WiFi power budget when they become available. Arduino SRL is looking to incorporate them into an IoT-style device when possible. Stay tuned.

Hardware aside, both Arduino LLC and Arduino SRL are coming out with new IDEs, and they look a lot better than the previous incarnations. The Arduino SRL version is based on Javascript and Node.js, and uses Adobe’s Brackets editor. In short, it’s all caught up with today’s new hotnesses for web coders, which is probably a good thing. (Finally, code completion!) It’s still in alpha, but you’re welcome to check it out.

Conclusion

The Arduino vs Arduino courtroom drama makes for good popcorn time for us, and it’s undoubtedly nerve-wracking for the twin Arduini and all directly involved. But we’re also glad to see that both companies are continuing to innovate on the hardware and software fronts.

In retrospect, our question of market niche was off-base. Arduino SRL’s focus isn’t on a device scale as much as on the general merging of wireless technologies with microcontrollers, and developing the support software for Linux/microcontroller integration in a wireless context. As far as Arduino LLC’s new product directions seem to be wired and/or wearable, we wonder if there isn’t room in the hacker economy for both firms to flourish despite the trademark woes?

A vise, a hacksaw and file, some wrenches – the fanciest tools [HomoFaciens] uses while building his DIY hardware store CNC machine (YouTube link) are a drill press and some taps. And the bill of materials for this surprisingly precise build is similarly modest: the X- and Y-axes ride on cheap bearings that roll on steel tube stock and aluminum angles; drives are threaded rods with homemade encoders and powered by small brushed DC gear motors; and the base plate appears to be a scrap of ping-pong table. The whole thing is controlled by an Arduino and four H-bridges.

The first accuracy tests using a ball point pen for tooling are quite impressive. [HomoFaciens] was able to draw concentric circles eyeball-accurate to within a few tenths of a millimeter, and was able to show good repeatability in returning to a point from both directions on both the X- and Y-axis. After the pen tests, he shows off a couple of other hardware store tooling options for the Z-axis – a Proxxon rotary tool with a burr for engraving glass; a soldering iron for cutting styrofoam; and a mini-router that works well enough to cut some acrylic gears.

We’re impressed by this build, which demonstrates that you don’t need a fancy shop to build a CNC machine. If you’re getting the itch to jump into the shallow end of the CNC pool, check out some of the builds we’ve featured before, like this PVC CNC machine, or this $250 build.

[Thanks, ThunderSqueak]

Every year the students of the Copenhagen Institute of Interaction Design (CIID) attend the Physical Computing class as part of their curriculum.

Having a small delegation of the Arduino team teaching this class has become quite a ritual. This past March Ubi De Feo, Alice Pintus, and Lorenzo Romagnoli runned the two-weeks-long intensive class.

Teaching at CIID is great experience, since you are surrounded by incredibly motivated and curious students, that are doing everything possible to design amazing projects and prototypes.

The topic of this year was prototyping interactive installations for a Science Center that would explain in a playful and engaging way how a technology works. For most of the students this was the first experience with physical computing, but even in such short time they were able to build eight different prototypes. The projects explain in an interactive way the science behind computer viruses, allergies, video compression, machine learning, laser printing, digital music synthesis, binary numbers and neuroprosthetic.

In Explaining laser printing Victoria Hammel, Chelsey Wickmark, Ciaràn Duffy, Feild Craddock demonstrate how the laser printer works. By using 16 servomotors connected to an Arduino UNO to move a matrix of magnets they were able to attract iron filings and draw letters on paper.

In Troyan 77 Karan Chaitanya Mudgal, Liliana Lambriev, Gunes Kantaroglu, Dhruv Saxena visualize the effects of a Trojan Virus harming your computer. Connecting Processing to Arduino they were able to create an overlay projection on top of the maze representative of the effect of the viruses on a computer.

Sound Blocks by John Ferreira, Alejandra Molina and Andreas Refsgaard is an musical instrument that explain how to compose sounds combining multiple soundwaves. The prototype was built using Arduino as a midi controller for Ableton.