What can you do with needles, disposable syringes, superglue, cotton swabs, and scissors? If you answered ‘get hassled by TSA agents’, you’d be right, but you could also do what [Mski] did and make a pocket dart gun!
[Mski] used a 10mL syringe and a clear BiC pen body. He glued the pen barrel to the needle adapter on the syringe to make the chamber. He made the darts by cutting cotton swabs in half and inserting glue-covered needles. If you’ve never cut a cotton swab in half, they are hollow inside. What he has there are actually straight pins, which are cheaper than needles and come in larger quantities. The good news is you can make a bandolier of darts without breaking the bank.
Load your gun by shoving spitballs and/or darts up the chamber with a thin wooden stick, like a bamboo skewer. If you use your wife’s knitting needle, we recommend putting it back where you found it.
Do you prefer flaming projectiles and find clothespins easier to come by? Are you a hemophiliac or needle-phobic? Make this mini matchstick gun instead.
[Dan] took a $13 electronic dartboard and made it work with an Android device. The idea behind it is that these cheap electronic models feature a very sparse display. At this price that doesn’t surprise us. He wanted to add the features you’d find on a coin-op model like the ones found in bars. So he added some hardware that lets him use Android as the scoreboard.
To do this all he needs is the ability to detect when a dart has hit the board and what value was registered. The board is really nothing more than a 62-button input device organized as an 8×8 matrix. He soldered jumpers between the pins and a DIP socket. After the work was done he programmed his Cordium BASIC microcontroller, a 28-pin chip, and dropped it right in. It communicates with a serial Bluetooth module which provides the connectivity with an Android phone. You can see a very quick clip of the app embedded after the break.
This would be just perfect if you’re using an Android set-top-box on a TV near the dart board.
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