Finally I finished a first version of the code on the beautiful Robot made by ftobler. The movement of the robot is very shaky, but the design is taking attention of everyone watching the hardware. I started from scratch with the software, using the basic TOUCHOSC template adding ACCELSTEPPER library. Code is made using the Arduino ESP plug-in. Code was loaded on an ESP8266 12E module. Code and doc can be seen on git at https://github.com/rolfz/ESP8266_ZRobot_OSC
Tyres made out of ninjaflex and a front ultrasonic Holder was added. Files attached.
The last version of the software includes a Soft-AP function making the robot router independent (direct connection from iPhone/Smartphone is now possible).
Setup depends on the pieces to be printed. Wheels where printed with 100% infill, the main body which could be redesigned was filled at 50%.