Problem is that I have Tiny85, on my breadboard and I'm programming it using USBAsp, and I don't know can I establish serial communication between computer and arduino.
But when I connect this hall sensor to 1 pin to 5V, 2 pin to GND, and 3 pin to one probe of my multimeter, and other probe I connect to GND. On my meter it shows about 3 V, and when I put the magnet it shows about 1mV.