Part 4. Hardware Setup

The DS18B20 has three wires. The red wire connects to 3.3V. The blue/black wire connects to ground. The yellow wire connects to a pull-up resistor/pin 4.

If you have a DS18B20 that has red/black/blue wires, red to 3.3V, black to ground, and blue to pull-up resistor/pin 4.

Make sure your Pi is powered off before putting together your circuit.

<< Part 4: IoT Temperature Sensor - Part 4: Making Sure the DS18B20 Works >>