XYZ Printing’s higher-end family 3D printer is a richly featured, robust machine at a reasonable price, although there are a few flaws that stop it from being truly perfect. Some good design features make it generally easy to use, and with both WiFi and cabled connectivity it’s suitable for almost any situation.
The da Vinci 1.1 Plus does not lead in print quality – there are better print results out there – but in general we were very happy with the results, and the majority of users would be unlikely to think the machine was lacking in this area.
The touchscreen interface is generally easy to use, and it’s not hard to get going on your own print, which should make it an appealing option for families and less techy types.
The machine also features a built-in gallery of downloadable designs to print, and comes with software to allow you to sculpt your own designs. This makes it a great option for newcomers to 3D printing and families looking to get their kids involved in the whole process.
The price is also very reasonable given the features, at €799 or $699.
However, the machine could come with better arranged guides; these are hidden away on a memory stick, in a mixture of pdfs and videos, making it sometimes difficult to locate a specific issue. There are also some rather poor translations on the printer’s touch screen interface, which don’t help the problem.
The da Vinci 1.1 Plus is a excellent, if a little flawed 3D printer, and well worth considering if you’re looking for a capable first machine.
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Researchers have found a running style for six-legged robots that significantly improves on the traditional nature-inspired method of movement.
The research, conducted by scientists at the École Polytechnique Fédérale de Lausanne (EPFL) and the University of Lausanne (UNIL) in Switzerland, found that as long as the robots are not equipped with insect-like adhesive pads, it is faster for them to move with only two legs on the ground at any given time.
Robotics has in the past few years made heavy use of biomimicry – the practice of mimicking natural systems – resulting in six-legged robots being designed to move like insects. In nature, insects use what is known as a tripod gait, where they have three legs on the ground at a time, so it had been assumed that this was the most efficient way for similarly legged robots to move.
However, by undertaking a series of computer simulations, tests on robots and experiments on Drosophila melanogaster – better known as the common fruit fly – the scientists found that the two-legged approach, which they have dubbed the bipod gait, results in faster and more efficient movement.
The core goal of the research, which is published today in the journal Nature Communications, was to confirm whether the long-held assumption that a tripod gait was best was indeed correct.
“We wanted to determine why insects use a tripod gait and identify whether it is, indeed, the fastest way for six-legged animals and robots to walk,” said Pavan Ramdya, study co-lead and corresponding author.
Initially, this involved the use of a simulated insect model based on the common fruit fly and an algorithm designed to mimic different evolutionary stages. This algorithm simulated different potential gaits to create a shortlist of those that it deemed to be the fastest.
This, however, shed light on why insects have a tripod gait – and why it may not be the best option for robots. The simulations showed that the traditional tripod gait works in combination with the adhesive pad found on the ends of insects’ legs to make climbing over vertical surfaces such as rocks easier and quicker.
Robots, however, are typically designed to walk along flat surfaces, and so the benefits of such a gait are lost.
“Our findings support the idea that insects use a tripod gait to most effectively walk on surfaces in three dimensions, and because their legs have adhesive properties. This confirms a long-standing biological hypothesis,” said Ramdya. “Ground robots should therefore break free from only using the tripod gait”.
Study co-lead authors Robin Thandiackal (left) and Pavan Ramdya with the six-legged robot used in the research. Images courtesy of EPFL/Alain Herzog
To for always corroborate the simulation’s findings, the researchers built a six-legged robot that could move either with a bipod or tripod gait, and which quickly confirmed the research by being faster when moving with just two legs on the ground at once.
However, they went further by confirming that the adhesive pads were in fact playing a role in the insect’s tripod movement.
They did this by equipping the fruit flies with tiny polymer boots that would cover the adhesive pads, and so remove their role in the way the insects moved. The flies’ responses confirms their theory: they began moving with a bipod-like gate rather than their conventional tripod-style movement.
“This result shows that, unlike most robots, animals can adapt to find new ways of walking under new circumstances,” said study co-lead author Robin Thandiackal.
As bizarre as the research sounds, it provides valuable new insights both for roboticists and biologists, and could lead to a new standard in the way that six legged robots are designed to move.
“There is a natural dialogue between robotics and biology: Many robot designers are inspired by nature and biologists can use robots to better understand the behavior of animal species,” added Thandiackal. “We believe that our work represents an important contribution to the study of animal and robotic locomotion.”