22-axis hobby biped kit
The Ver.3.1 kit has 17 servos plus five extension servos for arm, leg and waist yaw joints, giving 22 axes. [1]
Price & availability
$1,091
Msrp · USD · OfficialOfficial — stated by the manufacturer or organizer
Original price: JPY 172,480 including tax
Source: KHR-3HV Ver.3.1 22-axis kit official shop listing ↗ · Oct 8, 2026
Official ROBOSPOT web-shop price; converted at about JPY 158.1 per USD on 8 October 2026. The item was marked out of stock when checked.
Available to order from Jun 2009
Current dataset status: Commercial.
Official ROBOSPOT listing for the 22-axis Ver.3.1 kit; marked out of stock on 8 October 2026. [4]
Other quoted prices
Historical, launch and third-party figures remain separated from the current price.
- ~$1,8002012 · Press
About $1,800
Approximate market price stated by Robaid when the page was written (around 2012); not an official price
Kondo Kagaku KHR-3HV humanoid kit robot ↗
Product overview
About Kondo Kagaku KHR-3HV
The KHR-3HV is a bipedal hobby robot kit from Kondo Kagaku, a Tokyo company better known for its KO PROPO radio-control equipment. Robaid dates the original KHR-3HV to June 2009. The current Ver.3.1 kit stands about 40 cm tall and is sold in a 22-axis configuration.
Kondo's product page describes a 17-servo base kit plus five extension servos for arm, leg and waist yaw joints. The assembled 22-axis version weighs about 1.8 kg and includes a 9.9 V, 850 mAh Li-Fe battery, G3 charger and RCB-4HV controller. HeartToHeart4 motion software and a Python library for external control are available.
The kit has no sensors as supplied; Kondo sells a KRG-5A gyro and RAS-3A accelerometer separately. The official ROBOSPOT shop lists the 22-axis Ver.3.1 kit at ¥172,480 including tax, equivalent to about US$1,091 at the 8 October 2026 exchange rate, but marked it out of stock when checked. Robaid's approximate US$1,800 figure from 2012 remains only as price history.
Capabilities
Key features
Battery and controller included
The kit includes a 9.9 V, 850 mAh lithium-iron battery and a G3 charger, along with an RCB-4HV controller board. [1]
Programmable with HeartToHeart4 and Python
Kondo's software includes HeartToHeart4, with sample motions such as walking, standing up, kicks, punches and handstands, plus a Python library for the RCB-4HV. [1]
No sensors in the kit
The kit ships without a gyro or accelerometer. Kondo sells the KRG-5A gyro and RAS-3A accelerometer as separate options. [1]
Released in 2009
Robaid dates the original KHR-3HV to 13 June 2009, when Kondo released it for its fifth anniversary. [3]
Hardware profile
Specifications
Official — stated by the manufacturer or organizerReported — stated by a credible third partyEstimated — derived or approximate
Body
Mobility
Power
- Battery
- 0.01 kWhOfficial — stated by the manufacturer or organizer[1]ROBO Power Cell F3-850, 9.9 V x 850 mAh (about 8.4 Wh)
Hands & Manipulation
- DoF per hand
- 0Official — stated by the manufacturer or organizer[1]No articulated hand joints in the 22-axis layout
Compute & Sensing
- Onboard compute
- RCB-4HV control boardOfficial — stated by the manufacturer or organizer[1]Controller board; no separate onboard computer listed
Show unknown fields (9)
Mobility
- Maximum speed
- Not published
- Peak joint torque
- Not published
Power
- Runtime
- Not published
- Charge time
- Not published
- Swappable battery
- Not published
Hands & Manipulation
- Payload
- Not published
- Hand / end effector
- Not published
Compute & Sensing
- Sensors
- Not published
- AI stack
- Not published
Quick answers
Kondo Kagaku KHR-3HV FAQ
How much does Kondo Kagaku KHR-3HV cost?
Kondo Kagaku KHR-3HV is listed at $1,091 (Msrp, official). The source also states JPY 172,480 including tax. [4][5]
Can you buy Kondo Kagaku KHR-3HV?
Yes. Kondo Kagaku KHR-3HV has a verified official order or preorder page and availability is listed from Jun 2009. [4]
How tall is Kondo Kagaku KHR-3HV and how much does it weigh?
Kondo Kagaku KHR-3HV is 40.1 cm tall and weighs 1.8 kg (About 1,800 g for the Ver.3.1 22-axis kit). [1]
How many degrees of freedom does Kondo Kagaku KHR-3HV have?
Kondo Kagaku KHR-3HV has 22 listed degrees of freedom; 17 servos plus 5 extension servos. [1]
Does Kondo Kagaku KHR-3HV have an open SDK?
Yes. Kondo Kagaku KHR-3HV is recorded as providing a public developer SDK or API. [1]
Who makes Kondo Kagaku KHR-3HV?
Kondo Kagaku KHR-3HV is made by Kondo Kagaku, 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]KHR-3HV Ver.3.1 (22-axis) product page ↗Kondo Kagaku · official · accessed Oct 8, 2026
- [2]KHR series product list ↗Kondo Kagaku · official · accessed Oct 8, 2026
- [3]Kondo Kagaku KHR-3HV humanoid kit robot ↗Robaid · database · accessed Oct 8, 2026
- [4]KHR-3HV Ver.3.1 22-axis kit official shop listing ↗ROBOSPOT / Kondo Kagaku · official · accessed Oct 8, 2026
- [5]USD/JPY exchange rate on 8 October 2026 ↗Wise · database · accessed Oct 8, 2026