Servo Twitch - RCCanada - Canada Radio Controlled Hobby Forum
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Old 08-07-2005, 05:38 PM   #1
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Servo Twitch

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Hello all.

I was hoping that someone could enlighten me on the topic of servo twitching...

I have just purchased a JR 8103H Tx package with a r700 receiver and 5 DS811 servos. Upon receiving the package I had plugged in all the servos into the receiver, turned on the Tx (set it to PPM to match receiver), and tried playing with the servos.

I noticed that all the servos work to the extent of their travel and respond pretty well, however, when I am not moving the sticks I am getting a small twitching among various servos at various times.

Anyone know why this is happening? ... and why?

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Old 08-07-2005, 07:00 PM   #2
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Hi there.

I have JR 783 and JR 652 transmitters as well as several R600 and R700 receivers. I also have a Hitec Supreme 7 channel receiver and a JR 549 receiver. (all analog servos)

I too have seen the servo jitter. However, I have only seen it on the R700 receiver indoors when my TX antenna was down, near the model (< 10 feet away). I don't recall seeing it outside.

I've never been able to really pin down what's causing it, but so far it seems to be isolated to the R700 receiver. Anybody have any further experiences? :

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Old 08-07-2005, 07:09 PM   #3
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I have heard it might be fluorescent lighting try it outside.

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Old 08-07-2005, 07:10 PM   #4
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You may be swamping the RX by being too close with the TX. Try backing away and give it a try.

Sometimes when a batt comes off a charger the voltage is still high and the RX can't tolerate it. this is usually more prevalant with 5-cell packs. Try running the servoes for a few minutes to drop the voltage.

Corroded connectors could also be possibility.

Mike Sebastien
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