Want to share this project with some more people being familiar with "slightly bigger" flashlights, so this project is also posted on CPF, for those of you using both platforms.
After some Months of development and build time, it is nearly finished now:
- around 1.5 kW maximum power
- >100.000 Lumen total output
- intensity >1Mcd
- 3kg weight
- four groups of light:
- 1x SBT90.2 behind 62mm TIR optic (tight spot, 560kcd)
- 4x SBT90.2 behind 30mm TIR optics (medium spot, 500kcd)
- 8x XHP50.2 in 20mm reflectors (medium width, 160kcd)
- 8x XHP70.2 without optics (wide flood)
- 3x buck regulator to drive SBT90.2 at 38A and 4x 33A
- 4x boost regulator to drive each 4x XHP50/70 at up to 12A
- 150Wh battery
- 8x 21700 INR21700-40T
- 4x 18650 US18650VTC5A
- 12 lighted buttons for direct access
- Spot tight more/less
- Spot wide more/less
- Mid more/less
- Flood more/less
- ALL_ON
- Tactical Flash Mode
- Momentary spot tight full, all other off
- Momentary spot tight and spot wide full, all other off
- OLED display for extended info/status
- 2x RGB LED for battery status
- 36W charging circuitry built in, accepting 5V....12V
- USB-C or magnetic tabs for charging
- integrated battery monitoring and balancing circuitry
- vibration motor for important hints like low-bat warning etc.
- multiple temperature sensors (and certainly power foldback upon overheating)
- heatpipes to spread heat from head to body
Will add some beamshots later....
View on the front, protective window still missing (will be delivered mid April)
Here the ALL_ON button was pressed, adjusting all channels to ~75% power
Bringup stage of development process:
Heat of DC/DC converters is conducted through PCB to backside of PCB
many, many threaded holes had to be made....combiantion of alu and copper to keep weight manageble
Short video showing ALL_ON in action:
Size comparison to the light I built before (the samller has 18650 cell, 4x XPL2 for flood and XHP35+20mm TIR spot, 6000Lumen peak, 35kCd; the larger 21700 cell, 4x XHP50.2 flood, XHP35+30mm TIR spot, 12000Lumen peak, 76kCd):