Changes

=== Board Specification ===

=== Board Specification ===

All boards implementing the HONEY spec must meet strict physical requirements. There is a standardized set of measurements, mounting holes, connector placements, and board dimensions that must be met for proper integration with the flight stack.

All boards implementing the HONEY spec must meet strict physical requirements. There is a standardized set of measurements, mounting holes, connector placements, and board dimensions that must be met for proper integration with the flight stack.

The dimensions of a HONEY-compliant board are exactly 10x10 cm. Boards are 0.062" in thickness (this is important for the physical fastening of the flight stack to the payload container, which is sensitive to the thicknesses of boards in the flight stack. Boards also have four through-holes at each corner, designated for standoffs. The holes are designed for M3 standoffs, which are indented 250 mil from both edges of the respective corner. The board also necessarily consists of a PC/104+ connector for the flight stack data bus, a 10-pin (5x2) connector for the flight stack power bus, a 6-pin (3x2) connector for the flight stack CAN bus, and an 8 pin (4x2) connector (NON stack through) for holding jumpers for implementing CAN terminating impedances. These connectors are not physically located on the board in a whole-number fashion, but must be implemented with exact precision to allow for proper stack-through ability. The PC/104+ connector also comes with a paired shroud that clips onto the board via four through-holes, which, while not strictly required for operation, is highly encouraged and is part of the stack-up Altium part. Boards are expected to not exceed their boundaries by more than 0.25". The flight stack has 0.5" of space around it, between its outer dimensions and the walls of the payload container.

The dimensions of a HONEY-compliant board are exactly 10x10 cm. Boards are 0.062" in thickness (this is important for the physical fastening of the flight stack to the payload container, which is sensitive to the thicknesses of boards in the flight stack. Boards also have four through-holes at each corner, designated for standoffs. The holes are designed for M3 standoffs, which are indented 250 mil from both edges of the respective corner. The board also necessarily consists of a PC/104+ connector for the flight stack data bus, a 10-pin (5x2) connector for the flight stack power bus, a 6-pin (3x2) connector for the flight stack CAN bus, and an 8 pin (4x2) connector (NON stack through) for holding jumpers for implementing CAN terminating impedances. These connectors are not physically located on the board in a whole-number fashion, but must be implemented with exact precision to allow for proper stack-through ability. The PC/104+ connector also comes with a paired shroud that clips onto the board via four through-holes, which, while not strictly required for operation, is highly encouraged and is part of the stack-up Altium part. Boards are expected to not exceed their boundaries by more than 0.25". The flight stack has 0.5" of space around it, between its outer dimensions and the walls of the payload container.