War, huh, what is it good for? Absolutely nothing, except as an excuse to build a Raspberry Pi powered sentry turret that will track and fire upon your enemies. That’s what [Matt Desmaris ...

"I was very surprised when I saw the price it was selling for, and couldn't believe the price I got it at," Matthew told Newsweek.

Using our favorite SBC, he's brought to life the creepy sentry turret from the 'Portal' franchise—albeit a stationary one without bullets that's still sure to strike fear in anyone familiar with ...

An automated turret with an extremely high rate of fire. Caution: does not check if friendly units are in line of fire. The A/G-16 Gatling Sentry will be available for players once reaching level ...

A turret firing powerful shells in a high arc. Effective at long ranges, and able to strike at targets behind cover. The A/M-12 Mortar Sentry will be available for players once reaching level 8 ...