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docs: Update unreleased changes in changelog and README

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- Fixed USB hub controller (U401/CH334): XO pin connected to GND for crystal-less operation
- Fixed DC/DC converter (U202/XR76208): Enable circuit changed to Zener diode for 12V operation
- Fixed USB outputs: Replaced fuses with TPS2557 power distribution switches for backfeed protection
This commit is contained in:
Eduard Iten
2025-12-23 07:27:59 +01:00
parent 68937e160f
commit b883bc6c7d
17 changed files with 10132 additions and 8119 deletions
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EWS.kicad_sch
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@@ -3,7 +3,7 @@
(generator "eeschema")
(generator_version "9.0")
(uuid "4ae99543-64c8-472f-befd-04c32f138656")
(paper "A4")
(paper "A3")
(title_block
(title "EWS - Power, CANbus and USB HAT for 3D Printers")
(date "2025-12-04")