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Forum Index : Electronics : Speedpot

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irishron40
Senior Member

Joined: 22/09/2014
Location: Ireland
Posts: 251
Posted: 04:57pm 03 Sep 2024
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Hello all.  I need a speed potentiometer for my 24vdc motor.

I heard there is a way to make one from a potentiometer and mosfets.  Is this correct? And if so how.

Thank you

Ron
 
Ziki_the
Newbie

Joined: 13/04/2023
Location: Yugoslavia
Posts: 39
Posted: 06:49pm 03 Sep 2024
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Hello,

Simple thing is PWM conntroler.
Try google, ne555 pwm motor conntroler.
Pozdrav iz Srbije
 
irishron40
Senior Member

Joined: 22/09/2014
Location: Ireland
Posts: 251
Posted: 08:26pm 03 Sep 2024
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Bought one but Not able to handle the
Current even though seller said 60v. 20A
 
Ziki_the
Newbie

Joined: 13/04/2023
Location: Yugoslavia
Posts: 39
Posted: 09:27pm 03 Sep 2024
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That is ok, then we can modify that one.
Try add more mosfet's or to see what board you have.
How big is the motor?
Pozdrav iz Srbije
 
irishron40
Senior Member

Joined: 22/09/2014
Location: Ireland
Posts: 251
Posted: 12:47am 04 Sep 2024
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Motor is 24vdc and consumes about 12 A

But prefer if I can build a wee circuit

I do lot of busking with piano and keyboards, but due to my health lifting those and then also depending on parking ,I build this type of mobility scooter.  I have two 12v batteries and can switch with a button from 12 to 24 volt.

I use the 12 we hen playing music as also my inverter is 12vdc.  When I leave I switch to 24 and that will power my motor and steering motor. All I have to do is park it at ge location and switch keyboards on.😃
 
Ziki_the
Newbie

Joined: 13/04/2023
Location: Yugoslavia
Posts: 39
Posted: 09:07am 04 Sep 2024
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Nice hoby,
12A motor is not to big problem for regular ali pwm controler board only.
I used some pwm for e-bikes, it have throtle input, brake input...
Your board did not worked or worked bad?

link
Pozdrav iz Srbije
 
irishron40
Senior Member

Joined: 22/09/2014
Location: Ireland
Posts: 251
Posted: 02:24pm 04 Sep 2024
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Will have other look.


One more bit of help advise needed😃

I also want this cart to be driven remote controlled as it's Easter for me to drive it in and out my van.

I have a wiper motor installed and also a potentiometer connected to the wiper.

I bought a transmitter and receiver which I also will post photo off.

I also do have a small servo, from which I intend to remove the circuit board and install that inside my wiper motor.

To make this steering work I'm sure I am missing one or 2 parts. I believe I also need a h bridge. But which one ?

As my help greatly appreciated

Thank you.



 
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