Trying to install DS18b20 temperature sensor but it looks like the RPi cannot find it.

From console:

sudo modprobe w1-gpio
sudo modprobe w1-therm
cd /sys/bus/w1/devices/

But there is nothing there :(

Have I done the wiring correct


Nr 3 did the work. Thx for quick help. sudo nano /boot/config.txt dtoverlay=w1-gpio,gpiopin=4

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