It’s a xylophone robot. It has two hammers (which act as arms) which hit xylophones blades with two motors (there is a motor for each hammer). Jahlbo has a sound box fixed on the hips. The sound box is composed of two parts which have a hole, to amplify the sound. The frame where the blades are fixed rotates around the sound box. Finally Jahlbo has eight motors to function.
By Edwin, Raphael, Thibaud, Jérémy M. and Louis