Suppose you traveled back in time—say 40,000 years into the past—and then you got stuck. What would you do? How would you rebuild all the stuff that you like? That's the premise of the book How to ...

An RF Beacon is a circuit that produces a continuous pulse that helps with tracking down an item or vehicle. One use for such a beacon would be to locate a rocket when it comes back down too far away ...

There are two different modes to interface the MULTI-Module and the transmitter: PPM and Serial. The considerations are different for each. PPM is more generic, easy to implement and will work with ...

This is probably something that you wouldn’t want kids to read about, but it’s still cool nonetheless. Lucid Science is giving ideas on spy gadgets once again, and this time its a tiny FM transmitter.