Buzz
The term 'robot' was first introduced by Karel Capek in his sci-fi play R.U.R. ('Rossum's Universal Robots'), where it described an artificial human. It originates from the Czech word robotnik, which means 'worker.'
While contemporary robots have evolved with the digital revolution and breakthroughs in artificial intelligence, the foundational analog mechanisms that replicate human or animal actions date back far. Even for those who aren't particularly interested in robotics, these ancient inventions captivate with their brilliance. Crafted without electricity or precise tools, they stand as a tribute to human ingenuity.
10. The Moving Statues
Ancient literature is filled with stories of artificial humans. Notable examples include references to android servants in Homer's Iliad and moving statues created by Daedalus, the father of the famed Icarus. The Greeks also tell of Hephaistos, who gave King Minos of Crete a massive metal man called Talos, designed to protect his kingdom. Talos was nearly invincible, with the only weak spot being his ankle, where a fluid-carrying pipe ran close to the metal exterior. Talos met his end when the ankle was pierced and the pipe severed.
Ancient Egyptian legends also speak of moving statues, one of which was reportedly crafted by priests of Ammon around 1100 B.C. This statue supposedly selected the next pharaoh by extending its arm and choosing a male member of the royal family. These statues served as powerful religious symbols, with Egyptians believing they were the vessels through which the soul was reincarnated.
These machines may not have been mere myth. Historical records suggest that ancient Egyptians possessed enough knowledge of basic mechanical principles to construct non-digital robots, or automata. Their typical design involved an intricate system of ropes and pulleys. A sacred flame would be ignited, heating the air and causing it to expand, thus triggering the system.
This technique evolved and became more sophisticated over time. The Greek inventor Ctesibius of Alexandria created an automaton powered by cams (disc-shaped devices), which allowed it to sit or stand as it moved during a procession. While none of Ctesibius’s original writings survive, later engineers refer to his designs for automata powered by hydraulics, steam, and pneumatics. Though the technology of the era only permitted limited, repetitive movements, we can trace the beginnings of robotics to Ctesibius.
9. The Claw
Technically, Archimedes’s crane-like weapon wasn't a robot, as it required a crane operator. However, the Claw was a precursor to the industrial robotic arm seen in modern factories. It was capable of lifting enemy ships entirely out of the water and flipping them over.
The Claw was used against the Roman invaders of Syracuse in 213 B.C. The historian Polybius described the event as the Roman ships approached the city's sea-facing walls. The massive hand descended onto a target vessel, 'lifting the ship’s prow out of the water and standing it upright on its stern.' The operator then 'secured the machine to make it immovable, and by some sort of release mechanism, detached the grappling hook and chain. The ships were either capsized, severely tilted, or became filled with confusion and much seawater.'
Plutarch adds, 'At times, a terrifying sight would unfold as a ship was hoisted completely out of the water, swung into the air, and spun around, until every man aboard was shaken out and thrown in different directions, after which the ship would be dashed down empty upon the walls.'
The Claw was a practical application of two of Archimedes' fundamental principles: the law of the lever and the law of buoyancy, used to overpower ships weighing several tons. Understanding forces and equilibrium allowed for the calculation of the minimal force needed to overturn a galley.
There is no concrete evidence that Archimedes personally built this superweapon, and ancient accounts might have exaggerated its effectiveness, even if it was ever used. Nevertheless, recent experiments by engineers have confirmed that the Claw was technologically feasible at the time.
8. The Maidservant of Philon
Philon of Byzantium, the Greek inventor who passed away around 220 B.C., earned the title 'Mechanicus' for his exceptional engineering expertise. Most of what we know about him comes from his only surviving work, the nine-volume Compendium of Mechanics. He lived after Ctesibius and continued exploring his predecessor’s work in hydraulics and pneumatics.
In Book Five of Mechanics, specifically the Pneumatica (a treatise on devices powered by air or water pressure), Philon describes an automaton he created: a female robot holding a jug of wine in her right hand. When a cup was placed in her left hand, she would pour the wine into it, even adding water to mix it with the wine as requested. Through an intricate network of containers, tubes, air pipes, and winding springs, which interacted based on changes in weight, air pressure, and vacuum, Philon built an automaton capable of performing practical tasks instead of just being a religious or ceremonial prop.
However, the widespread availability of expendable slave labor made such robots unnecessary. The potential of robotics would have to wait for a future time to fully unfold. Nonetheless, Philon’s work inspired the next generation of scientists, especially Hero of Alexandria, and his ideas influenced Islamic science in the Middle Ages.
