Pimpa en sparkcykel, LED dioder. Hur ska jag löda och vad behöver jag?

+ en strömbrytare

Solution 0: 4 x 2 array, 2 extra LEDs
+----|>|----|>|----|>|----|>|---/\/\/----+ R = 56 ohms
+----|>|----|>|----|>|----|>|---/\/\/----+ R = 56 ohms
+----|>|----|>|-----------------/\/\/----+ R = 270 ohms

The wizard says: In solution 0:
each 56 ohm resistor dissipates 22.4 mW
the wizard thinks ¼W resistors are fine for your application
the 270 ohm resistor dissipates 108 mW
the wizard thinks ¼W resistors are fine for your application
together, all resistors dissipate 152.8 mW
together, the diodes dissipate 400 mW
total power dissipated by the array is 552.8 mW
the array draws current of 60 mA from the source.

Solution 1: 3 x 3 array, 1 extra LED
+----|>|----|>|----|>|---/\/\/----+ R = 150 ohms
+----|>|----|>|----|>|---/\/\/----+ R = 150 ohms
+----|>|----|>|----|>|---/\/\/----+ R = 150 ohms
+----|>|-----------------/\/\/----+ R = 390 ohms

The wizard says: In solution 1:
each 150 ohm resistor dissipates 60 mW
the wizard thinks ¼W resistors are fine for your application
the 390 ohm resistor dissipates 156 mW
the wizard thinks ½W resistors are needed for your application
together, all resistors dissipate 336 mW
together, the diodes dissipate 400 mW
total power dissipated by the array is 736 mW
the array draws current of 80 mA from the source.

Solution 2: 2 x 5 array uses 10 LEDs exactly
+----|>|----|>|---/\/\/----+ R = 270 ohms
+----|>|----|>|---/\/\/----+ R = 270 ohms
+----|>|----|>|---/\/\/----+ R = 270 ohms
+----|>|----|>|---/\/\/----+ R = 270 ohms
+----|>|----|>|---/\/\/----+ R = 270 ohms

The wizard says: In solution 2:
each 270 ohm resistor dissipates 108 mW
the wizard thinks ¼W resistors are fine for your application
together, all resistors dissipate 540 mW
together, the diodes dissipate 400 mW
total power dissipated by the array is 940 mW
the array draws current of 100 mA from the source.