This video provides a clear guide in building your own stun gun. Its very simple too. Unlike commercial stun guns, the shock does not carry nearly as much venom.

And unlike some of the video guides this site has blogged about, this particular guide – making a home-made stun gun – is slightly different in that it is, in effect, a weapon, therefore, anyone making this should do so responsibly. Do not use it on yourself or others as it will give off quite an uncomfortable sting! (more…)

Ever wanted to get a powerful telescope that is also able to record what you see on your computer. Well, this little video shows how to make a spy telescope using a webcam and telelens. This seems a very achievable way to build a powerful telescope on a small budget. (more…)

Wouldn’t it be really cool to have a spy camera that could be used to record a video of exactly what you see? Wouldn’t it be even better to have it completely concealed so that nobody knew that you were spying on them? Sounds something you would see in the TV Series Bugs (actually Season 3, Episode 8: Buried Treasure to be precise!). This great article on Instructables shows you how you can make your own covert spy camera sunglasses made from low cost chunky sunglasses and a cheap spy camera from eBay. (more…)

The UberTracker is a combination of GSM and GPS technologies just like the Parallel Track GPS tracker that I reviewed recently. However, the UberTracker is a completely customisable device that can report GPS coordinates via email or over GPRS to a web server. You can configuring the logging frequency, how much log data is sent to an email address or web server and the type of location format too. (more…)

This tiny microphone the size of a matchstick is only 3mm in diameter, and is an excellent accessory for audio surveillance equipment. The microphone uses a standard-sized 3.5mm socket with a clip to allow you to connect it to your audio equipment. The audio socket does need to provide a power supply, but that’s very common for sound recorders these days. (more…)

Location trackers are getting frighteningly common now, and even I’m getting overwhelmed with how many different variations there are. The most useful type of tracker is one that allows you to remotely find out the location of the GPS device. For example, if you have a car with a GPS tracker fitted into it, and the car is stolen, you can find out where its located by sending it a text message. The pricing for such a bit of kit can vary, but often starts at the £200 ($400) mark for the entry-level kit.

If you fancied making your own remote GPS tracker for around £150, have a read of this Interfacing an AVR controller to a GPS Mobile Phone article on Tickerlog. (more…)

If you’re a fan of making your own spy kit, then here’s another kit for you. The MK120 Infra-red (IR) breakbeam detector kit allows you to construct a gadget that sounds an alarm when the IR beam is broken by someone walking between the transmitter and the receiver unit. (more…)

The Everyday Practical Electronics (EPE) Magazine is the number one hobby electronics and computer projects magazine in the UK. Their focus is on practical circuits and projects, and the magazine features a number of smaller useful circuits in addition to those featured on the front cover. (more…)