World's First Open Source Flashlight Ergonomic Grip Rechargeable and Arduino Compatible All-Aluminum, High Quality Construction TIR Lens and Sealed Ends
Frame Shadow

1144953 3 2x 1144953 3 2x 1144953 3 2x 1144953 3 2x 1144953 3 2x 1144953 3 2x 1144953 3 2x 1144953 3 2x 1144953 3 2x

UPGRADED HexBright FLEX, 500 lm, Version3

  • Upgraded CREE XM-L2 LED
  • Rugged All-Aluminum Construction
  • USB Rechargeable and Programmable
  • Regulated light output! Stays constant!
  • High Mode - 500 Lumens/1 Hour
  • Medium Mode -  175 Lumens/8 Hours
  • Low Mode - 50 Lumens/30 Hours
  • Arduino Compatible and Open Source!
  • Includes battery, cable and wall charger
       5.7" long by 1.3" diameter, 7.6 ounces 
             (145mm by 34mm, 215 grams)

Sold Out


1144953 3 2x 1144953 3 2x 1144953 3 2x

CREE XM-L2 Replacement LED Board

If you bought a FLEX in 2013 you can replace your old XM-L LED with a brand new and improved XM-L2 LED! Give your FLEX 10% to 15% more light output for the same power. This board is a direct replacement for the original FLEX XM-L board. Use a soldering iron and a small phillips screwdriver to replace the old board with this new improved board. [NOTE: all new FLEX are now made with this improved CREE XM-L2 LED]

Sold Out

1144953 3 2x 1144953 3 2x 1144953 3 2x

HexBright Lithium-Ion Rechargeable Battery

  • Designed for the HexBright Flex!
  • Rechargeable Lithium-Ion
  • 3.7 VDC 2400 mAh
  • 4.8 Amp Protected


1144953 3 2x

HexBright Wall Charger

  • 5 Watt AC charger
  • AC Input: 100-240 V at 50/60 Hz
  • DC Output: 5VDC, 1A


1144953 3 2x

Micro-USB Cable

  • USB to Micro-USB, 20"
  • Data and Charging
  • 28 AWG Shielded


1144953 3 2x

Super-Clear PMMA FLEX Lens

If you want to fool around with the light output of your FLEX try this super-clear FLEX lens! This is a replacement part for your front FLEX lens. If you need a tool make sure you also purchase the FLEX Tool.

Sold Out

1144953 3 2x 1144953 3 2x

HexBright FLEX Tool

  • Unscrew the FLEX front retaining ring.
  • Plastic material prevents LENS scratching.


1144953 3 2x 1144953 3 2x 1144953 3 2x 1144953 3 2x


  • No mess or waste. Use only what you need!
  • Fits 50ml and 250ml LOCTITE bottles.
  • Common 24-410 thread fits most bottles.
  • Stable Y-base with optional mounting holes.
  • Made from tool-grade plastic. Will not crack!
  • Indispensable for home hobbyists, mechanics, and anyone who works with glues and dyes.
    5.25" long by 3.5" wide by 1.5" tall


Grant Imahara from MythBusters

Arduino Programming Tutorial

More Info

Schematic and Instructions


Sealed Against the Elements


There are only three entry points to get inside the HexBright FLEX.

1. At the front, sealed by an oring.

2. At the very back, sealed by a tapered rubber button cap.

3. Where the inside carrier unscrews (toward the back), sealed by an oring.

Powerful 500 Lumens!!


500 lumens is enough to punch light through your hand.

Save on x-ray bills!

Testing the Production TIR Lens

The actual beam pattern looks very good!

Beam Pattern

This is a simulation of the TIR Lens. The lens is made from PMMA, optic grade acrylic.

LED Info for the Light Enthusiasts


Pulling the  XM-L-U2 from a bin 1C right around 6500K color temp.


CRE XML Lumen Data

We are replacing the CREE XM-L bin T6 with bin U2. This means more efficient lights. Notice for the same watts (same heat generation)we have a bump in lumens for the U2.