3 Simple Ways to Light an Led Bulb with a Battery - wikiHow
uxcell 5mm LED Diode Lights - 100pcs Red Lights Diodes DC1.8-2V Bulb Lamps Light Emitting Diode: Amazon.com: Industrial & Scientific
W-1048-OAG | No Brand LED Indicator, Green, 8.2mm, 2V, | Distrelec Germany
Amazon.com: CHANZON 100 pcs 5mm White LED Diode Lights (Clear Round Transparent DC 3V 20mA) Bright Lighting Bulb Lamps Electronics Components Indicator Light Emitting Diodes for Arduino : Industrial & Scientific
Light-Emitting Diodes (LEDs) - learn.sparkfun.com
L1: Turning on an LED - Physical Computing
Kingbright L-7113IT 5mm 2V Red LED 80mcd | Rapid Online
Amazon.com: Tenmiro Led Lights for Bedroom 100ft (2 Rolls of 50ft) Music Sync Color Changing LED Strip Lights with Remote and App Control 5050 RGB LED Strip, LED Lights for Room Home
How Does a 5mm LED Work? - LEDSupply Blog
What happens when you force 3V onto a 2V LED? - Build Electronic Circuits
Light Emitting Diodes
3mm LED Diode Lights - 30 Pack Red Lights Diodes DC 1.8-2V Bulb Light Emitting Diode - Walmart.com