Strange servo movement

My servo's arrived finaly but now they don't seem to work. It's these:

http://hobbycity.com/hobbyking/store/uh_viewItem.asp?idProduct=8782

The parallax and the old servo's I used so far don't have any problems. But when I hook these up I get some really sputtering movements. Even stranger, they make little movements even when there is no code running. Anyone a clue?

Since the code has been
Since the code has been show to work, it’s most likely an electrical noise problem. Check out this post, and also have a look at some of the ‘jitter’ posts rik mentions, they’re good for future reference if nothing else.

No good

Tried the capacitator schema but it din’t resolve the servo problem. I asked for support from bluebird (the guys that make the servos) and mailed them a video etc. Let’s see what they have to say as it’s only these servos that play up.

To their benefit, I also have a problem with the paralax servo now. Works great untill you need to extend the wire. Simply does nothing when I hook it up to a 50cm extension cord. The Hitec and Ace servos that I have do the job even with longer wires.

Some cra@ they make these servo guys. Maybe I’m just being spoiled since Im used to stuff that works when bought new.