owlsat-hardware

Hardware repo - based on OakwoodEngineering's Obi Wan Komputer

Tools needed

KiCAD - FOSS EDA software from https://www.kicad.org/download/

LTSPICE - Circuit simulator for Windows and MacOS, works well under Wine with Linux (https://www.analog.com/en/resources/design-tools-and-calculators/ltspice-simulator.html)

(or alternatively use Falstad (https://www.falstad.com/circuit/) as it's a simpler interface and just as good for simple circuits that don't require specialized ICs)

git - FOSS version control software. Use Git Bash for Windows and optionally GitHub Desktop or another GUI for easier management.

To-do (this is somewhat still a jumble of useful ideas)

• Copy OWK repo hardware
• figure out what parts to keep and what to shave off
• consolidate everything we need into one board
• use ADM1176 properly or remove (per mlyle's suggestion)
• make transimpedance amp EUV measurement subsystem
• add magnetorquer subsystem (max22200 full bridge driver)
• improve solar charging subsystem if needed (test existing boards first!)
• make MRAM work with RP2350 (important, but requires bootloader and possibly sdk modification (and I don't yet know how to do this))
• change connectors to be less expensive but still reliable (however we will likely still have to use something expensive for the important connectors like battery)
• reorganize power domains
• re-layout board
• ensure we can build circuitpython firmware for our specific board