Deddie Lab has two interesting Secret Dice projects. The first one is wooden and the second one is metallic. These dices will open only if the secret code is entered. To enter the code you must tilt the box in the correct ways. When the correct code is entered a servo motor will unlock the box so you can get your reward. [via]
Hide Goodies in a Secret Box – Atmega88 Based – [Link]
Jeremie Boulianne of Calgary came with a unique way to build a linear actuator: [via]
Linear actuation is an elusive and expensive field to get into but I always seem to find a need for it with robots I build. Whether it being to raise a turret or dispense a marker a linear actuator would be so handy.
My proof-of-concept solution (hack) was to create a linear actuator design that is accessible to even electronics enthusiasts on the tightest budget
Deodorant-stick linear actuator – [Link]
This article shows how to convert a servo into and geared motor.
But, you still want the RPMs of a servo without the hassle of the pulsing control. So, you hack the servo and make it a geared motor. Easy! Here’s how…
Turn a Servo Into an Inexpensive Geared Motor – [Link]
This project is a mounting system that adds mechanical tilt control to the iPhone. The unit uses two servo motors to move the iphone on the X and Y axis. The system is controlled by an analog joystick and an Arduino board. It can be used to play accelerometer-based games on the iphone. [via]
iPhone tilt motion controller - [Link]
This is a robotic arm paired with a stepper motor to move it back and forth. It grabs up a sharpie pen and receives automated commands to dot out pictures.
The Sharpie Dotifier uses 5 servo actuators to move the arm up, down and to grip objects. The robotic arm is on a wooden stage which is moved back and forth via a threaded rod. The stepper motor turns the threaded rod so that the stage moves back and forth. Because the motor moves in precise steps we can reliably track the movement back and forth and always know where the stage is.
The Sharpie Dotifier - [Link]
This project is a PCB etching solution rocker that uses a servo motor to agitate the etching solution. The base is build from wood and the servo is controlled by a PIC 18F2620.
PCB Etching Solution Rocker – [Link]
This project is a meter clock that is styled like a VU meter. The two meters are attached to servo motors and are controlled by a PIC 18F2550. The box is build by y first making a form, then laminating thin sheets of wood. Complete project documentation can be found on the link below. [via]
Meter clock in wooden box – [Link]