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Engineers develop bio-machine nose that can “sniff” and classify odors

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6 years ago

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Engineers from Brown University in Rhode Island have invented a small, low-cost sensor device which is able to classify odors using input from a mimicked “sniffing” action. It’s called TruffleBot, and it’s here to raise the bar on electronic “noses”. It also works with Raspberry Pi, an inexpensive mini-computer popular with electronics hobbyists, students, and others in the “maker” crowd.

Generally, an electronic nose is a device comprising several chemical sensors whose results are fed through a pattern-recognition system to identify odors. In traditional devices, the chemical responses alone are used for classification. The engineers behind this invention, however, decided to incorporate non-chemical data to account for the mechanics of the smell process used in nature for a better result. Their experiment proved successful with an approximate 95-98% rate of accuracy in identification compared to about 80-90% accuracy with the chemical sensors alone.

According to the inventors’ published paper, the guiding knowledge that made TruffleBot so useful in odor detection was this: Different smells have different impacts on the air around them, and measuring the variations enables more accurate identification. Did you know that beer odor decreases air pressure and increases temperature? The changes are slight, but TruffleBot can sense them.

This is where the “sniffing” comes in. The device uses air pumped through four obstructed pathways before sending it through chemical and non-chemical sensors. Odors impact the air surrounding them, and the movement of the air through obstacles (“sniffing”) enables the odors’ impact to be more accurately measured.

A chart detailing how TruffleBot processes odors. | Credit: Brown University

So, where exactly would one need an electronic nose? Everywhere. Devices with the chemical sensing ability are being used in agriculture, military, and commercial applications to identify all sorts environmental data. Essentially, electronic noses are useful in any industrial application that has odor involved.

Nasal Marketing

Did you know that it’s possible to trademark a smell in the United States? It’s not easy to accomplish given the somewhat difficult requirements to meet, but a few such things exist. The fact that Play-Doh, a product whose smell is probably one of its most distinct features, was granted a trademark for the scent only this year is testament to the difficulty of obtaining such a mark. However, the fact that some companies have found enough incentive to make sure only their company can give your nose a particular chemical experience tells a lot about that sense’s importance from a marketing perspective.

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On one hand, utilizing smell in marketing might seem a little manipulative. After all, creating an air freshener that reminds someone of a beloved, deceased relative on purpose might not seem like a particularly ethical way to target their money. On the other hand (or bigger picture), however, the motivation for marketers to use scent as a tool involves a sort of “chicken or the egg” question.

To summarize part of an article in the journal Sensors on the role scent plays in society and commerce, the aroma of products has a direct impact on their appeal to customers and thus, the success of the product. In fact, a change in a product’s formula that impacts its smell can, and often has had, devastating sales results. In other words, it’s not enough for a company to create a good product; it has to be a good smelling product.

Hacking the Human Nose

It’s probably no surprise that the commercial industry has categorized consumer preferences when it comes to smells. As the first sense fully developed after birth, our noses link us to things like memories, emotions, and chemical communication (think pheromones). Is it any wonder, then, why businesses might be interested in the functionality of the organ that is doing the receiving?

Turns out, there’s an enormous amount of science behind “hacking” a nose. Identifying smells is more than just categorizing chemical mixtures as “floral” or “masculine”. The multitude of chemical combinations available generates such a vast amount of data that scientists have implemented computer neural networks to analyze and classify it. Also, the actual mechanics of smelling something impacts the way the smell is received and processed in the brain. Computers and scientific instruments come in handy there as well. To really get to the core of human response to an aroma, lots of non-human tools are needed, and this is essentially where the TruffleBot fits in the greater realm of “olfactory” science.

I think this is a Sumerian variant for “fruity”. | Credit: AstroJane’s bathroom collection.

More Than Just Your Money

Perhaps one of the most innovative uses found for electronic noses is in disease research. One of the limitations of human smell is its overall weakness. A dog’s sense of smell is around 40 times better than a human’s, and a bear’s is a whopping 2,100 times superior to ours. That said, when researchers learned that certain diseases give off certain odors, the human nose wasn’t exactly the first choice to utilize in sensing them.

An electronic nose makes good use of the simple fact that organic matter releases chemicals into the air. For example, when a plant has been impacted by a fungus, the changes brought on in the plant’s structure release what’s called “volatile organic compounds” (VOCs). These VOCs can be detected by the sensors in an electronic nose and then provide information on the type of disease present without destroying the plants being tested.

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Humans have some amazing things to gain from electronic noses, too. Using sensors to process odors from VOCs, things like digestive diseases, kidney diseases, and diabetes, among many others,  are all receiving scientific attention for non-invasive diagnosis by these types of devices. With improvements brought on by inventions like TruffleBot, especially combined with its low-cost and resulting accessibility, a future involving remote diagnoses for any number of illnesses and diseases seems more possible every day.

