Model Boat Mayhem

Technical, Techniques, Hints, and Tips => Radio Equipment => Topic started by: ntg06 on September 08, 2009, 05:49:58 pm

Title: Servo moving!?
Post by: ntg06 on September 08, 2009, 05:49:58 pm

Hi,
I have a new setup, and have been trying it out on the bench.
I have noticed that the servo does a 90 degree rotation when I turn on the radio gear (not the normal twitch), and doesn't go back to its start position.
The servo will be operating the rudder, so will totally screw up the linkages if it does it when properly installed.
I have a Futaba s3003 servo, Viper Marine 15 ESC, and Giantcod 2.4GHz Tx and Rx.
Have I connected something up wrong?

Title: Re: Servo moving!?
Post by: dodgy geezer on September 08, 2009, 05:54:50 pm

I would be interested in the answer to this as I have been thinking about one of those Tx/Rx combinations.

Has the Tx/Rx been working ok with any other servo/esc before?

Title: Re: Servo moving!?
Post by: ajb68 on September 08, 2009, 05:59:09 pm

could it be the wireing on the sevo plug as sometimes they need changing round to work with different receivers  {:-{ regards Andy

Title: Re: Servo moving!?
Post by: Martin (Admin) on September 08, 2009, 06:00:14 pm

Mine doesn't do that.
 Have you tried a different servo?

Title: Re: Servo moving!?
Post by: 787Eng on September 08, 2009, 07:28:06 pm

Not familiar with your brand of radio, but are you sure its not the position you bound the radio in?
as when you bind the radio this sets the fail safe positions the servos go to in the event the receiver loses reception.

Easy way to prove it is turn the TX/RX on wait a while to let receiver connect to the TX and then turn off the TX and see where your servo moves to....keep fingers away from the prop etc just in-case it starts your motor starts up.... %%

Regards
Mark

Title: Re: Servo moving!?
Post by: ntg06 on September 08, 2009, 07:44:29 pm

I am new to all this, so only have this servo, Tx and Rx.
If it was the default position, surely it would only move once? I can get it to move each time I turn on Tx and Rx (it either moves clockwise or anticlockwise).
The pics I have seen showing a servo connected to this Rx show the wire order the same as I have them.

Title: Re: Servo moving!?
Post by: Martin (Admin) on September 08, 2009, 07:58:41 pm

Try this again:  http://www.modelboatmayhem.co.uk/forum/index.php?topic=19330.msg188075#msg188075

Title: Re: Servo moving!?
Post by: GG on September 08, 2009, 09:09:15 pm

Lets not start trying to solve problems that are not there.
Need more information.
1) has it ever worked?
2) is it charged?
3) do you plan to use the ESC to supply the receiver power?  if so is the ESC connected to a battery?
4) as is is a 2.4 GHz outfit, has the receiver been "bound" to the transmitter?

An answer to some, ideally all, of these questions and members of this board might be able to offer sensible and hopefully safe suggestions.
Just spotted Martin's excellent suggestion!
GlynnG

Title: Re: Servo moving!?
Post by: ntg06 on September 08, 2009, 09:50:11 pm

Martin, that fixed it. Thank you very much.