Hey guys.... I am looking for a very small "Reverse Voltage" Board/Button that I can use to reverse the Polarity Feed for a small RC Motor.
The output should be 3.3 Volts and I need to be able to reverse the polarity with the slide of a switch or the push of two separate buttons.

Thanks in advance for the help!

Joe

 

A DPDT switch, wired as below, will do that:

 

Thanks so much for the help Zapper!
Do they make tiny spring loaded "return to neutral" DPDT slide or toggle switches anywhere that you know of?
Joe

 

There are certainly some very small DPDT switches available and the connection scheme in post #2 is correct. AND now we learn that a center off is also required. certainly center off switches are also available, but spring return to center will probably not be available in the tiny size.

There is a different scheme that can easily be done with TWO SPDT push buttons. THAT will provide two directions and release to stop.

 

Thanks for the help MisterBill2... I am thinking that the slide switch in the attached picture in a 3-Position Slide Switch would be perfect!
Joe

 

While a slide switch can certainly provide what you are asking for, it is not nearly the smallest package. , although it would cost the least.

 

But I can't seem to be able to find one that is tiny and also has a neutral position i.e. 3-Position Slide Switch. Any leads would be greatly appreciated.

 

Would one of these work?

 

Hi Zapper and Yes. I just ordered them. Can you draw for me again what the wiring will be on this switch now has the Center "Off" Position.
Thanks again for all the help and greetings from New Orleans.
Joe

 

There are spring return types of DPDT switches. They are called "mom-off-mom", meaning momentary. You have to hold the position either direction and when you release pressure, the switch returns to the center off position.

https://www.digikey.ca/en/products/filter/toggle-switches/201?s=N4IgjCBcoGw1oDGUBmBDANgZwKYBoQB7KAbRACYAWAdmrGpAKtoGYAGRim6liJucjAb8YggBydBo6gFZJA6vBHkxcptTaUwHAtSozKnPTQ4BdAgAcALlBABlKwCcAlgDsA5iAC+BMOwQgyJDo2PhEpCAslJowhuYg1rYOLh7eTCxy0IGomLgExJBkLIoAnDBy8YmQ9k5unj4gALTkAUFOAK5hBWQVXn1AA

This one on Amazon is "momentary"
https://www.amazon.com/IndusTec-Pos...er+off+miniature+switch,automotive,146&sr=1-9

 

Sagor... That sounds perfect. I went to the link you attached and there are bunches of them. I need it to be super small. Can you direct me to one in particular?

 

A DPDT switch, wired as below, will do that:

View attachment 342091

Zapper.... Can you tell me how I would wire this switch if it had a center "off" position?
Joe

 

Sagor... That sounds perfect. I went to the link you attached and there are bunches of them. I need it to be super small. Can you direct me to one in particular?

The 3rd, 4th and 5th ones down that list would be the smallest I think.
If you filter that list with the smallest mounting hole, you get:
https://www.digikey.ca/en/products/filter/toggle-switches/201?s=N4IgjCBcoGw1oDGUBmBDANgZwKYBoQB7KAbRACYAWAdmrGpAKtoGYAGRim6liJucjAb8YggBydBo6gFZJA6vBHkxcptTaUwHAtSozKnPTQ4BdAgAcALlBABlKwCcAlgDsA5iAC+BMOwQgyJDo2PhEpCAslJowhuYg1rYOLh7eTCxy0IGomLgExJBkLIoAnDBy8YmQ9k5unj4g1GIsAUEheeGFkexglGrdbL1KA70lIJU21cl1aSAAtOStUE4ArmEFZBVe20A

