small jumper wires
330 ohm resistor
Push button is held for 15 seconds. When releasead the LED is charged by the 10000uF (0.01F).
t =RC = 330 ohm x 0.01F = 3.3 seconds
t = 5RC (63.9%) =5 x 330 ohm x 0.01F = 16.5 seconds