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Electrical Engineering - Driving LED with NPN transistor from I/O pin
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TruOpto OSPG5111A-VW 5mm 3.3V Green LED High Brightness 15° | Rapid Online
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Revisiting Volts | All About LEDs | Adafruit Learning System
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L1: Turning on an LED - Physical Computing
L1: Turning on an LED - Physical Computing
2pcs Dc 3.3v 5v 12v 6bits Multicolor Rapid Prototyping Led 2.54mm Pin 0603 Package For Arduino Uno Mega2560 Lol Breadboard Pcb - Led Displays - AliExpress
L1: Turning on an LED - Physical Computing
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microcontroller - Can I use blue-green LEDs as MCU state indicators on 3.3 V power? - Electrical Engineering Stack Exchange
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Rasberry Pi | GPIO Examples 1 - A single LED | Gordons Projects
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Connect LED to 12v 5v and 3.3v PCI power box upgrade - YouTube
DC 3.3V 3.7V 5V LED Driver 30-1500MA Constant Current Adjustable Module PWM | eBay
LED Resistor Calculator
