ESP32 Web Server + Local Control UI

This project runs an ESP32 as a WiFi access point with a simple web server to toggle LEDs, and a local Node.js UI that proxies button clicks to the ESP32 endpoints.

Local Setup (WiFi + Node)

1) Flash the ESP32 and start the AP

# From the project root
pio run -t upload

Optional: open the serial monitor to confirm the AP and IP.

pio device monitor

Now connect your computer/phone to the ESP32 access point:

• SSID: ESP32_Server
• Password: 12345678

The ESP32 AP IP is http://192.168.4.1 and exposes:

• http://192.168.4.1/on
• http://192.168.4.1/off

2) Run the local Node.js server

cd server
pnpm install
pnpm start

Open the UI at http://localhost:3000 and use the buttons to toggle the LEDs.

If it doesn’t work

Check these first:

• The ESP32 AP is visible and your device is connected to ESP32_Server.
• The ESP32 IP matches http://192.168.4.1 (see serial output).
• Port 3000 isn’t already in use.