Arduino Tutorial: Control a High Power 4W COB LED with Arduino Uno from Banggood.com @Educ8s

Uploaded March 2016 | Updated September 2026, 3 weeks ago

High Power LEDs are very popular and low cost nowadays so I thought it would be a good idea to learn how control them with Arduino. So, I built a simple project that simply turns on a 4W Cob LED when the button is pressed. When the button is pressed again, the LED turns off. The LED is powered by 12V battery and it is controlled by the Arduino using a MOSFET. But let's see how to build it.

💻 Code & Parts: educ8s.tv/arduino-4w-cob-led-tutorial

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Arduino Tutorial: Control a High Power 4W COB LED with Arduino Uno from Banggood.com

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