The Real Science (Not Armchair Science) Of Consciousness

Among brain researchers there’s a truism that says the reason people underestimate how much unconscious processing goes on in your brain is because you’re not conscious of it. And while there is a lot of unconscious processing, the truism also points out a duality: your brain does both processing that leads to consciousness and processing that does not. As you’ll see below, this duality has opened up a scientific approach to studying consciousness.

Are Subjective Results Scientific?

Researcher checking fMRI images.
Checking fMRI images.

In science we’re used to empirical test results, measurements made in a way that are verifiable, a reading from a calibrated meter where that reading can be made again and again by different people. But what if all you have to go on is what a person says they are experiencing, a subjective observation? That doesn’t sound very scientific.

That lack of non-subjective evidence is a big part of what stalled scientific research into consciousness for many years. But consciousness is unique. While we have measuring tools for observing brain activity, how do you know whether that activity is contributing to a conscious experience or is unconscious? The only way is to ask the person whose brain you’re measuring. Are they conscious of an image being presented to them? If not, then it’s being processed unconsciously. You have to ask them, and their response is, naturally, subjective.

Skepticism about subjective results along with a lack of tools, held back scientific research into consciousness for many years. It was taboo to even use the C-word until the 1980s when researchers decided that subjective results were okay. Since then, here’s been a great deal of scientific research into consciousness and this then is a sampling of that research. And as you’ll see, it’s even saved a life or two.

Continue reading “The Real Science (Not Armchair Science) Of Consciousness”

Oh Deere, Is That Right To Repair Resolution Troubling You?

Over the years a constant in stories covering the right to repair has come from an unexpected direction, the farming community. Their John Deer tractors, a stalwart of North American agriculture, have become difficult to repair due to their parts using DRM restricting their use to authorised Deere agents. We’ve covered farmers using dubious software tools to do the job themselves, we’ve seen more than one legal challenge, and it’s reported that the price of a used Deere has suffered as farmers abandon their allegiance to newer green and yellow machines. Now comes news of a new front in the battle, as a socially responsible investment company has the tractor giant scrambling to block their shareholder motion on the matter.

Deere have not been slow in their fight-back against the threat of right-to-repair legislation and their becoming its unwilling poster-child, with CTO Jahmy Hindman going on record stating that 98% of repairs to Deere machinery can be done by the farmer themself (PDF, page 5) without need for a Deere agent. The question posed by supporters of the shareholder action is that given the substantial risk to investors of attracting a right-to-repair backlash, why would they run such a risk for the only 2% of repairs that remain? We’d be interested to know how Deere arrived at that figure, because given the relatively trivial nature of some of the examples we’ve seen it sounds far-fetched.

It’s beyond a doubt that Deere makes high-quality agricultural machinery that many farmers, including at least one Hackaday scribe, have used to raise a whole heap of crops. The kind of generational brand loyalty they have among their customers simply can’t be bought by clever marketing, it’s been built up over a century and a half. As spectators to its willful unpicking through this misguided use of their repair operation we hope that something like this shareholder move has the desired effect of bringing it to a close. After all, it won’t simply be of benefit to those who wish to repair their tractor, it might just rescue their now-damaged brand before it’s too late.

Curious about previous coverage on this ongoing story? This article from last year will give context.

Header image: Nheyob / CC BY-SA 4.0

Anr air quality sensor mounted on a bike's handlebar

Measuring Air Quality Using Mobile Sensors For The Masses

Poor air quality is a major problem for city dwellers the world over. Dust, smoke, particles and noxious gases from vehicles, industry and agriculture makes many megacities downright hazardous to live in. Pinpointing the source of pollution and developing strategies for mitigation requires accurate data on pollutant levels, but obtaining these numbers is not always easy.

Enter CanAirIO, a citizen science project that aims to gather air quality data from around the world by putting sensors into the hands of as many people as possible. Its team has developed two different sensor nodes for this purpose: an indoor one that can measure CO2, and a mobile one that can measure particulate matter (PM) levels. Both versions are powered by an ESP32 microcontroller that reads out the air quality sensors and connects to the Internet using WiFi or BlueTooth. The data can then be shared online to create detailed maps showing local variations in air quality.

The design of the sensor nodes is fully open-source, allowing anyone with basic electronic skills to build them. The sensors are a Sensirion SCD30 for CO2 measurement and an SPS30 for PM levels. The mobile version comes with a neat 3D-printed enclosure that can be mounted on a bike’s handlebar, enabling the user to quickly gather data around their neighbourhood. A mobile app simplifies setting up the sensors and sharing the data.

The project has already been successful in gathering detailed data in the city of Bogotá, Colombia, and will no doubt prove useful in many other pollution hotspots around the world. We’ve seen similar community efforts to monitor air pollution and even radiation in various places, both showing how relatively simple devices can help to make a difference in people’s wellbeing. Continue reading “Measuring Air Quality Using Mobile Sensors For The Masses”

Fail Of The Week: Hackaday Writer Attempts XBox Repair

Like a lot of Hackaday readers, I pride myself on being “the fix-it guy” in my family. When something breaks, I get excited, because it’s a chance to show off my skills. It’s especially fun when something major breaks, like the fridge or the washing machine — repairs like that are a race against time, since I’ve got to get it fixed faster than it would take to hire someone to do it. I usually win the race; I can’t remember the last time I paid someone to work on something. Like I said, it’s a point of pride.

