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can anyone give me an advice on connecting an 10W led + 12 volt drive to an Arduino Uno? it works without the board but when i tried to connect to Uno it doesn't work anymore. Thankyou

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  • advice: don't do it.
    – Jot
    Mar 19, 2017 at 10:38
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    Not unless you tell us what equipment you are using...
    – Majenko
    Mar 19, 2017 at 12:16
  • Yes, Thankyou, I'm using Led Driver Driver Input Voltage: 12-24V DC Output Voltage: 9-12V Output Current: 900mA+-5% can support 10pcs high power 10W led 3 in serial and 3 in parallel ebay.com/itm/…
    – Ton
    Mar 20, 2017 at 12:04

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To operate LED using Arduino you will need a switch that can be operated using electronic switch like transistor, Mosfet or Relay board. More easy and reliable option would be using Relay Board.

You can visit this link and can get more idea....

http://www.electroschematics.com/8975/arduino-control-relay/

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  • wow, thankyou so much, this is what i bought from ebay an Led driver Input Voltage: 12-24V DC Output Voltage: 9-12V Output Current: 900mA+-5% can support 10pcs high power 10W led 3 in serial and 3 in parallel ebay.com/itm/…
    – Ton
    Mar 20, 2017 at 12:06
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You'll need a switch such as a transistor, and capable of handling 10W, to be driven by the Arduino and connect/disconnect the LED to an external 12v supply. There are many examples on the web. Remember to connect the 12v and 5v grounds together.

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