4 in (100 mm) omni wheel
by VEX Robotics and others. Used in 2 builds listed here.
Where to buy
VEX Robotics: check price (unverified) single; BOM link RobotShop: EUR 22.83
Specs
| diameter | 100 mm / 4 in |
| rollers | brass-bearing rollers (RobotShop version) |
Mistakes to avoid
- Three wheels at 120 degrees make the kiwi drive; LeKiwi and XLeRobot both use three.
- The RobotShop EU listing was on backorder on 2026-10-25.
Builds that use it
LeKiwi
intermediate · $482 to $620
Three-wheel omnidirectional base carrying an SO-101 arm, with a Raspberry Pi 5 and two cameras, for mobile manipulation.
XLeRobot
intermediate · $660 to $1,000
Dual-arm household mobile robot built from two SO-101 arms, a LeKiwi-style base and an IKEA cart, starting near $660.