Space Invaders Characters Displayed on Animated Button

The project is a button-sized Space Invaders device that can display animated characters and can be worn just like a real button.

The ATmega164P is the basis of this Space Invaders while all the 24 pins of the matrix are driven by enough amounts of input pins. The column diodes are controlled by the ATmega through the sinking of current. Along with the MCU is the smaller type transistor SOT323 which can be easily soldered onto the PCB board. The perfect package for small signal transistors is the SOT323 transistor package which is smaller than SOT23 or TO92. The design of the device contains a fixing pin at the battery holder attached at the end for the capability of wearing the device. The current limiting resistors are in the form of arrays along with the decoupling SMT capacitors.

All the settings of the pin are contained in a buffer instead of using a bit buffer since the implementation of the code is based mostly on the 64 pixel project. This signifies 4 bytes for PORTA to PORTD. The bits are being converted into the various port configurations during the load time.

Rest of the project