With some friends, we had the idea to use a real slingshot to play Angry Birds instead of using a standard mouse! The objective is to plug the slingshot into a computer over USB and to kill pigs with it!
The problem is that we had to find a microcontroller or a little board with a USB controller and a USB library already developed. Quite recently, Mbed has published a USB device library which is able to emulate a bunch of peripherals.
Combining the two previous ideas, we decided to design a real slingshot using an Mbed connected to a computer over USB to play Angry Birds!
Take a look at the video!
With a real slingshot, you tilt the slingshot and stretch sling. The idea to measure these was using:
- An accelerometer - this can measure the tilt by tracking the gravity vector (which way is down!)
- A rubber stretch sensor - this can be used as the sling, and measure how much it is stretched
The slingshot was crafted by Chris Jarratt, from a branch found in Epping Forest, London! This is the structure in to which I embedded all the electronics.