From 8b1dac9669dfc49ac3f5aac218922b94139490a2 Mon Sep 17 00:00:00 2001
From: Gabriel Kaszewski <gabrielkaszewski@gmail.com>
Date: Fri, 19 Jun 2026 12:37:30 +0200
Subject: [PATCH] update README: wiring table, new features, data-generators in
 arch diagram

---
 README.md | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/README.md b/README.md
index 27848a8..e97032f 100644
--- a/README.md
+++ b/README.md
@@ -89,6 +89,23 @@ cd spa && bun install && bun run dev
 # 5. Add a data source, create widgets, build a layout
 ```
 
+### ESP32 wiring
+
+2.4" ILI9341 SPI LCD module → ESP-WROOM-32:
+
+| LCD Pin | ESP32 GPIO | Function |
+|---------|------------|----------|
+| VCC     | 3V3        | Power    |
+| GND     | GND        | Ground   |
+| DIN     | GPIO23     | SPI MOSI |
+| CLK     | GPIO18     | SPI SCLK |
+| CS      | GPIO26     | Chip select |
+| DC      | GPIO21     | Data/command |
+| RST     | GPIO22     | Reset    |
+| BL      | 3V3        | Backlight (always on) |
+
+Uses SPI2 (HSPI) at 26 MHz. Pin assignments are in `crates/client-esp32/src/main.rs`.
+
 ### ESP32 client
 
 ```bash