fet mod with regulator board.

[Desslok]

lots of folks have been wanting an all in one solution for doing the fet mod with the voltage regulator all on one board.

well I have been thinking and looking at various speed control's on the net. It has occured to me that the bec function of most speed controlls could be used to power the xmod electronics.
typicaly the bec is 5v at 1.x amp capacity .
Hooking it up would be pretty standard stuff all except one thing.
I dont know where on the electronics board I could grab the signal from the reciever board to feed into the speed control.

I just picked up a extra xmod that I am going to tear the electronics apart to investigate more fully my idea.

the speed control I am picking up to use on this experiment is here. http://www.ipdracing.com/products.htm
check out the R-18 compition speed control. it is rated for up to 10 cell's so li-on or li-polly high voltage experiments would be no problem for it.

if somone has an Oscope and can help me find that signal I would be surely greatful.

[Desslok]

I got my esc from ipd on order. Yeah !!

[Jshwaa]

That esc just has FET's in it, just like your car already has. The FET's in there might be of higher quality, but it's not introducing anything different tech-wise. It could be interesting to run FET's in the car AND have that speed control wired in externally for extra channel current to the motor.

And, uh, that ESC is not going to solve the problem of regulating voltage to IC1 or the receiver board. You'll still have to apply a regulator.....that is if you're going to use excessive voltage.

[Desslok]

The way I envision wireing this up.

the only power that the motor will see is from the esc.
the bec of the esc will power the stock electronics board.
the stock electronics speed controll will not be hooked up to the motor at all. <just trying to be clear>

I believe that the bec on the esc is regulated to 5v at 1.x amp draw. this should be pleanty for the servo and reciever.
I will know for sure once I get my esc and and can do some testing.

in my mind my only real question is what wire coming off the reciever board is the throtal signal<sp>
I was hopeing somone with a scope would take a look at the wires coming off the reciever board and tell me what color the throtal signal wire is.
but I can experiment and find out the correct signal wire.
so In a few days all questions will be answered :-) one way or another.

[Desslok]

I got my IPD R-18 esc 2day man this is so sweet.

[neurokinetik]

Wow, that thing is tiny. Unfortunately, that leads me to believe it won't be able to handle much more power than what we already have. They seem to claim 18A, so we'll see.

[Desslok]

ok with a 12v battery as my power source I powered up my esc and tested the bec. my input voltage was 13v and the bec held steady at 4.96v see pictures.

now I have to wait as I am flat broke till my next payday I will buy a servo extender so I can wire up the xmod with out hacking up the esc. I know they cost only like 4bux but I only have 30.00 to live on till the 1st of the month.

[Desslok]

voltage at the bec.

[Desslok]

Batt

[Desslok]

esc powered up.

[Desslok]

I pulled apart my xtra xmod and pulled all the electronics out to look at.

I was expecting 4 wires coming off the reciever but there are only 3 so that means that the steering and throtle signals are mixed.
sure enough following the trace leads to the cpu on the board.
So now the question is where can I grab the forward throtle signal off the board.
at this point I am stuck. I dont have any way to examine the signals on the board.

Anyone that has an oscope will you please do some checking on the board for the forward throtle signal and let me know where it is.
thx.

Disregard my last post. Signals to dirty to find. Sorry no Clean Lab here.