1 Commits

Author	SHA1	Message	Date
Leopoldo Rodríguez	0f82a667c4	EinarBoard 1.1 design brief: locked decisions (RS-485+RS-232 via SC16IS752, on-board W5500 Ethernet, RGB status LED, board growth) + execution phases ... Keystone: gauge moves to PCF8574 on I2C1 -> frees SPI2 for W5500; SC16IS752 dual-UART bridge on I2C gives RS-485 (Modbus RTU) + RS-232/TTL with zero MCU pins. New 3V3_ETH rail from SYS5V (survives stack power-cycles). Carry-over errata state + depop list + phases A-E. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01GSKKes8GsS4YHAMWJ44tCm	2026-07-29 01:58:39 +00:00