Quantity   Component name
1 × ESP32 + 0.96" OLED Provides CPU, wifi communications, battery charger, and OLED Display for less than $10
1 × MFRC522 RFID Scanner, mounted to the back of the device
4 × Momentary Switches To provide input from the players
1 × Raspberry Pi To run as the back-end central server - though this could be any wifi-based computer
1 × 3.7v Lipo battery we used 1100mah
1 × 3d printed case Case