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Oresat 0.5 Backplane

oresat·oresat-backplane·2U/oresat0.5/oresat-backplane-2u.kicad_pcb

Oresat 0.5 Backplane PCB layout, top view — open source board by oresat
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About the Oresat 0.5 Backplane PCB

Oresat 0.5 Backplane is an open source PCB design by oresat, published on GitHub. It is a 4-layer board measuring 82.5 × 213.5 mm, with 59 components from 10 distinct parts.

By type, the board carries 21 capacitors, 10 resistors and 1 connector.

It belongs with the power & battery designs in this gallery.

From the project

Artisanally hand-crafted bespoke backplane for OreSat.

The OreSat CubeSat bus uses a card cage / backplane system based on a 1 Mbps Controller Area Network (CAN) bus and a 2 cell Lithium ion battery power bus (6.0 - 8.4 V). There are ~ 8 cards per CubeSat "U", and the board is meant to be general purpose enough to allow for some card swapping. The RF lines, however, are microstrips on the backplane PCB so the backplane must be rev'd for changes in the RF cards. There are three sets of connectors:

Oresat 0.5 Backplane, from the project README
From the project README

Oresat 0.5 Backplane bill of materials (BOM)

59 components, 10 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
A115240
m55-6001642
J1
17
SFM-120-X1-XXX-D
CF1.2, CF2.2, CF3.2, CF4.2, CF5.2, CF6.2, CF7.2, CF8.2 +9
2
SFM-110-X1-XXX-D-LC
CF17.1, CF18.1
8
J-MOLEX-SMPM-73300-0111X
CM1.1, CM2.1, CM3.2, CM4.2, CM4.3, CM20.1, CM20.2, CM20.3
4
399-C0603C102F1GACAUTO
10u 25V
C1, C2, C3, C4
4
1n
C1.1, C1.2, C20.1, C20.2
4
490-14533-1
10u 25V
C5, C6, C7, C8
9
10u 25V
C12, C13, C14, C15, C16, C17, C18, C19 +1
8
60.4
R1.1, R1.2, R1.3, R1.4, R20.1, R20.2, R20.3, R20.4
2
0
R20.5, R20.6

Oresat 0.5 Backplane design files

The KiCad project lives in the oresat/oresat-backplane repository on GitHub; these links point at the commit this page was built from.

Oresat 0.5 Backplane: common questions

How big is the Oresat 0.5 Backplane PCB?

The Oresat 0.5 Backplane measures 82.5 × 213.5 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Oresat 0.5 Backplane?

59 components, from 10 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Oresat 0.5 Backplane design files?

From the oresat/oresat-backplane repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Oresat 0.5 Backplane design in my own project?

The repository has no license, so all rights stay with oresat. Use it as a reference, and ask the author before reusing the design.

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