![]() ![]() ![]() With a simple pull of the joystick’s trigger, the turret opens fire. A joystick is fitted with an NRF24L01 radio module to send signals to the Arduino to aim the turret, while an FPV camera mounted on the turret allows the user to remotely see what the turret is aiming at. There’s a hopper-style clip which uses a servo to drop one ball at a time into the launching tube.Īn Arduino Uno is responsible for slewing the turret, and handling the firing process. A blower fan is used to gently roll ammunition towards the launcher wheels as required. It’s a remarkably simple way of electrically launching projectiles without a lot of fuss and mucking around, and it works well here. The system works on the basic principle of launching soft foam balls via a pair of counter-rotating wheels. has done just that, with his FPV Nerf Ball launcher. These days, there’s nothing stopping you from building your own. Sentry turrets have long been a feature of science fiction films and video games. Video after the break.Ĭontinue reading “Robot Nerf Alarm Blasts You Awake With Foam” → Posted in Misc Hacks Tagged nerf, sentry gun We’ve seen all kinds of sentry guns over the years, from those firing rubber bands to others spraying jets of water. It’s a hard sentry to dodge, with the machine vision algorithm using a full-body tracking model, so merely covering one’s face won’t be enough to get away. had plenty of fun during build, also showing the sentry gun off to his coworkers in the office. A relay board is then used to activate the blaster’s firing action, blasting any targets until they wake up. It’s moved under instruction from a Raspberry Pi that uses machine vision algorithms running on a Coral USB accelerator to track targets in the bedroom. Stepper motors are used to control a pan and tilt system to aim the blaster. When started unconsciously switching his alarms off, he went all out, deciding to build a Nerf sentry blaster to wake him up instead.Ī Nerf Rival Nemesis MXVII-10K flywheel blaster is the core of the build, with a 100-round capacity of soft foam balls. Waking up is hard sometimes you need more than a little chiming alarm to get you out of bed. The sentry gun targets with blasts of foam as he runs through the bedroom to the sounds of Your New Morning Alarm by. ![]()
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