Ashley Callaway Pat Doherty Nikeshia Ebron Leo Romanovsky ECE Grande Theory of Operation Hardware Design Ashley Callaway Pat Doherty Nikeshia Ebron Leo Romanovsky

Overview Theory of Operation Hardware Components Block Diagram Schematic

Theory of Operation - 1 Microcontrollers RFID Reader LCD Screens Operating frequency is 16MHz Satisfies computational requirements Conserves more power than 32MHz clock RFID Reader Operating voltage is 5V TTL serial interface (2400 baud) Level shifter Requires 3.3V and 5V LCD Screens Operating voltage is 3.3V 90 mA current draw - Don’t forget to mention that the 90mA current draw is for EACH LCD screen

Theory of Operation - 2 User input buttons Ethernet port Power supply Generic pushbutton switches Ethernet port Magnets for analog signal are present within jack itself Power supply 9V wall wart 3.3V linear regulator 5.5V linear regulator 0.5 to 1 Amp - For the power supply, we might want more than 1 Amp of current coming out of the power supply

Hardware – Master Microcontroller FreeScale 9S12NE64 General Purpose I/O 1 – RFID Reader 4 – Slave Selects SCI Exclusively devoted to RFID SPI Master to Slave microcontroller communication TIM (tentative) May aid in controlling the flow of game - WILL want to use the TIM module…so we can keep track of games, statistics, time stamps, count down until start of game, etc….

Hardware – Slave Microcontrollers FreeScale 9S12GC32 One slave micro per player station 17 pins/micro General Purpose I/O 14 pins – Parallel LCD communication 3 pins – User input buttons SPI Master-Slave microcontroller communication Option 1: Using an individual crystal for each slave micro will change the power Option 2: using a buffer from the main crystal to the slave micros

PARTS CHANGE - LCD 128 x 64 Graphic OLED Module Parallel 8-bit interface 3.3V power supply and logic

Block Diagram DIAGRAM BLOCK

Schematic Coming Soon … 