“Shopping List A breadboard (Jameco #20601, Bitsbox #CN329) with at least 30 rows. A standard 9 V battery to power the circuit. A 9 V battery clip (Jameco #11280, Bitsbox #BAT033) to connect the battery to the circuit. A standard LED (Jameco #34761, Bitsbox #OP003) A 330 Ω resistor (Jameco #661386, Bitsbox #CR25330R) for limiting the current to the LED. A polarized 1000 µF capacitor (Jameco #158298, Bitsbox #EC1KU25)”