Vermes
Advanced Member level 4
The assumption was to create a game of small dimensions and low costs. The system was built of SMD components.
The main element of the system is Atmega32. It is powered from two batteries. Pulse converter was implemented on the MC34063 and it provides a voltage of 5V.
Monitor with VGA input acts as the display. The resolution of the displayed image is 640x480 at the frequency of refresh approximately 50Hz. Signals of line and frame synchronization are given directly form the processor's pins, while RGB components – from digital-analog converters consisted of 910ohm and 1k8 resistor for each channel. In total, the device requires 8 bits for the support of the display which is whole port C.
The cube can be controlled by a matrix keyboard connected to the port A.
Programming is made by ISP interface. All the connectors (keyboard, ISP, VGA, supply) are in the form of single row headers sockets.
The processor is clocked by a quartz 18.432MHz. Software was written in Assembler.
The system allows playing sound.
Scheme:
Board:
Link to original thread (useful attachment) – [konkurs Gra retro] Kostka rubika