And so when my son came home on Thanksgiving break from his first semester away at college, eager to fire up his Xbox for some mindless relaxation from his biochemistry studies, only to be greeted with a black screen and no boot-up, it was go-time for me. I was confident that I’d be able to revive the dead box in time for him to have some fun. The fact that he’s back at school and the machine is still torn apart on my bench testifies to my hubris, but to be fair, I did get close to a fix, and may still yet get it done. But either way, the lessons I’ve learned along the way have been really valuable and worth sharing.

Continue reading “Fail Of The Week: Hackaday Writer Attempts XBox Repair”

Shady Air Umbrella Given New Lease On Life

Many infamous Kickstarter projects have ultimately flopped or failed, leaving backers frustrated and angry. Often pitched with a splashy convincing video that happens to have critical components conveniently offscreen. [Allen Pan] was reminiscing about one such project, the air umbrella, and decide to redeem the project by making his own.

The basic idea of the air umbrella was a device that could create a cone of fast-moving air over your head to deflect air. Going off of the specs listed on the original Kickstarter page, [Allen] made a simple prototype that did nothing. Suspicions confirmed, he decided to keep going by buying a powerful electric leaf blower. A nozzle was 3d printed that could direct the air into the needed disc. Early testing with the mist function on a garden hose seemed promising, and they worked their way up to progressively larger raindrops.

Finally, the clouds of California smiled upon them, and it rained. [Allen] was ecstatic that his umbrella worked. He couldn’t hear much out of one ear as he was holding a leaf blower next to it for a few minutes, but it’s a small price to pay to stay dry with the Air Umbrella.

If you’re curious about more false Kickstarter claims, why not read up on this tiny Arduino compatible board making some dubious claims.

[Header image courtesy of Air Umbrella Kickstarter page]

Continue reading “Shady Air Umbrella Given New Lease On Life”

Abandoned Airplane Takes Off Again As Luxury RV

You remember how you wanted to combine everything as a kid? Like lions and tigers into ligers and so on? Well, some kids dream of transportation hybrids. For eighty-year-old [Gino Lucci], now an Air Force retiree, that dream involved a recreational vehicle that combined an airplane fuselage and a delivery truck.

There it was, rusting in a field outside Rolla, Missouri — the vintage plane that would start [Gino Lucci] on the path to fulfilling this dream. This project began when [Gino]’s son spotted the body of a 1943 Douglas R4D military transport aircraft.

Over the next year, [Gino] and his sons painstakingly fused the fuselage to the chassis of an International DuraStar 4400 medium-duty truck. We love how they went about it. [Gino] and the boys just kept putting the two together and cutting away the fuselage in stages until they got it right. After making it roadworthy, it took another two years to work out the kinks.

The Fabulous Flamingo is 38 feet (11.6 meters) long and stands 12.5 feet (3.81 meters) tall. But the best metric is the width. It’s unspecified, but is apparently half an inch (1.27 cm) under the definition of what is street legal in Michigan. They used the plane’s engine cowlings as fenders and got the mirrors off of a ’70s Ford pickup. Floor it past the break and check it out.

This build cost about $20,000 USD all told. If you’ve got that kind of money, you could instead stuff a powerful engine into a tiny plane to get your kicks.

Continue reading “Abandoned Airplane Takes Off Again As Luxury RV”

Indoor Blimp Sails Through The Air Using Ultrasonic Transducers

Quadcopter type drones can be flown indoors, but unless you have a lot of space, it usually just ends in a crash. The prospect of being hit in the face by the propellor blades, spinning at 10k RPM doesn’t bear thinking about, and then there’s the noise. So, as a solution for indoor photography, or operating in public spaces, they are not viable. Japanese mobile operator DOCOMO has a new take on an old idea; the blimp. But, surely even a helium filled vehicle needs blades to steer around the room, we hear you cry? Not so, if you use a pair of specialised ultrasonic transducer arrays to move the air instead! (Video, embedded below)

Three banks of thrusters provide a 180 degree steerable net force

Details are scarce, but DOCOMO have fitted a helium balloon with modules on either side that can produce a steerable thrust, allowing the vehicle to effect all the expected aerial manoeuvres with ease and grace. The module at the bottom contains the control electronics, an upwards facing RGB LED for some extra bling, and of course a video camera to capture those all-important video shots.

We’d love to find a source for those ultrasonic transducer devices, and can only guess at the physical arrangement that allows for air to pass in one direction only, to effect a net thrust. We can find a few research papers hinting at the ability to use ultrasound to propel through air, like this one (bah! IEEExplore Paywall!) but to our knowledge,  this technology is not quite in the hands of hackers just yet.

Blimps are by no means scarce on these fine pages, here is a Blimpduino, an Arduino controlled 3D printed blimp, an illuminated blimp art installation by Japanese artist [Kensho Miyoshi] and if using helium is just too darn safe for you (or if you want to help prevent this allegedly precious resource from being lost into space) you could just build a remote controlled blimp using hydrogen instead. Just don’t light a match.

Continue reading “Indoor Blimp Sails Through The Air Using Ultrasonic Transducers”