You Reply: Thank you very much for the information. Truly helpful!
If I may also ask, as far as the line tracking sensor and ultrasonic sensor, do I need more than one? meaning, will using 3 or 4 line tracking sensors instead of 1 improve the robot's performance at that task, or the increase is not worth the extra sensors?
Also, I just realized that there is a new Romeo BLE. Apart from the Bluetooth capability, is there any other extra benefit when compared with the V2 or V1 model?
Thank you again for your time and help!