Connecting 3x DS18B20 to UNI

  • Hi

    I intend to connect 3x DS18B20 sensors to my UNI.

    Do I need to include a pullup (4.7k) resistor from the DATA to VCC line as I would with pi/ESP32 etc?

    For powering the UNI I have a 24V PSU, but don't understand..
    Do I only connect +ve to pin 1, and ground to pin 2?

    What about -ve from PSU?

    (sorry, electronics n00b!)

    A wiring video or photo would be very helpful.

    Thanks!