01Payload + OBC
Design documentation
Follow the payload and onboard computer architecture, their interfaces, and the decisions that connect them.
Earth observation / 3U CubeSat
Open hardware · engineering record
Small satellite.
Clear engineering.
Inside TerraCircuit’s 3U Earth-observation payload and onboard computer. Follow the design notes, calculation basis, PCB records, and build process.
Payload/OBC/PCB/Build
System overview
TerraCircuit / 001
Payload to onboard computer
The working standard
Show the basis. Explain the build.
Assumptions beside results
Units attached to values
Design intent made visible
Engineering index / 01—04
One mission, documented at every layer.
A clear route through the payload, OBC, calculations, boards, and the work required to build them.
02Assumptions / units / results
Engineering calculations
Calculation notes keep assumptions, symbols, input values, and units beside each result so the reasoning can be followed.
03Schematics + layouts
PCB design gallery
Browse board records from schematic capture through layout, with each view tied back to its design documentation.
04Fabrication / assembly
Build walkthroughs
Trace the documented handoff from fabrication files to board assembly, with preparation and inspection steps made clear.
Design discussion describes the work and its assumptions; it does not claim flight qualification.
Calculation format
Readable from input to result.
Engineering calculations carry their context with them: assumptions, symbols, units, and the method used to reach a result.
01
Assumptions
02
Inputs + units
03
Method
04
Result + basis
Board records / 03
From schematic to layout.
PCB galleries pair the circuit view with its board layout and fabrication context, so a drawing stays connected to the hardware it describes.
Gallery / 01
Circuit documentation
Schematics
Functional views and notes for the payload and OBC electronics.
Gallery / 02
Board documentation
PCB layouts
Placement, routing, and fabrication views with their design context.
Build sequence / 04
Make the handoff understandable.
Walkthroughs connect board preparation, fabrication, and assembly, documenting the files and checks involved at each stage.
01
Prepare
02
Fabricate
03
Assemble
04
Inspect
Access by request
Versioned design files, with context.
Request access to the design file set you need. Share the relevant board or document, and the team can provide the available revision and its supporting notes.