Thursday, November 26, 2015


Arduino KY-029 Yin Yi_2-color LED module 3MM

Same as KY-011 only different led size
Additional needed 330 Ohm resistor ( 2x)
On my version only the red led functioned the other was defective !


  • Arduino pin 10 --> resistor 330 Ohm --> Signal pin of the module   (Green)
  • Arduino pin 11 --> resistor 330 Ohm --> Middel pin of the module  (Red)
  • Arduino GND  --> module -/GND
The circuit perhaps can work without the 330 Ohm resistor, however it is strongly recommended to add the resistors!

More info

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