7. Hero of Alexandria’s Programmable Robot
Hero (or Heron) of Alexandria (A.D. 10–70) is considered by many to be the greatest inventor of ancient times. Among his brilliant creations were coin-operated holy water dispensers (the precursor to the modern vending machine), automatic doors, and the aeolipile, which utilized steam power 1,700 years before James Watt’s steam engine. However, one of Hero’s most impressive inventions was the first programmable robot, created in A.D. 60.
The device was a three-wheeled cart that transported other robots onto a stage to perform for an audience. A falling weight applied tension to a rope wrapped around the cart’s two independent axles. By manipulating the axle’s pegs, Hero could control how the rope was wound around the axles, effectively programming the robot’s movement path and direction in advance. Hero also offered a practical tip: friction could cause issues, so the machine needed a smooth surface to function properly.
Noel Sharkey, a computer scientist at the University of Sheffield, regards this rope-based control mechanism as comparable to modern binary programming. The same principle was used in the operation of early punch cards. In the video above, Hero’s robot is brought to life, recreated by modern engineers using Hero’s own descriptions.
6. Leonardo’s Knight and Lion
When discussing ancient robots, the question often arises—did Leonardo da Vinci build one? Given his extraordinary genius, it’s no surprise that Leonardo explored the concept of artificial humans and animals.
Leonardo studied Hero’s work and blended the scientist’s ideas with his own expertise in anatomy, metalworking, and sculpture to craft his own artificial creations. With a deep understanding of human and animal movement mechanics (kinesiology), Leonardo constructed mechanical models of muscles and joints. It’s possible that the missing pages from his Codex Atlanticus (c. 1497) included plans for robots.
For a Milanese pageant, Leonardo designed an armored knight capable of independent motion. Using pulleys, weights, and gears, the knight could sit, stand, turn its head, and raise its visor. Roboticist Mark Rosheim reconstructed the knight in 2002 based on surviving descriptions. Leonardo’s robotic designs were so innovative that they later influenced Rosheim’s own robots for NASA.
Another of Leonardo’s creations was a lion presented to King Francis I of France in 1515, which could walk on its own. When it stopped, its chest opened to reveal bouquets of lilies and flowers. In 2009, this lion was reconstructed from Leonardo’s surviving sketches, as shown in this video.
5. The Praying Monk
Gianello Torriano was regarded as one of the finest Italian clockmakers of the 16th century. He became part of Emperor Charles V's service in 1529 and accompanied him to the San Yustre monastery after Charles’s abdication in 1555. Torriano sought to ease the emperor’s melancholy by creating small automata for his amusement.
Torriano created tiny soldiers that fought on the dining table. He is also said to have crafted wooden birds that flew around the room and even out the windows. One of his automata, the Lady Lute Player, is now housed at the Kunsthistorisches Museum in Vienna. Although it no longer works, it was once capable of making small tripping steps in a straight or circular path, strumming the lute with its right hand, and turning its head.
The Smithsonian Institute houses a functioning creation attributed to Torriano—the 39-centimeter (15 in) Praying Monk. This wooden and iron automaton walks in a square, beats its chest with its right arm, and raises and lowers a rosary with its left, occasionally kissing it. It can turn, nod its head, roll its eyes, and murmur silent prayers with its lips.
A legend tells of Don Carlos, the teenage son of Philip II, who was dying from a head injury caused by a fall. As Spain prayed for a miracle, the bones of the monk Diego de Alcala, who had been dead for a century, were placed beside him. That night, the friar appeared to Don Carlos, assuring him of his recovery. After regaining consciousness and recovering, Philip commissioned Torriano to create a statue of Fray Diego. The penitential monk, a feat of scientific craftsmanship, was Philip’s response to the miracle. San Diego, California was named after Fray Diego de Alcala.
4. Karakuri Ningyo
The Japanese fascination with robots dates back hundreds of years. The first robots in Japan were created during the Edo Period (1603–1868). These were known as karakuri ningyo, or “mechanical dolls,” and were made of wood, string, and cogs. The Japanese also integrated Western clockwork technology into the design of these automata.
The most common type were the zashiki karakuri, small household robots designed for entertainment. One example of this recreation was a robot that could shoot arrows with a bow. On a more practical side, some karakuri robots were even designed to serve guests tea. Similar to Philon’s maidservant mechanism, the karakuri could be activated by placing a teacup in its hands. Like Hero’s robot cart, an adjustable spring allowed the automaton to be programmed to move to one of two positions on a straw mat.
There were also the dashi karakuri, which were used in religious festival processions, much like Ctesibius’s moving statues. These automata performed ancient myths and legends. Additionally, the butai karakuri, or theater automata, were inspired by Hero of Alexandria’s statues. The Japanese were so amazed by the performances of these mechanical actors that human performers began imitating their movements.
