While there are advantages to using disposable batteries over rechargeables or a wired connection, keeping them healthy can ...

But if you don’t need the value-added features such as a weather-resistant housing that can be chained to a tree, this DIY motion ... sensor and an optoisolator, with a battery, a plug for the ...

The iPhone camera ... image sensor. That’s capturing better slow-motion video. The TR layer would allow the sensor to handle high-speed data, the kind that suits such shooting modes.