Expansion hub
https://www.revrobotics.com/rev-31-1153/?searchid=0&search_query=Rev+Expansion+Hub
Potentiometer
https://www.revrobotics.com/rev-31-1155/?searchid=5350800&search_query=potenti
Rev color sensor
https://www.revrobotics.com/rev-31-1537/?searchid=5350801&search_query=color+sensor
Rev touch sensor
https://www.revrobotics.com/rev-31-1425/?searchid=5350803&search_query=touch+sensor
Rev 40:1 motor
https://www.revrobotics.com/rev-41-1301/?searchid=5350806&search_query=40%3A1+hex+motor
Rev Srs servo
https://www.revrobotics.com/rev-41-1097/?searchid=5350811&search_query=srs+servo