Lighting Costs Cut By 90% Using Intelligent LEDs

A company called Digital Lumens has introduced product that networks LED lights together to form an “intelligent” lighting system. The system can turn on lights if people are present in a room, and adjust brightness levels over the course of a day. Overall, the system can cut lighting costs by 90% for commercial sites like warehouses. A real world example is …

Charging USB Devices With AA Batteries

Charging USB Devices With AA Batteries

In this article, we will share with you some devices that use AA batteries to charge USB-powered small electronics. These devices provide a convenient way to stretch the time between wall outlet recharges.

LED Lamps That Glow With Warm White Light

LED Lamps With Warm White Illumination: Koncept Z-Bar ($165) and i-Tower ($195) Pablo Designs LIM L Floor ($350) Cree XLamp XR-E Warm White LED Lantern ($25) The color temperature of light is measured in degrees Kelvin. Lower-temperature white LEDs (around 2,000-4,000 K) are warm (yellowish white) like incandescent bulbs. White LEDs with higher color temperatures (above 5,000 K) are cool …

The Best Electric Boat Motors


The Best Electric Boat Motors: Minn Kota Endura C2 30 ($99) Minn Kota Endura C2 55 ($257) MotorGuide VariMAX V55 – Freshwater, Pontoon Mount ($414) Torqeedo Travel 1003 ($1,999) Compared to gasoline-powered boat motors, electric outboard motors provide quieter operation, no exhaust fumes and zero emissions. Electrics are great as the primary means of propulsion for small boats, a secondary …