Speed Control help

[DAR748]

Hello everyone, great forum you have here.

Well I always wanted to build a robot, but either never had time or money.
We'll now I have time & no money.   But I got the biggest part.
I got a electric wheelchair runs great but it's alittle beat up.
It has the charger onboard, new batteries, and the price was right.
Plus it will put a 300lb man a pretty good speed.  And I read here that they are good setups to start.
I pulled the joystick box off & opened it up   
From the control board to the joystick there are 5 wires. 
My question is could I remove the joystick & hook a remote right up to it, or will I have to buy or build a speed control

I'm going to start with a lawnmower / snowblower 
Yes I see alot of people doing it  but I just gota jump on the bandwagon.
I'm going to take it a step above all the internet setups by adding a deck lift. Then for the winter I have a small 2cycle snow blower that i'm going to replace the mower with.

Again Great site & thanks for any help
DD

[airman00]

from what I've heard people have put in their own speed control


BUT

open up the controller and upload pics of the inside circuit parts ( where all the electronics are) take lots of pics and then we'll help you better

[airman00]

http://members.iinet.net.au/~tnpshow/RCLM/advint.htm

[DAR748]

Ya that guy really doesnt show what he did. And the control I have is different.
My background has all gas cars afew planes & a heli  so i'm alittle out of my field here, But can learn anything.
Don't want to add the pic as they are huge so you can see them clear.
http://home.insightbb.com/~danswoodshop/ch.JPG
http://home.insightbb.com/~danswoodshop/ch1.JPG
http://home.insightbb.com/~danswoodshop/ch2.JPG
Thanks
DD

[SmAsH]

hmmm...the pics are a bit blurry but i have done this before and hooked up my computer joystick to a five digit keypad...so it is possible but hard..

~smash

[airman00]

connected to a 5 digit keypad meaning what??? what did the thing do?

[DAR748]

I'm going remote control  not sure how a keypad would help me.
Will be getting a 4ch radio next week. 
As for the lift on it I think im going with a threaded rod like on a cnc.
Fast easy & FREEEEEEEEEEEE   I love that word.
What I was thinking was use servo wires & cut the joystick off.
Try & find a wire control diagram & hook right to the receiver.
Do you think this would work >?< 
Thanks
DD

[SmAsH]

hmm..yea that might work i would prob have no idea tho

[airman00]

What I was thinking was use servo wires & cut the joystick off.
Try & find a wire control diagram & hook right to the receiver.
Do you think this would work >?< 
Thanks
DD

NO

ok the reciever is giving out a pulse which is will work for the servos only! The controller might take a pulse but it probably takes a different pulse and probably operates differently. don't do it

[SmAsH]

lol as i said i have no idea lol


~smash

[DAR748]

Ok what would be a "low cost" way to make it work >?<

[SmAsH]

if you could find a set thats cheap theres a way


~smash

[Bubbles]

What I was thinking was use servo wires & cut the joystick off.
Try & find a wire control diagram & hook right to the receiver.
Do you think this would work >?< 
Thanks
DD

NO

ok the reciever is giving out a pulse which is will work for the servos only! The controller might take a pulse but it probably takes a different pulse and probably operates differently. don't do it

If the controller you are talking about is a speed controller for a dc motor than it will operate just like a servo (at least from a control stand point) so you can send the same signals to a motor controller that you can to a servo and the controller will convert that signal into something the motor understands (so basically a dc motor with a controller is just a really expensive modded servo)

[DAR748]

http://www.pennyandgiles.com/docGallery/228.PDF
I found this. 
Now I'm not sure my idea will work.
What it looks like is a old manual speed control off a rc car.
The # on the control panel are Perry + Giles Pilot Type # D49669/4
But if I can't wire this cheap I'll have to make a servo plate that will let both servos swing.
Really easy idea but it ill be big & ugly, and I will also lose function of the joystick its self.

[Admin]

reminds me of this post:
http://www.societyofrobots.com/robotforum/index.php?topic=2635.0

you might also find these wheelchair posts useful

[ed1380]

what you want is a very powrful ESC.

electric speed controller

it takes a servo imput and drives the motors based on that

but sadly they are pretty expensive, unless you can take the drivers from your control board