Here's a reference to the relay module.
Each relay is controlled by an opto-isolator input which is active low.

Below is a suggested circuit to operate two of the SPDT relays in a bridge configuration to control the motor.

A CD4013 flip-flop (2 in each package) provides the latch function.

R1C1 provides the mechanical switch debounce function by providing a short delay before the FF can be again triggered to change state.

R4C2 generates a power-on CLR signal so that both relays are unenergized and the motor is in the off state.

The pushbutton voltage is supplied from the opposite flip-flip /Q output to provide an interlock so only the appropriate pushbutton is active when the motor is ON.

The output of each MOSFET is connected to the respective relay control input on the board.

Each pushbutton turns the motor ON in one direction with a second push turning it off.
That way the motor doesn't instantly have to reverse direction, which can damage the motor.
So to change direction, you push one pushbutton (the one used to energize it) to turn the motor OFF, and then push the other push-button to start it in the reverse direction.

The diodes are to protect the relay contacts from any inductive transients from the motor.
The diode size depends upon the motor running current.

 

You can do it with a switch


You can do it with a relay or relays


Most motors you really want to go from Forward to Reverse instantly, motors hate that. The relay image does not show the relay coils, only the contacts. COM is Common, N/O is Normally Open and N/c is Normally Closed. I have no idea what your motor current is? Be it switch or relay contacts they need to handle full load motor current. You can also use a switch to energize the relays. That is simple. Once you get into latching circuits things get a little more complicated. There are also other ways to reverse DC Motor polarity.

Ron

 

If using a DPDT switch with centre OFF will eliminates the instant reverse issue.
Max.

 

Mod: Created your own Thread, Link to old.

https://forum.allaboutcircuits.com/...witches-to-control-polarity.96662/post-719523

Can we not just use the switches without the relay...?

Hi Sourav,

Here's one, without relays, using 2 push button switches with NO and NC contacts.



Nandu.

 

Hi Sourav,

Here's one, without relays, using 2 push button switches with NO and NC contacts.

View attachment 202043

Regards,

Nandu.

That will not work as shown.
There is a short across the power.

It will work if you connect the motor where you show the power, and the power where you have the motor.

 

That will not work as shown.
There is a short across the power.

It will work if you connect the motor where you show the power, and the power where you have the motor.

Hi dendad,

Oops! So sorry for the slip.

I have rectified it.

Many thanks.

Nandu.

 

For non latching, NO PB SWs to ground & IN 1 & IN 2. Motor K1, K2 common, +12V to both NO & ground to both NC.

 

A drawing to backup post # 27.

 

Are the switches momentary or continuous?