hello,
I am new here.
my names Brian, and its good to be here.
I can use some help.
I am into RC trucks, and in my truck I have a Smoke maker that is made for a train track set.
SO I had to custom install it.
The smoke maker is hooked directly to my 11.1v lipo battery to create the smoke. (using a internal 10Ω resistor.
The smoke unit also has a fan to blow the smoke out.
It has a small 9v DC motor installed in it.
So to make the smoke come out proportional I have hooked the fan to my RC truck motor as that gets 0 to 10v from the ESC.
0v truck is not moving all the way to 10v the truck is at full speed so smoke comes out full blast.
I have hooked up the fan motor directly to the RC truck motor and it works proportional, so i know it works like that.
but when the truck is stopped my Smoker fan does not spin (because the RC truck motor has 0v getting to it)
This is bad for the internal 10Ω heating element.
so I decided I wanted to make the fan idle at about 2.5v all the time so a steady stream of smoke comes out my tail pipes.
(this will do 2 things make the truck look more real when sitting still, also it will keep the air moving across the heating element to keep it cooler.
that is where I am having my problem.
I decided to use a LM317 voltage regulator and have found a resistor calculator online to help me with that.
Also I am using full wave bridge rectifiers so that the fan does not spin in reverse when I put my truck in reverse. ( I did notice that those do draw a little power)
I am able to get the smoker fan to idle at a good speed now using LM317, but when I go to use my remote to move forward just a little bit my smoker fan shoots up really high in RPM's. it did not do this before when I had it hooked directly to the DC truck motor.
so I know it is a problem with my circuit.
can you look at my schematic and tell me why my smoker fan is going from my 2.5v steady idle then jumping up to a high voltage as soon as I go forward just a tiny bit at slow speed.
the smoker fan hits full blast or sounds like it.
I have included this video and my pictures so you can see for yourself my problem.
thanks again
Video
**broken link removed**
here's my truck
**broken link removed**
here is my smoker mounted and wired in the box
**broken link removed**
here is how it is wired.
**broken link removed**
please if you could take the time and read throught this and help me solve my issue of as to why when I have my circiut ran this way I have no more proportional smoke control of my smokers fan.?
thanks again for any help or tips you can give me.
I really appretiate it
Brian
I am new here.
my names Brian, and its good to be here.
I can use some help.
I am into RC trucks, and in my truck I have a Smoke maker that is made for a train track set.
SO I had to custom install it.
The smoke maker is hooked directly to my 11.1v lipo battery to create the smoke. (using a internal 10Ω resistor.
The smoke unit also has a fan to blow the smoke out.
It has a small 9v DC motor installed in it.
So to make the smoke come out proportional I have hooked the fan to my RC truck motor as that gets 0 to 10v from the ESC.
0v truck is not moving all the way to 10v the truck is at full speed so smoke comes out full blast.
I have hooked up the fan motor directly to the RC truck motor and it works proportional, so i know it works like that.
but when the truck is stopped my Smoker fan does not spin (because the RC truck motor has 0v getting to it)
This is bad for the internal 10Ω heating element.
so I decided I wanted to make the fan idle at about 2.5v all the time so a steady stream of smoke comes out my tail pipes.
(this will do 2 things make the truck look more real when sitting still, also it will keep the air moving across the heating element to keep it cooler.
that is where I am having my problem.
I decided to use a LM317 voltage regulator and have found a resistor calculator online to help me with that.
Also I am using full wave bridge rectifiers so that the fan does not spin in reverse when I put my truck in reverse. ( I did notice that those do draw a little power)
I am able to get the smoker fan to idle at a good speed now using LM317, but when I go to use my remote to move forward just a little bit my smoker fan shoots up really high in RPM's. it did not do this before when I had it hooked directly to the DC truck motor.
so I know it is a problem with my circuit.
can you look at my schematic and tell me why my smoker fan is going from my 2.5v steady idle then jumping up to a high voltage as soon as I go forward just a tiny bit at slow speed.
the smoker fan hits full blast or sounds like it.
I have included this video and my pictures so you can see for yourself my problem.
thanks again
Video
**broken link removed**
here's my truck
**broken link removed**
here is my smoker mounted and wired in the box
**broken link removed**
here is how it is wired.
**broken link removed**
please if you could take the time and read throught this and help me solve my issue of as to why when I have my circiut ran this way I have no more proportional smoke control of my smokers fan.?
thanks again for any help or tips you can give me.
I really appretiate it
Brian