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FemtoBuck Constant Current LED Driver Hookup Guide v13 - learn.sparkfun.com
Build a very cheap linear LED driver and plug it to Arduino - Projects & Stories - SmartThings Community
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led - Problem with arduino controlled constant current supply with MOSFET/NPN - Electrical Engineering Stack Exchange
Driving an IR LED: constant current source or not – Arduino, ESP8266, ESP32 & Raspberry Pi stuff
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Constant Current Source, Picking a Mosfet - General Electronics - Arduino Forum