all turned down on the lathe to form the head of the flashlight. The head is made from three parts, each of which acts as a heat sink for the five 20-Watt CREE XHP70 LED modules. The LEDs are ...

[PatH] from WhiskeyTangoHotel choose the latter route, and built a super simple LED controller for his KLR650 bike. He chose a commonly available 18 W light bar module containing six 3 W LEDs.