I built this robot also but he will not walk :)
I use not DFRduino R3 but Arduino UNO
I think the power is not sufficient! Do I need extra power to the servos or what am I wrong?
So or the servo will work but very slowly and without force.
I am quite new to this area and don't have much idea but I would like to run it on battery for my little daughter. The original Zowi can do it but also about with a 3, 7v 4040mah rechargeable battery why I not get out?
Thank you for your help and sry for the bad translation from german to English