Open architecture
Fujitsu disclosed the HOAP-1 interface architecture so users could write their own programs, which suited it to research use. [3]
Price & availability
Fujitsu has not published a price
Discontinued from 2001
Current dataset status: Discontinued.
Product overview
About Fujitsu HOAP
HOAP, short for Humanoid for Open Architecture Platform, was Fujitsu's series of small research humanoids. Fujitsu Automation made the robots. The first model, HOAP-1, went on sale in 2001 and was described as 48 cm tall and 6 kg. It was aimed at university engineering departments and robotics research, and Fujitsu disclosed its internal hardware and software interfaces so users could write their own programs.
HOAP-2 followed in 2003. HOAP-3, the last model found in the reviewed sources, entered order sales on 5 July 2005. Contemporary launch coverage and later research papers agree on a height of 60 cm and weight of 8.8 kg; one secondary article rounded the weight down to 8 kg. Academic sources give 28 degrees of freedom.
HOAP-3 runs RT-Linux on a 1.1 GHz Pentium M. It added cameras, a microphone, distance and grip-force sensors, acceleration sensing, voice and image recognition, and wired or wireless PC control. Research papers also document joint encoders, a gyroscope and four force sensors in each foot. The series is discontinued, and no current model, price or order channel was found.
Capabilities
Key features
Compact research body
HOAP-3 measures 60 cm and 8.8 kg, with 28 degrees of freedom. [4][5]
Onboard sensing
HOAP-3 adds cameras, a microphone, distance and grip-force sensing, acceleration sensing, and image and audio recognition. [4][5]
Real-time Linux
HOAP-3 runs RT-Linux on a 1.1 GHz Pentium M and exposes its internal interfaces for user programming. [4]
Hardware profile
Specifications
Official — stated by the manufacturer or organizerReported — stated by a credible third partyEstimated — derived or approximate
Body
Compute & Sensing
- Onboard compute
- 1.1 GHz Pentium M running RT-LinuxReported — stated by a credible third party[4]
Show unknown fields (11)
Mobility
- Maximum speed
- Not published
- Peak joint torque
- Not published
- Actuation
- Not published
Power
- Battery
- Not published
- Runtime
- Not published
- Charge time
- Not published
- Swappable battery
- Not published
Hands & Manipulation
- DoF per hand
- Not published
- Payload
- Not published
- Hand / end effector
- Not published
Compute & Sensing
- AI stack
- Not published
Quick answers
Fujitsu HOAP FAQ
Can you buy Fujitsu HOAP?
No general order page is verified. Fujitsu HOAP is currently classified as discontinued. [1]
How tall is Fujitsu HOAP and how much does it weigh?
Fujitsu HOAP is 60 cm tall and weighs 8.8 kg (HOAP-3; contemporary launch coverage and research papers give 8.8 kg, while New Atlas rounded to 8 kg). [4][5]
How many degrees of freedom does Fujitsu HOAP have?
Fujitsu HOAP has 28 listed degrees of freedom; HOAP-3 whole-body total. [5]
Does Fujitsu HOAP have an open SDK?
Yes. Fujitsu HOAP is recorded as providing a public developer SDK or API. [1]
Who makes Fujitsu HOAP?
Fujitsu HOAP is made by Fujitsu, based in Japan. [1]
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Evaluation footprint
Benchmarks & competitions
No benchmark embodiments or results reference this robot yet.
Related
Similar robots
Evidence
Sources
- [1]Fujitsu releases HOAP-3 programmable Linux robot (New Atlas) ↗New Atlas · press · accessed Oct 8, 2026
- [2]HOAP (Wikipedia) ↗Wikipedia · database · accessed Oct 8, 2026
- [3]HOAP-1 history page (robogaku, Japanese robotics history site) ↗robogaku · other · accessed Oct 8, 2026
- [4]HOAP-3 announced with image recognition and communication functions ↗ITmedia News · press · accessed Oct 8, 2026
- [5]A Nonlinear PID Stabilizer With Spherical Projection for Humanoids ↗IEEE-RAS International Conference on Humanoid Robots · paper · accessed Oct 8, 2026