Filawinder servo mod idea (Page 2 of 2)

I have 2 5v relays.
Same problem.
They dont toggle. They switch back as soon as you let go the switch.
Also motor is not powered at all using your diagram. I had to rewire it.
1,6 needed ground and 3,4 12V. 2,5 motor the same.

Now for some reasons arduino nano is dead. It wont reset, it wont flash, it wont work.
Had to order new board.

My question now is: once i get new board, do i just flash it with firmware or i need bootloader 1st ?
I need some step by step for bootloader please.

Got it. 12v relay module takes 0.38A. Gotta take it straight from the power jack but that will start getting hot because on top of 0.4A i get 0.1A from board and then there are 2 motors which will quickly create problems.

You siad: "use the original single module It uses a latching relay" thats not true in my case. It seems to work exactly the same way as the 2 channel relay.
For that reason i ordered a relay that toggles position by momentary switch instead of triggering position by momentary switch.
I need self locking relay. That kind of relay cost 2-3 times the normal. About $7 piece vs $3 (talking about US ebay prices)
Those relays have ECU on board that allows that behavior. Anything else is a no go.

Made another discovery.
I can activate the motor exactly when spool is rotated and control how long motor is activated. This limits the movement of the guide system based on delay time set.

Locate:    
guide_angle = (guide_angle + 1.17); }     //Move the guide +1.17 degree for 1.75mm filament
Change it to:
guide_angle = (guide_angle + 1.17);
    digitalWrite(A4, HIGH);   //Activate Guide Motor because spool has rotated
    delay (2000);             //Adjust delay to make motor move less or more per spool rotation
    digitalWrite(A4, LOW);    //Stop Guide Motor
    }     //Move the guide +1.17 degree for 1.75mm filament

I now want to simplify the design somewhat. 4 relays to deal with is little too much but its working like a charm especially after making it trigger at the servo part of the code.
Here is what it looks like.