Pages: [1]   Go Down
Author Topic: What is this and how can i control it!?  (Read 874 times)
0 Members and 1 Guest are viewing this topic.
Rome - Italy
Offline Offline
Full Member
***
Karma: 2
Posts: 246
Arduino UNO "Noob" User
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

I would make a self controlled rc car and i unmounted an old Nikko toy that has got this magnetic system to control the steering angle.

How can i control it with Arduino?

Thanks  smiley-kitty



Logged

Port Elizabeth, South Africa
Offline Offline
Full Member
***
Karma: 2
Posts: 168
Life's to short to be an adult!
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

This does steer both ways right? Otherwise see if you can dismantle that bit to see how it works "mechanically" then possible see if there is a voltage variance when you move the wheels using a multimeter.
Logged

"The really amazing thing is how many people are successful with their Arduino projects considering the fact that so many of them do not have a technical background.  A lot of them seem to try, and succeed with, projects that no sane engineer would even attempt." - floresta commenting on the proper use of LCD displays

Rome - Italy
Offline Offline
Full Member
***
Karma: 2
Posts: 246
Arduino UNO "Noob" User
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

moving it there is a variance of 0.005V  smiley-neutral
Logged

United States (Texas)
Offline Offline
God Member
*****
Karma: 2
Posts: 525
Arduino socks
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

just  a guess, the thing with wires looks like an electromagnet. it seems the steering shaft has 2 magnets on it, one polarity attracts one, and repels the other. reverse it and it turns the other way. you should be able to control it with an h-bridge.
Logged

Rome - Italy
Offline Offline
Full Member
***
Karma: 2
Posts: 246
Arduino UNO "Noob" User
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

But with Pwm and H bridge i cant reverse the rotation sense?

So if i have understood it works in this mode... example... +5V ->Right ; -5V -> Left   smiley-confuse
Logged

United States (Texas)
Offline Offline
God Member
*****
Karma: 2
Posts: 525
Arduino socks
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

nope.  +5<---coil---->ground is one direction,   ground<---coil---->+5 is the other direction. you could use a +-5 volt supply and use only 2 transistors... but thats a whole other level of complication that would pretty much have no benefits.
Logged

Rome - Italy
Offline Offline
Full Member
***
Karma: 2
Posts: 246
Arduino UNO &quot;Noob&quot; User
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

i don't know how to make an H bridge.... probably a small servo its much easy to control?
Logged

Rome - Italy
Offline Offline
Full Member
***
Karma: 2
Posts: 246
Arduino UNO &quot;Noob&quot; User
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

 smiley-grin

thank you
Logged

Belgium
Offline Offline
Jr. Member
**
Karma: 1
Posts: 80
Arduino rocks
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

Have a look here :

http://www.laboelectronique.be/english/ardponth_ang.html
Logged

field road, jupiter creek
Offline Offline
Sr. Member
****
Karma: 3
Posts: 348
Arduino rocks
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Just my opinion, but.....

Get rid of it and put a small servo in there!
Logged

Pages: [1]   Go Up
Jump to: