HiRel/CanSat

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(Vertical Boards)
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# [[HiRel/CanSat/Master_FPGA|an FPGA]]
 
# [[HiRel/CanSat/Master_FPGA|an FPGA]]
 
# [[HiRel/CanSat/Slave_Gumstix|a microprocessor]]
 
# [[HiRel/CanSat/Slave_Gumstix|a microprocessor]]
# [[HiRel/CanSat/Slave_XBEE|an XBEE module]]
+
# [[HiRel/CanSat/Slave_XBee|an XBEE module]]
 
# [[HiRel/CanSat/Slave_Sensors|sensors]]
 
# [[HiRel/CanSat/Slave_Sensors|sensors]]
 
# [[HiRel/CanSat/Slave_Power|power converters]]
 
# [[HiRel/CanSat/Slave_Power|power converters]]

Revision as of 15:44, 23 December 2014

Contents

The CanSat is a micro-satellite used for student competitions to educate the whole development chain from design until launch of space equipment.

The CanSat has the form of a soda can with a diameter of 66 mm and a height of 115 mm. The weight is limited to 350 g.

Demonstrator

This is a demonstrator of the CanSat for use in the HES-SO MSE HiRel module.

Layout

The first big question to solve is, how to get as much PCB real-estate out of such a limited and unusual satellite form-factor. We decided to go for a vertical solution with 5 PCBs. Furthermore we like to have all PCBs of the same size. This means that the they will be aligned along the central axis in the form of a star or a pentagon. To find the optimal solution we simulated all the possibilities in between these two geometrical figures.

Pcb 5 angles.svg

The biggest PCB board surface is attained at an offset of 18° from the pentagon.

TBD: insert image with curve

These boards will be hold in place and connected together with two round boards, one on top and one on the bottom.

TBD: insert 3D image/photo

Standard 2x6 pin connectors compatible to the Pmod™ serve as electronic as well as mechanical connection.

Vertical Boards

We decided to fill the boards with the following basic components:

  1. an FPGA
  2. a microprocessor
  3. an XBEE module
  4. sensors
  5. power converters

The FPGA board is a little bit special, as it serves as master and therefore connects to all other boards. Each of the other slave boards only connects to the FPGA board. Therefore the FPGA board holds 2 2x6pin connectors on each side whereas the other boards only need one.

Interconnect Boards

Both interconnect boards share the same layout, but with the connectors mounted on the inverse side. Each one of the four 6 pin connectors on the master board connect to exactly one slave board.

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