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How to make a string of LED's in parallel for arduino

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Step 5: LIGHT IT UP!!!

Picture of LIGHT IT UP!!!
As the title says, LIGHT IT UP!!!!!!!!!!!

Plug it into your arduino and start programming.
akellyirl1 year ago
It's best to add a resistor in series with the string to limit the current. With many LEDS in parallel without a resistor it's pretty much guaranteed that you will over-stress the pin and destroy the Microcontroller. On the other hand, adding a resistor will make the LEDs disappointingly dim. The answer is to use a Relay or Transistor to drive the string.
D3v45t4t0r2 years ago
do you know wich amount of led max can be put in linear?