KD7LMO - Payload Computer


Payloads Payload Comp Overview Block Diagram Processor GPS TNC Local I/O Repeater Diplexer Commands Source Code Mechanical Telemetry Data Logger Micro Beacon Cut Down HF-APRS Video Link Pico Beacon NSRV Beacon APRS Beacon

GPS

The heart of tracking and recovery is the GPS (Global Positioning System) receiver. The GPS receiver provides latitude, longitude, course, speed, and altitude information to the computer. Because of the receiver's small size and surface mount connector requirements, the module was mounted on a PC board.

Motorola Oncore M12+ receiver. 12 channel receiver optimized for fast lock after signal loss.

Active antenna is mounted on top of the aircraft.

Low power, 3.0V design. Power converter and 3-5 volt logic translator included on daughter card.

Motherboard/GPS module weight 1.8 ounces. Antenna/feed line 0.5 ounces. Total GPS weight 2.3 ounces.

Smaller, all surface mount design over GPS receiver board used in Payload Computer.

GPS receiver assembly - front/rear view.

Schematic / PCB Layout

For best quality, print the schematic on a single 8½ x 11" sheet of paper in landscape mode using your favorite graphics application.


Schematic (Graphic - GIF)	PCB Layout (Adobe PDF)

Additional information on viewing the PCB artwork, PCB tools, and component libraries is available in the Technology section.

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