From c67a90ba091174ef136ecd094a9d3825541b5558 Mon Sep 17 00:00:00 2001 From: MangaValk Date: Tue, 13 Oct 2026 00:12:35 +0200 Subject: [PATCH] Document optional Nano TX to ESP RX wire Co-Authored-By: Claude Opus 5.5 --- src/nano/README.md | 1 + 1 file changed, 1 insertion(+) diff --git a/src/nano/README.md b/src/nano/README.md index 4f6f0cd..9cf7643 100644 --- a/src/nano/README.md +++ b/src/nano/README.md @@ -78,3 +78,4 @@ pinout. | ROW_RESET | D13 | | ROW_SET | A5 | | Serial RX | D0 (from ESP32 TX) | +| Serial TX | D1 (to ESP32 RX, through a 5 V → 3.3 V voltage divider). Optional: needed for `READY`. Without it, the ESP waits the full 3 s timeout. |