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The original H015 in the movie is using a holonomic drive system with four omni wheels, mounted at 45 degree angles close to the corners. For simplicity (and budget), my version will simply use a drive system with two motorized wheels plus a caster wheel. I am using the same (cheap) motors that worked pretty well with my little astromech droid R3-B9. Since my H015 will be significantly lighter than my R3-B9, these motors should work particularly well.
For the chassis, I cut a piece of 1/8" plywood to fit exactly below the lower part of the body, plus the pieces which will hold the motors and the caster wheel.
The plywood pieces are glued and then the motors and caster wheel are mounted.
This base plate provides plenty of space for the Arduino and the additional electronics.
Now I have started soldering the PCBs, i.e. the shields that will be stacked on the Arduino.
But I got a little slowed down since I have also started building a HAL 9000 replica ...
For the chassis, I cut a piece of 1/8" plywood to fit exactly below the lower part of the body, plus the pieces which will hold the motors and the caster wheel.
The plywood pieces are glued and then the motors and caster wheel are mounted.
This base plate provides plenty of space for the Arduino and the additional electronics.
Now I have started soldering the PCBs, i.e. the shields that will be stacked on the Arduino.
But I got a little slowed down since I have also started building a HAL 9000 replica ...