overland-controller/docs/TEMP_SETUP.md

DS18B20 Temperature Sensor Setup

Wiring

All DS18B20 sensors share a single 1-Wire bus.

ESP32:

GPIO4 = DATA
3.3V  = VCC
GND   = GND

Required pullup:

4.7k resistor between DATA and 3.3V

Example:

3.3V -----+---------------- Sensor Red
          |
         4.7k
          |
GPIO4 ----+---------------- Sensor Yellow

GND ----------------------- Sensor Black

Multiple Sensors

All sensors share the same bus:

DATA
VCC
GND

Only one 4.7k pullup resistor is required.

Scan

scan temps

Example output:

DS18B20 Sensors Found:
1) 28:7D:56:25:00:00:00:34

Assign

assign temp 1 1
save