Reference
KHR-3HV Ver.3.1 Kondo Kagaku
40.1 cm
Sold out 5 of 9 specs
KHR-3HV Ver.3.1
Sold out 2025 Consumer
Kondo's long-running bipedal hobby humanoid kit, now in a 22-servo Ver.3.1 sold through the official ROBOSPOT web shop.
Overview
The KHR-3HV is Japan's best-known hobby humanoid kit, made by servo specialist Kondo Kagaku since 2009 and still in production; the current Ver.3.1 22-axis edition went on sale in July 2025. The 40 cm, roughly 1.8 kg biped is assembled from an aluminum frame with 22 KRS-2552R3HV ICS servos, an RCB-4HV control board, and a 9.9V Li-Fe battery, and is programmed via Kondo's HeartToHeart software. Kondo lists it as open-price and sells it through its official ROBOSPOT web shop, with third-party sets typically in the $1,100-1,500 range. Popular for robot fighting and dance competitions like ROBO-ONE.
Use cases
Hobby robot building ROBO-ONE and robot competitions STEM and mechatronics education
Capability evidence
- Bipedal walking and fall recoveryThe 22-DOF KHR-3HV biped walks and, thanks to a smoother knee-joint fold, is designed to get back up more easily after falling. RobAid ↗ · 2009-06
- Programmable motion libraryControlled by the RCB-4 board and Heart to Heart 4 software, the kit ships with 31 recorded motions plus 9 wireless motions and supports custom motion programming. RobAid ↗ · 2009-06
In context
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