I try to make a small robot (a cube with side of 7cm).
For mechanical components (motors and wheels), I like Pololu components : Pololu Micro Metal Gearmotor (for example : GM14a) + 32x7mm wheel (item : 1087).
I’m testing my first robot with 4 four metal Gearmotors + 4 Pololu wheels. The problem is that the 4 gearmotors use too much current.
Do you have a solution for me with : 4 wheels + 2 micro Metal Gearmotor + gear/gearing + ABS card with your laser cutting service.
The dimensions of all are 7cm x 7cm.
If it is OK, I will make a swarm robot with 20 identical robots.
If four motors use too much current for your application, have you considered using two motors and wheels with a ball caster? We also have a track set that works with a pair of micro metal gearmotors and includes two idler wheels, although I am not sure if their 9 cm total length would be too long for you.
Unfortunately, I do not have any better solutions to suggest. We do not sell a gearbox or similar mechanism that would allow you to drive a pair of wheels in tandem using a single motor, and we do not have any free-spinning wheels other than the idlers included in the track set. We are considering offering the idler wheels by themselves with a pair of tires, to match our 42x19mm wheels, but it sounds like those would still be too big for you.
