What follows are notes from the build of the KRZ04, a Mecanum-wheeled robot, the successor to the KRZ03.

It uses parts from the KRZ03 robot but a new chassis and wheels from goBILDA. The most recent version is using a Raspberry Pi Zero 2 W, four JGA25 brushless motors with internal controllers, and TinyFX (for LEDs and sound effects).

The KRZ04 robot

This photo shows the first build of the chassis, the day the parts arrived in the post.