Two hobby servos take care of the pitch and roll axes, controlled by an Arduino talking to an MPU-6050. A few scraps of aluminum bar stock were bent into the gimbal frames and camera mount. So rather than shell out a lot of money for a commercial gimbal, decided to build one for his friend. When joined his school photography club, a fellow member who happens to have cerebral palsy needed help steadying cameras for clean shots. Such was the case with this low-cost two-axis handheld camera gimbal intended to help a budding photographer with a motion disorder. So it’s nice to see hacking skills going to good use and helping someone out. We so often hack for hacking’s sake, undertaking projects as a solitary pursuit simply for the challenge. His video is definitely worth checking out below.Ĭontinue reading “Building A Self-Balancing Robot Made Easy” → Posted in Robots Hacks, Slider Tagged 2 wheel robot, arduino pro mini, Arduino Uno, balancing robot, MPU-6050, wii nunchuck And he does all this clearly, and at a pace that’s neither too fast, nor too slow. He also shows how to set the drive current for the stepper controllers. His software includes a program for getting a calibration value for the IMU. He chose steppers over cheaper DC motors because this delivers precision and avoids issues when the battery voltage drops. It sounds simple, but when starting from scratch there’s a lot of choices to be made and a lot of traps to fall into. video explains the basic principles and covers the reasons he’s done things the way he has - all the advice you’d be looking for when building one of your own. They stand on two-wheels, using a PID control loop to actuate the two motors using data from some type of Inertial Measurement Unit (IMU). Self-balancers are a milestone in your robot building life. Not only has built an easy to make balancing robot but he’s produced an excellent set of plans and software for anyone else who wants to make one too. ’s course is always a bonanza of neat projects that pop up in our tipline this time of year, like a POV box fan, a coin cell Rickrolling throwie, and a dynamometer for small electric motors.Ĭontinue reading “Balance Like A Mountain Goat On This Simple Stewart Platform” → Posted in Microcontrollers Tagged accelerometer, goat, Gough-Stewart platform, microcontroller, MPU-6050, pic32, stepper Said goat appears to serve no other role in the build, but goats are cool, so why not? And if you’ve ever seen a mountain goat frolicking across a sheer vertical rock face like it was walking across a parking lot, you’ll understand the connection to the balance and control offered by a Stewart platform. Their PIC32-controlled steppers can wobble and weave the table in response to inputs from an MPU-6050 six-axis accelerometer embedded in the base of a 3D-printed goat. built a small version of the mechanical system commonly seen in flight simulators, opting for 3 DOF to simplify the design. If the name “Stewart platform” doesn’t ring a bell, the video below will help you out. No goats were harmed in the making of this 3-DOF Stewart platform for ’s microcontrollers course at Cornell. The video (embedded below) focuses mainly on the development process, but does have the gameplay elements explained as well and demonstrates some slick animations and sharp feedback.Ĭontinue reading “DIY Dungeon Crawler Game Plays On Single LED Strip” → Posted in Arduino Hacks, how-to, LED Hacks Tagged 1 dimensional, 3d printed, accelerometer, arduino, doorstop, dungeon crawler, game, MPU-6050, TWANG By playing with brightness and color, a surprising amount of gameplay can be jammed into a one-dimensional display!Ĭode for TWANG! is on github and models for 3D printing the physical pieces are on Thingiverse. The joystick is moved left or right to advance the player’s blue dot left or right, and the player can attack with a “twang” motion of the joystick, which eliminates nearby enemies. Making this more difficult are enemies (red dots) which move in different ways. How can a dungeon crawler game be represented in 1D, and how is this unusual game played? The goal is for the player (a green dot) to reach the goal (a blue dot) to advance to the next level. As a result, the game world, the player, goal, and enemies are all represented on a single line of LEDs. The game itself is played out on an RGB LED strip. A delightful version of a clever one-dimensional game has been made by which he calls TWANG! because the joystick is made from a spring doorstop with an accelerometer in the tip.
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