Mechanical Design and Assessment of a Low-Cost 7-DOF Prosthetic Arm for Shoulder Disarticulation

Table 1

Cost of the components used to build the prototype.

Component	Total price (USD)
3 gear motors	42
1 servomotor PDI-6221MG	13
3 servomotor MG966R	14
Bearings	6
3D-printed parts	215
Total	290