I made my robot work from a wireless PS2 control. It's actually very simple. I'll try to post some pictures and maybe a video.

So wait, you were listening for static changes on a channel that already had static? -_^ Use a static free channel, then use the motor.

Just try grounding the motors metal casing. If it doesn't solve it, at least to you tried something. What would be more helpful is if you show us an actual picture or video of your setup. Show us your wiring.

Give us something, otherwise were not going to continue to help you.

If your not sure if the voltage is dropping or not, use a volt meter to confirm that. However, you did say that you put the video monitor on a different power supply and it did nothing, SO maybe voltage drop is not the problem. You are most likely having a shielding issue. Do like G_Mike says, and rewire it correctly.

If you want another way to test the RF from the motor, is to simply use an AM radio. Set the radio to a clear station, and try to turn the motor on and off. If you get interference when the motor is on, then you need to shield the motor. My guess is the motors metal casing is not shielded. What you can try is run the motor with the radio on, then use a wire to touch the metal casing to ground. If the interference goes away then you know you have a shielding issue.

Quick question, does the actuator go forward and backwards or just one direction? Your drawing shows that it is only going in one direction.

I wonder if your motors outer casing is shielded? If its not, that might cause the interference.

This is what I mean, I can't find a better picture at the moment, sorry. EDIT: picture link didn't work

Actual link http://letsmakerobots.com/node/22353

Yea you can do that, but does your motor shield allow you to control 2 motors AND a servo? What kind of motor shield do you have that way we can properly help you?

Post a link to your type shield if you can.

@everyone

Again it was only meant to be pseudo code, not a working code! The OP sent me a personal message saying it wasn't working, so it tested it myself, and it DIDN'T work. (Obviously)
So I messaged him back the actual working code, and I got back "Thankyou it works!"

@PaulS

I did and I did.

The simplest things can sometimes make the biggest differences.

Why not just this,http://www.ebay.com/itm/USB-UART-32-Channel-Servo-Motor-Controller-Driver-PWM-For-Arduino-Robot-A130-/251192458425?pt=LH_DefaultDomain_0&hash=item3a7c3cbcb9

Its a little expensive but it will do what you want it to.

Use a MOSFET transistor.

http://www.ece.ucsb.edu/Faculty/rodwell/Classes/ece2c/labs/Lab_2_2C_2007.pdf

You might need a capacitor to smooth out the output signal of the transistor, going to the motor. Just put a capacitor from the between the motor contacts, make sure you wire it correctly (polarized). It should get rid of any noise, unless the noise is not from the PWM but from a defect in the motor itself.

470uf should be more than enough.

You did a search in this forum and found nothing? Funny, because I found this. It's not 100% what you want to do but if you tweak it, it will work.
http://arduino.cc/forum/index.php/topic,137352.30.html

I sent you what to change. Keep in mind that what I gave you before was only meant to be pseudocode, an example, not the actual working code.


I am now a GOD member!

Look at http://biosrhythm.com/?p=933

So get one to test, and if it works get another one, then the third. NOTE: you can NOT read all three sensor simultaneously, only individually.

Code:

void loop()
{
  // read the value from the soil detector:
  sensorValue = analogRead(sensorPin);     
  if(sensorValue<400)
     {
       !latch; // This detects whether the switch changed or not
       latch ? LED_Burst()  : (/*Just smile and wave*/ );  //conditional statement,  compressed IF/ELSE statement
     }
}   //problem was here, you needed this

If you tried to compile it in the arduino software, you would have gotten an error in the LOOP() telling you, you need a closing bracket " } " before void LED_Burst()