Quantity   Component name
1 × MuffsyInputSelector shopping cart @ Mouser https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=ff6d49ef76
1 × ESP32S NodeMCU v.1.1 Shown in the "Project Details": https://hackaday.io/project/46280-muffsy-stereo-relay-input-selector#menu-details
1 × Individual components shown below: -------------------------------------------------------------------------
5 × Diode 1N4004 Mouser No: 625-1N4004-E3/53
5 × Relay, Panasonic TQ-2 5 volts Mouser No: 769-TQ2-5V
6 × Bipolar Transistor, 2N2222 Mouser No: 610-2N2222A
6 × Resistor, 1k ohms, 1/4W Mouser No: 603-MFR-25FRF521K
2 × Pin Headers, 1x19, 2.54mm/0.1" pitch Mouser No: 517-850-01-19