ESP32 Weather Station with DS18B20 & Web UI

#Introduction

Measure outdoor temperature with a waterproof DS18B20 and view it anywhere in your house.

#Wiring

• DS18B20 red → 3V3, black → GND, yellow → GPIO 5 (4.7k pull-up between yellow and 3V3)

#Steps

1. Install OneWire + DallasTemperature.
2. Flash, open serial for IP, browse to it.

#Troubleshooting

• −127 °C reading → missing pull-up resistor or reversed probe wires.