Design Review

Tuesday, May 7

Went over design proposal and slides with Ed and Jeff
General mechanical design and communications layout approved
Communications layout:
- POD side: Two PICs (One serving as the Brain in order to increase output pins, one communicating with the XBee to relay data between Brain and XBee); Two PICs communicate through SPI
- ROAMER: Two PICs (One relaying data between XBee and E128 via EUSART, one relaying data between SPECIAL and E128 via SPI) and one E128. E128 communicates with XBee PIC via EUSART and with SPECIAL PIC via SPI

***Update 5/11: It was decided that the ROAMER XBee will be accessed directly from the E128 using EUSART, as the relay PIC can be eliminated with no issues, and the SPECIAL PIC can use Slave Select to communicate via SPI with both the E128 and the SPECIAL.