Gun turret built into a cake box

tupperware-airsoft-turret

Couch potatoes have a new line of defense thanks to this remote-controlled turret. The gun itself is a hacked down airsoft model. The mount started with a servo motor in the center of a plastic cake box. A thin strip of plywood was added, along with a couple of sliding furniture feet to stabilize the platform as it rotates. A second servo mounts to that platform, which allows the trajectory of … [Read more...]

Kapton tape aids in drag soldering surface mount parts

kapton-tape-aids-in-drag-soldering

Drag soldering works exactly as its name implies, by dragging a bead of solder across fine-pitch pins you can quickly solder an entire row. The method relies on clean joints, so liquid solder flux is often used to make sure there is good flow. But if you're drag soldering on boards that you've etched yourself the solder can sometimes run down the trace, rather than staying where you want it. … [Read more...]

Aftermarket Visor-mounted GPS better than OEM

mini_gps

When [Roberto] bought his Mini Cooper, he opted to forgo the factory GPS system as it was over priced and didn’t have the best of reputations. He decided that he still needed GPS in his car, so he committed himself to install a TomTom unit in a way that would not detract from the car’s interior. He dismantled the driver’s side sun visor, taking measurements of the original plastic housing … [Read more...]

Adjustable prank box growls and screams

growling_altoids_tin

[Brett] over at FightCube was tossing around ideas to build a screaming prank circuit that fits inside an Altoids tin. Sound familiar? We featured a story just a few days back about the construction of a very similar item by [Dino Segovis]. It seems that great minds think alike after all! [Brett’s] version is a bit more robust than the one we featured the other day. It’s similar to … [Read more...]

Using your PC as a simple signal generator

dc_offset_circuit

[Debraj] needed a simple signal generator for a project he was working on, but didn’t have one handy. He found that the easiest and cheapest way to get clean, reliable signaling was by using something that was already sitting on his desk - his PC. He found that the tone generator built into Audacity was quite useful, at least for generating waveforms at less than 20 KHz or so. Upon plugging … [Read more...]

Hacking game port peripherals to work with modern PCs

gameport_hack

[Atiti] has a bad habit of hanging on to old things. Some people call this sort of behavior “hoarding”, but around here we understand his affliction. It turns out that in his collection of old computer peripherals, he located a Thrustmaster Formula 1 racing wheel he used back in the day. Analog racing wheels can cost a pretty penny nowadays, depending on what you buy, so he decided to see if … [Read more...]