Next you need to find the right connection type, usually solder pins like the first one in that list. Some of those switches may have shorter toggles (actuator height), if height is a concern, these 2 are the shortest in that list: (But one does NOT come with mounting hardware)
https://www.digikey.ca/en/products/filter/toggle-switches/201?s=N4IgjCBcoGw1oDGUBmBDANgZwKYBoQB7KAbRACYAWAdmrGpAKtoGYAGRim6liJucjAb8YggBydBo6gFZJA6vBHkxcptTaUwHAtSozKnPTQ4BdAgAcALlBABlKwCcAlgDsA5iAC+BMOwQgyJDo2PhEpCAslJowhuYg1rYOLh7eTCxy0IGomLgExJBkLIoAnDBy8YmQ9k5unj4gBoZZQSF54YUU7OSykjJgJT0glTbVyXVpINRiLAGtuWEFRexglGqRK5RKG2yrJcOWozUp9QQAtORzUE4ArosRFV5PQA

You wire the switch the same as originally shown, just in center off, none of the wires are connected internally.

 

Zapper.... Can you tell me how I would wire this switch if it had a center "off" position?
Joe

As sagor noted, there is no change in the wiring.

 

momentary - off - momentary

In toggle and rocker switches this is a common option, but I haven't seen it in slide switches.

Here are some rocker switches:

https://www.digikey.com/en/products...RUpAqImkkAFop9qPwBXNRcKA08veWhFdGwndVdKZnFkoA

ak

 

Almost without exception, the miniature toggle switches are half the size of slide switches.

 

Late entry here:

I am looking for a very small "Reverse Voltage" Board/Button that I can use to reverse the Polarity Feed for a small RC Motor.
The output should be 3.3 Volts and I need to be able to reverse the polarity with the slide of a switch or the push of two separate buttons.

Do they make tiny spring loaded "return to neutral" DPDT slide or toggle switches anywhere that you know of?

As others have said, finding a toggle [edit - slide] with center off AND spring loaded isn't something I've ever seen. Perhaps a specialty item might be able to be found but it doesn't seem to be something often used in commercial or hobbiest projects. Slide switches are even harder to find in a spring loaded configuration.

Your comments foster the question: "Do you want to be able to reverse the motor(s) only momentary? A momentary switch will only run the motor while holding the switch in THAT position. Letting go of the switch would seem to mean the motor has stopped running.

You also asked if there is a two button configuration that can do the same thing. I'm fairly confident there is one, though a solution doesn't readily come to mind. And I believe there's a chance that pressing both buttons at the same time could result in a short circuit, and that may blow your fuse - if fused at all. If no fuse you could damage your battery.

 

As others have said, finding a toggle with center off AND spring loaded isn't something I've ever seen.

Toggles and rockers are very common. Do you mean "slide"?

ak

 

Late entry here:


As others have said, finding a toggle with center off AND spring loaded isn't something I've ever seen. Perhaps a specialty item might be able to be found but it doesn't seem to be something often used in commercial or hobbiest projects. Slide switches are even harder to find in a spring loaded configuration.

Your comments foster the question: "Do you want to be able to reverse the motor(s) only momentary? A momentary switch will only run the motor while holding the switch in THAT position. Letting go of the switch would seem to mean the motor has stopped running.

You also asked if there is a two button configuration that can do the same thing. I'm fairly confident there is one, though a solution doesn't readily come to mind. And I believe there's a chance that pressing both buttons at the same time could result in a short circuit, and that may blow your fuse - if fused at all. If no fuse you could damage your battery.

The circuit for providing reversing polarity with two SPDT switches, such as relays, has been published on this sire perhaps 20 times in the past year. The identical circuit, using SPDT push buttons, has also been published. It is by no means "Rocket Science" .
Here is text description: The intended load device is connected, one terminal to the Common terminal of one push-button, the other device terminal to the common terminal of the other push-button. The negative supply terminal is connected to the normally closed terminals of both push buttons. The positive supply terminal is connected to the Normally OPEN terminals of both push-buttons.
I hope that description is not to complex to visualize.

 

Toggles and rockers are very common. Do you mean "slide"?

Yeah, that's it. Thanks for clarity.