Tennis for Two Game Using Oscilloscope

The concept of this Tennis for Two is to allow the two players to toss the ball to each other continuously in an oscilloscope display.

The AVR ATmega168 microcontroller is the brain of this project where two handheld controllers are connected. A knob and button is included in each handheld controller. The output from the AVR is being taken by the digital to analog converter as is also used to drive the scope. These are the three parts that comprise the whole system.

The power and ground that is usually 3V-5V is provided to the AVR microcontroller as it requires to be connected at least once to a USBTINY programmer. Three AA with 4.5V output batteries are used to power the board. The so called R-2R scheme is being used by the DAC as it contains 8 bits of resolution. This scheme gives higher frequency performance which makes it an advantage compared to the other method of making a DAC on an AVR. It has 256 × 256 grid that is suitable for playing games on the scope screen although it is more tedious to build and contains only 256 resolvable levels.

Rest of the project