1-Wire Bus Support
one-wire
gpio Support for devices using 1-Wire bus over GPIO
📅Last updated:January 5, 2026(27 days ago)
Official Documentation
📚 ESPHome Documentation →Overview
Software implementaton of 1-Wire bus.
- NOTE ⚠️: Has to use internal GPIO that supports input and output because it is a bi-directional bus. It cannot use external components for this - like expanders.
- Requires one 4.7K pull up resistor on the GPIO used for the bus. See DS18B20 for wire-up.