Step 4Soldering
The LEDs are connected in parallel, that means that all the negative (shorter) sides are connected together and all the positive (longer) sides are connected together.
Take the wire and solder it on the LEDs. One by one connect two same sides (longer whit longer shorter whit shorter) whit wires and solder them.(picture 2,3,4 and 5)
Don't cut all the end of the LEDs, leave two, one positive (long) and one negative (short) (picture 6)
Test it. Take the 3V coin cell battery and put it on the leads in correct manner. If all is good so far the LEDs should lite up.(picture 7 and 8)
On one lead of the LED solder a longer wire. Strip a bit more of the insulation on the oposite side and bend ti. (picture 9 and 10)
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