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Background
Target use for https://uwarg-docs.atlassian.net/wiki/spaces/ARCHS22/pages/2556133415/Fixed+Wing+2025?search_id=c463239c-2144-46d3-afe5-07fb485223d7
Buck converter can be designed smaller than 12S Servo Module because of lower input voltage.
What
Same current limiting circuits as 12S Servo Module
4 Channel
Leverage the validation we’re already doing on this PCBA as much as possible
Common CAN circuit from ESC CAN Adapter
Buck Converter for 6S to 5V
Could be copied from Tracking Antenna Nucleo Shield Arch using AOZ2261NQI-12 though maybe higher switching frequency. Test this chip on the previous board if possible, cc Jerry Tian.
Keep 30.5x30.5mm mounting pattern fromhttps://uwarg-docs.atlassian.net/wiki/spaces/EL/pages/2189197330/Mounting+Hole+Specifications?search_id=5eb88afa-dccc-4fc7-8c97-c8cc5472042fusing 61x30.5mm mounting pattern for ease of routing and to keep all components on one side
Current Sense
just on the input current would be nice, get some metrics as to how much current the servos require during maneuvers and we already have a CAN line so why not!
Target all components on a single side of the PCBA for easier assembly & mounting
Why
12S Servo Module has some room for optimization for this airframe
no CAN support
buck converter could be made smaller and lighter since lower max input voltage
Who
Meghan Dang to take this up July 2024 as lead engineer
Daniel Puratich guidance and review for architecture & design
Link
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System Block Diagram
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Power Block Diagram
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