Quantity   Component name
1 × Arduino Any kind of Arduino will work
1 × MCP6002 A general purpose, single supply op amp
1 × Disposable finger cuff Integrated IR LED and photodiode
1 × 5 Resistors 3 x 1 MOhm, 1 x 10 kOhm, 1 x 1 kOhm
1 × 2 Capacitors 1 x 10 nF, 1 x 560 nF,