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Accidental computer geek, fascinated by most history and the multiplanetary future on its way. Quite keen on the democratization of space. | It's pronounced day-sha, but I answer to almost any variation thereof.

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Elon Musk

Elon Musk roasts owners of this car brand after another Tesla vandalism incident

Published

3 hours ago

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March 16, 2025

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Elon Musk roasted owners of one specific car brand after yet another incident of a Tesla being vandalized, this time in New York.

Tesla owners have had a bit of a target on their backs in recent months as Musk, CEO of the company, has joined forces with U.S. President Donald Trump in an effort to eliminate excessive and unneeded government spending in the new Department of Government Efficiency, or DOGE.

Due to Musk’s bold personality and unfiltered political beliefs, he has gained plenty of critics in the last few months. Tesla owners are being targeted as a result, seeing their vehicles be vandalized on nearly a daily basis.

Tesla-owned showrooms across the country have also been the target of some attacks, as one was even damaged in a series of shootings, another lit on fire by a Molotov cocktail.

Nevertheless, Musk has continued to stand firm on his beliefs, and Tesla drivers are getting fed up with the amount of damage being done to their cars. In this particular instance, someone drew a swastika on the side of a New York City Tesla Cybertruck owner. He was able to confront the person who drew the offensive logo, an exchange that was caught on camera:

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The video was shared on X, which grabbed the attention of Musk, who was sure to criticize the make of the assailant’s vehicle: a Subaru.

Musk said:

“Crazy people. Naturally, he drives a Subaru …”

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The playful jab at Subaru drivers likely comes from the stereotype that those vehicles are usually driven by people with intense political and social beliefs. Facetious posts on Reddit claim that Subarus won’t operate without at least ten bumper stickers on them. Subaru’s past marketing and advertising campaigns have attracted those who are “outdoorsy,” Google’s AI description of the drivers states.

Musk has never held back and never will. In an interview with MSNBC, he said he will speak his mind and if his companies lose money because of it, “so be it.” One thing is for sure, Musk is not going to shy away from speaking or posting how he pleases.

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Tesla stores continue to face anti-Musk protests

Scenes from a protest outside of Tesla’s store in Loveland, Colorado.

Published

17 hours ago

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March 15, 2025

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Tesla stores have been the target of widespread protests and vandalism in recent weeks, after Elon Musk made a controversial gesture in January, and as he and the Trump administration’s newly created government efficiency division continues to gut federal agencies.

On Saturday, I went to the Tesla store in Loveland, Colorado, where demonstrators were already protesting upon my arrival at roughly 12:45 p.m. MT.  Walking up to the protest, I could see scattered groups of demonstrators lined up along about two blocks, spanning from the Tesla store to a nearby intersection and Sprouts location. One protestor said he had counted about 230 people at around 1:00 p.m. MT.

The protest felt generally peaceful, with cars driving by and honking, and demonstrators leaving a large space between the front of the Tesla store and the sidewalk, easily allowing workers and customers to go in and out.

You can see a few videos and photos from the site below, along with some of the responses I got from protestors and a prospective customer.

READ MORE ON TESLA PROTESTS AND VANDALISM:

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I spoke to about a dozen protestors about what they were protesting against. Most said they were there to condemn Musk’s recent federal worker and program cuts with the Trump administration, his performance of what some said resembled a Nazi salute at Trump’s inauguration ceremony in January, or the administration’s recent attacks against transgender and queer individuals.

One protestor, Elsa, identified as a former Republican and said she was “highly concerned that our Constitution is being ignored,” especially with regards to the three branches of government and the system of checks and balances.

“It surprises me that, even if you voted for Trump, or you believe in capitalism, which, I didn’t vote for Trump, but I do believe in capitalism — I’m a former Republican, I was a Republican for most of my life — but it’s dangerous to have power rest in a handful of ultra-wealthy people,” Elsa said.

“And our whole country needs to realize that,” she adds. “This to me is not even Republican or Democrat at this point.”

Instead, she says it now comes down to whether people want to give billionaires huge tax breaks, or to use that money to support a range of groups in the U.S., including those who have social security benefits, are veterans, or are 9/11 survivors seeking cancer treatments, as a few examples.

Another protestor, Mary, said she was taking part in the demonstration “because she loves this country and democracy,” adding that she wanted to help preserve democracy for her grandchildren.

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Still another protestor, Bryan, said that they were protesting because of the Trump administration and Musk’s attempts to erase transgender, non-binary, and queer people from history, drawing comparisons to the rise of fascism in Nazi Germany, where early human rights violations were lodged against gay and queer communities.

“I’m here because I have to be,” Bryan said. “I’m afraid of the future.”