3. The Drawing Boy
On display at the Franklin Institute in Philadelphia, the two-century-old automaton called ‘The Drawing Boy’ continues the legacy of mechanical wonders started by The Writer. The Drawing Boy was the creation of Swiss watchmaker Henri Maillardet, and, like The Writer, it influenced Martin Scorsese’s film Hugo, where an automaton plays a key role.
The Drawing Boy is remarkable for its intricate design. A set of rotating brass cams meticulously controls the fluid, lifelike motion of its arms. It’s not just about basic geometry, like moving the arm along the x, y, or z axes. For example, drawing a diagonal line requires the arm to move backward while shifting side to side—without this, it would draw an arc instead.
Once wound up, the automaton can create a drawing in roughly three minutes. This requires several cams, and if a new drawing is requested, the stack of cams must be shifted by 3 millimeters (0.13 inches), or the process will fail. This incredible accuracy is achieved through parts mostly crafted by hand. The cams act as read-only memory, allowing The Boy to write three poems (two in French and one in English) and make four drawings, including one of a Chinese temple.
A pair of simpler cams control the movements of the eyes and head. In a fascinating moment of performance, The Boy pauses writing as the cam stack shifts, raises its head, and looks around with its eyes, seemingly pondering what to draw next. It then lowers its head, and the arm continues its task.
2. The Writer
At the Neuchatel Museum of Art and History, located west of Bern, Switzerland, a three-year-old barefoot boy sits at a mahogany desk, writing full letters with a goose feather quill in its right hand. What might first appear as a charming toy is, in fact, an engineering marvel: the precursor to the modern computer. A closer look reveals the boy’s eyes following his work, even shaking the quill after dipping it into the inkstand.
Constructed by Swiss-born watchmaker Pierre Jacquet-Droz in the late 1770s, The Writer’s 6,000 specially crafted components function together to form a completely self-contained programmable writing machine. The boy is powered by a crank that winds the mainsprings. It can write any custom text up to 40 characters in length with a maximum of four lines, thanks to 40 cams that work like a read-only program. This programming system disk enables the automaton to write independently, even allowing it to resume writing in the middle of a sentence and switch to a different composition if needed.
Jacquet-Droz had long astounded with his lifelike automata. At the court of King Ferdinand VI of Spain, his creations were so convincing that many believed they were the work of witchcraft. To avoid charges of sorcery by the Inquisition, Jacquet-Droz invited the Grand Inquisitor to inspect his robot and its inner workings to prove that it operated through purely natural mechanisms.
The Writer is part of a trio of androids Jacquet-Droz built between 1767 and 1774. The other two, less intricate than The Writer, are the Lady Musician and the Draftsman. What sets these robots apart is their use of miniaturization. All the internal mechanisms that control the androids are housed within their bodies, unlike previous designs where the mechanisms were separate and housed in external furniture. This miniaturization made it more challenging to synchronize all components, which makes these robots, still operational over 200 years later, even more impressive.
1. The Flute Player
Voltaire famously referred to mechanical genius Jacques de Vaucanson as the "new Prometheus" due to his seemingly magical ability to breathe life into lifeless materials. As a child, Jacques became fascinated with a church clock, and while waiting for his mother to finish her confession, he memorized all its components and later recreated it at home. His fascination with automata grew, and one day, after falling ill, he had a feverish dream of an android flute player. Upon recovering, he immediately set to work building the robot.
First shown to the public on February 11, 1738, The Flute Player was an extraordinarily complex machine to construct, particularly because the flute is notoriously difficult for even real humans to play in tune. Producing notes on the flute requires not just finger dexterity and breath control but also the right amount of air and how the lips are shaped. Yet, Jacques de Vaucanson successfully created a robot that could play 12 different tunes. He engineered mechanisms that replicated every muscle needed to play the flute.
Using a system of bellows, pipes, and weights, Jacques was able to regulate the airflow through the flute. He crafted the lips to open and close, as well as move forward and backward. A metal tongue was incorporated to control the air flow and introduce pauses. Jacques’s robot could even breathe.
Jacques’s challenge with the fingers was that while his levers produced the correct motions, the wooden fingers were too stiff to produce the right sounds. To replicate real human fingers, Jacques fitted them with actual skin to make them more pliable.
In addition to The Flute Player, Jacques de Vaucanson built several other automata, the most famous being a duck that defecated after eating. However, unlike The Flute Player, the duck was more of a whimsical trick than a serious attempt to replicate the full functionality of a living creature.
