Thanx a lot!I managed to zero adjust my indication,but i have a problem with the op amp,as i've never used one before!
I know i have to connect 2 resistors with a ratio of 0.4 to the - input of the opamp and between the - and the out of the op amp.But i don't know how to manage my voltage.
-First of all,does a simple 741 op amp that i have,needs to be supplied?And if so,with what voltage?
-Second.I have the 2 leads,the hall sensor output and the wiper af a pot.where exactly of the 8 legs of the op amp do i connect them to?Do all 8 have to be used?
Sorry if my questions are stupid,i've never used an opamp before....