Yet another person and his family were holding Ukraine flags, saying that they were protesting for a wide range of reasons, but especially for Trump’s recent meeting with Ukraine President Volodymyr Zelenskyy and Musk’s claims that the top Ukrainian executive was to blame for what he has called a “forever war.”

While most protestors appeared to be generally friendly, especially with each other, I did hear a few exchanges between demonstrators and those with other opinions. While I heard more cars honking throughout the experience, seemingly in support of the protests, I also noticed a few from which passengers yelled things like “Go Trump.”

“Direct action, we need to stop these fascists with direct action,” one protestor yelled in response.

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Additionally, I also talked to a prospective customer, Kristy, who was there for a test drive and said she had a negative experience with the protestors.

“I was test driving a Tesla, and as we pulled in and parked right here, this black one, these people right here in the middle yelled at me, ‘Hope you’re turning in your f*cking Nazi car,’ and I said ‘F*ck you,’” Kristy explained.

“And they’re like ‘F*ck you too, you’re a Nazi, f*cking Nazi lovers.’ And so, they’re just yelling racial slurs at me, and I’m far from a Nazi.”

Tesla store advisers declined to comment on the protests, and so did Loveland police.

Other Saturday protest footage from Tesla stores in California, Texas, and New York

The Loveland Tesla store has also been the site of repeated attacks in recent weeks, with authorities on Friday making a second arrest following multiple incidents. You can see the Department’s press release for the arrest below.

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The protest was also part of widespread demonstrations on Saturday, and it’s just the latest in actions targeting Musk’s electric vehicle (EV) company, some of which have included acts of vandalism, graffiti, arson, and even the use of weapons on Tesla storefronts.

Multiple other protests were also captured in footage on Saturday, including one in Santa Rosa, California, as shared by the San Francisco Chronicle, and another attended by conspiracy theorist Alex Jones in Austin, Texas. Still another was captured in New York City, and you can see footage from each of these protests below.

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Tesla vandalism cases under investigation by FBI Seattle

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Musk sets a date for Starship trip to Mars with Optimus on board

Optimus could be the first humanoid to make it to Mars, and Musk has set a date for when he thinks it’ll happen.

Published

23 hours ago

on

March 15, 2025

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Credit: SpaceX

Elon Musk has shared when he expects to take Starship to Mars for its first uncrewed mission, and he also says Tesla’s Optimus humanoid robot will be on board for the flight.

On Friday, Musk wrote on X that SpaceX’s reusable Starship rocket will take Optimus to Mars at the end of 2026, with human landings expected to commence a few years later.

“Starship departs for Mars at the end of next year, carrying Optimus,” Musk said. “If those landings go well, then human landings may start as soon as 2029, although 2031 is more likely.”

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Last year, the SpaceX and Tesla head also expectations that SpaceX would be able to begin uncrewed launches in 2016, with early launches including both Optimus and a Cybertruck unit.

Musk also followed up the announcement with a post on X on Saturday morning, noting that he expects SpaceX to launch more than 90 percent of Earth’s payload mass to orbit this year. Meanwhile, he says China will make up just around 5 percent, while the rest of the world, including other parts of America, would also make up just 5 percent.

He also predicted that that number would go up even further to nearly 100 percent, once SpaceX’s reusable rocket is being launched more frequently.

“When Starship is launching at high rate, SpaceX will probably carry >99 percent of Earth’s payload mass to orbit. This is necessary to make Mars a self-sustaining civilization,” Musk added.

READ MORE ABOUT SPACEX’S STARSHIP: Texas awards SpaceX $17.3M grant to expand Bastrop tech hub

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To be sure, Musk has been known to make ambitious claims about when his companies’ products would achieve certain milestones. For example, Musk predicted in 2018 that SpaceX could launch a rocket to Mars with humans aboard by 2024, though SpaceX only began testing the company’s reusable Starship in 2023.

Still, the company has been routinely testing Starship since then, and with increasing frequency, and in October, SpaceX performed the first catch of the Starship’s Super Heavy booster after liftoff to demonstrate the concept that a reusable rocket could be possible. In a launch earlier this month, SpaceX again successfully caught the Super Heavy Booster, though it lost the upper stage to a “rapid unscheduled disassembly,” effectively meaning that it had exploded in air and showered surrounding areas with rocket parts.

The explosion was the second consecutive launch in which debris from Starship reigned down, highlighting the continued importance of testing as SpaceX aims to make the rocket a viable product for reusable space travel.

On Friday, SpaceX also launched its Starliner spacecraft to the International Space Station (ISS) to rescue astronauts that have been stuck on the orbital craft, after a Boeing launch was originally intended to bring them back to Earth. While SpaceX attempted to rescue the two astronauts in September, issues with the Starliner craft’s thrusters discovered upon arrival made NASA hold off on approving the return mission.

SpaceX completes a new first with recent Falcon 9 launch

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