Update to support adding batteries and luxeon LEDs for people who don't want to use one of the flash light upgrades.

Battery adapter use Keystone 209 contacts: https://www.amazon.com/Keystone-209-Battery-Contact-Plating/dp/B06VTPWM6M

18650 uses a charge/discharge circuit. It only puts out 4.2v https://www.amazon.com/Charging-Lithium-Battery-Charger-Protection/dp/B08X6G26Q8

Lens adapter uses a 20mm by 5 degree LED lens and any 1-3w RGB LED: https://www.amazon.com/uxcell-Degree-Black-Holder-Power/dp/B07D9DTLZG https://www.adafruit.com/product/2524

Current Driver is 1000ma constant current driver or resistors based on your voltage (4.2v 2x 3.9 ohm resistor, 6v 2 x 4.7 ohm resistors, 9v 2 x 9.1 ohm resistor) https://www.amazon.com/LuxDrive-Wired-BuckPuck-Constant-Potentiometer/dp/B00LWU1V3W

SP8T switch is 1 input with 8 output options https://www.adafruit.com/product/2925

Blade is 1" OD x 3/4" ID Polycarbonate tube https://www.mcmaster.com/8585K201/

Diffuser is Cellphone wrap (8ft) https://www.michaels.com/celebrate-it-transparent-packaging-wrap-clear/10302775.html

Video guide https://www.youtube.com/watch?v=AB8VljhbPEY Build your own DIY multicolor Lightsaber on a $14 budget!