Roomba
It has vacuumed more floor than any human in history — 40 million homes.
In one sentence
Roomba is a flat round robot that vacuums your floor by itself, decides where to clean, and goes home to charge when tired.
The wow factor
Three things that make Roomba genuinely impressive.
It uses the same path-planning maths as Mars rovers — to vacuum your bedroom.
iRobot's founders are three MIT roboticists who originally built bomb-disposal robots.
Over 40 million Roombas sold — more than any other home robot in history.
How it works
A step-by-step breakdown, in plain English.
- 1Bump sensors detect walls, cliff sensors detect stairs, and floor sensors detect carpet vs hard floor.
- 2Newer models use cameras or LIDAR to map your home and remember where to clean.
- 3It picks a coverage pattern — spiral, wall-follow, or smart-mapped — based on the room.
- 4A spinning brush plus suction pulls up dust into an internal bin.
- 5When the battery dips, it navigates to its charging dock and resumes after refilling.
Where you've probably seen it
A 2016 viral video of a cat riding a Roomba in a shark costume has 200M+ collective views. Roombas appear in dozens of films and TV shows including Modern Family and Silicon Valley.
The team behind it
Rodney Brooks, Colin Angle, and Helen Greiner — three MIT AI Lab alumni — founded iRobot in 1990. Colin Angle was CEO until 2024. The Roomba launched in 2002 and the company went public in 2005.
The full story
iRobot launched the Roomba in September 2002 at a price of $199, making it the first mass-market household robot in history. The original Roomba used simple bump-and-turn algorithms and infrared cliff sensors. Over 20+ years and a dozen generations, the Roomba has evolved to include vSLAM (visual SLAM) mapping, LiDAR navigation, room-by-room cleaning schedules, automatic dirt-disposal docks, and integration with Alexa and Google Home. iRobot has sold over 40 million Roombas and was acquired by Amazon in 2022 (deal later abandoned in 2024).
Why you should care
Roomba is the first robot most Indian families will ever own. Its design choices — circular, sensor-light, brutally simple — are a masterclass in what consumer robotics has to be.
The origin story
iRobot was founded in 1990 by MIT's Rodney Brooks, Colin Angle and Helen Greiner. They spent a decade building military and research robots — bomb-disposal Packbots — before pivoting to consumer cleaning. The first Roomba launched in 2002.
The problem it solved
Vacuuming the floor was the most mundane piece of household labour that no one wanted to automate because the previous attempts (1980s research vacuum robots) were too expensive and too unreliable.
How it actually works
The first Roomba used a deliberately simple algorithm — random walk with wall-following — instead of the expensive mapping approaches used in research labs. Modern Roombas add visual SLAM with a single camera, building a real floor plan they refine across cleaning sessions.
The drama
It almost failed
Roomba launched into a market that didn't believe consumer robots could be useful. Early reviews called it a toy. iRobot nearly ran out of cash in 2003 before holiday sales rescued the company.
The breakthrough
Roomba's volume crossed one million units in 2005 — proving consumer robotics had a real market. By 2025 the cumulative installed base passes 50 million.
Controversies
iRobot collected anonymised home floor-plan data via Roomba; in 2017 a CEO interview about selling that data triggered privacy backlash. The plan was walked back.
🇮🇳 India angle
India today: India is a fast-growing Roomba market — Eufy, Roborock and Xiaomi all sell aggressively, and Mi vacuums have become the entry-level Indian consumer robot. Even smaller cities are seeing adoption.
What India should learn: Roomba's key lesson: don't aim for technical elegance, aim for a single chore done autonomously and cheaply. India needs Indian-priced consumer robots — ₹5,000 mop robots that survive Indian floors, dust, hair and power cuts.
The wow facts
1
The original Roomba used the same random-walk algorithm as the Packbot bomb-disposal robot — iRobot literally repurposed a military behaviour for vacuuming.
2
Modern Roombas can dock, empty their own bin and refill water tanks.
3
iRobot was nearly bought by Amazon in 2022 — the deal collapsed under EU competition review.
The legacy
Roomba normalised home robotics. Every household robot launched after it — robot mops, lawn mowers, pool cleaners — owes its existence to Roomba's commercial viability.
Economic impact
iRobot's market created a global consumer-robotics industry now worth ~$10B annually. Chinese competitors (Roborock, Xiaomi, Eufy) drove prices from $200 in 2002 to under $30 by 2024.
Jobs affected
Domestic-help economics in Indian metros — typical maid wages and time saved per household. Robot vacuums don't replace the maid, but they shift what people pay her to do.
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Family tree
The predecessors and successors of Roomba.
- Roomba 400(2002)
- Roomba 700(2011)
- Roomba 900(2015)
- Roomba j7(2021)
- Roomba (current)(2024)
Roomba in 2 minutes
Learn the science behind Roomba
Three Atlas entries that explain how Roomba actually works.
Mind-blowing facts
iRobot was founded by three MIT roboticists who originally built bomb-disposal robots for the US military.
The Roomba uses the same path-planning math as Mars rovers — just to clean your bedroom.
iRobot has sold over 40 million Roombas — more than any other home robot in history.