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HelicopterMain Discussion › GY240 GYRO?
09-07-2003 03:19 AM  14 years agoPost 1
YOUNGBLOOD

rrApprentice

Diamond Bar CA

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can any one tell me what the volts should be coming out of this gyro to the servo I am getting 4.30 V I this normal??

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09-07-2003 12:51 PM  14 years agoPost 2
SteveH

rrProfessor

Texas

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I'm assuming you are measuring the votage at the power leads going to the servo, the red and black, and the voltage should be the same as the voltage going into the gyro from the receiver. If you have significantly less than loaded voltage taken at the charge jack, there is most likely a problem with one of your connectors. If you have some long extensions to place the gyro in the rear of the heli, there can be some slight voltage drop in those if you are measuring the voltage with a loaded meter. Hope this is of some help.

The government cannot give you anything without first taking it from someone else.

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09-07-2003 11:11 PM  14 years agoPost 3
YOUNGBLOOD

rrApprentice

Diamond Bar CA

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Thank s but I need to know what the voltage is from the red wire from the gyro and the white signal wire from the gyro this will tell me the voltage that the gyro is putting out.. And if you move the controll stick up and down or left to right it will change with the imput you give it...CAN ANY ONE CHECK THIS PLEASE... THANKS......

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09-07-2003 11:33 PM  14 years agoPost 4
G.Man

rrProfessor

Bristol

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is the gyro working?

do you have some problem?

the whole voltage question seems a little irrelevant if the gyro is working...

specially the voltage on the white (signal) wire

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09-07-2003 11:45 PM  14 years agoPost 5
YOUNGBLOOD

rrApprentice

Diamond Bar CA

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I need to know this because the gyro is working but is real slow,, the servo will not move as fast as it needs to.. Why is it so hard for any one to check this I would greatly appreciate this I know everyone has been in my shoes some one please help... And yes the gyro works but I have two new esc and none work they will only work on the receiver,,and the receiver volts 4.50 and up so I think the gyro is bad but I will only know for sure if some one can tell me what the volts are from the signal and positive wire...

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09-07-2003 11:55 PM  14 years agoPost 6
Spitfire_mk5

rrKey Veteran

Canada

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Voltage desn't matter

.

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09-08-2003 12:08 AM  14 years agoPost 7
G.Man

rrProfessor

Bristol

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hmm so you are using an ESC with BEC circuit...

lots of em cant cope with 4 servos and a gyro...

try using a dedicated BEC and you will probably cure the problem

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09-08-2003 12:39 AM  14 years agoPost 8
YOUNGBLOOD

rrApprentice

Diamond Bar CA

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Well this is the set up that heli-hobby has on there web site I followed there directions two a tee all I need to know this it will tell me if the gyro is truelly bad the volts or volts from signal wire are all 4.50 volts and up and both esc work great with that the only time they do not work is when they are hooked up to the gyro..well it seems no one will help me on this so i am just going to send it in thanks guys for your ideas...

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09-08-2003 02:39 AM  14 years agoPost 9
SteveH

rrProfessor

Texas

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Spitfire_MK5 is correct. There is no DC voltage on the signal wire you can measure with a volt meter. The signal on the white wire is a pulse signal that varies in width and the only way you can measure it is with an oscilloscope.

Additionally, if the servo is moving too slow, the problem is most likely the servo, not the gyro. You can prove that by plugging the servo directly into the receiver, bypassing the gyro, and if it is still too slow, the problem is the servo. Hope this helps.

The government cannot give you anything without first taking it from someone else.

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09-08-2003 03:05 AM  14 years agoPost 10
YOUNGBLOOD

rrApprentice

Diamond Bar CA

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SORRY Guys you are wrong on that one I already had a guy forgot his call name but he tested it the way I had discribed and he says that he is getting 4.96 on a 1200 mah batterie so that is my problem all you need to use is a volt meter its not that hard to do it really only takes a sec.. so thanks for the idea but my gyro is already in tha mail....

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09-08-2003 03:43 AM  14 years agoPost 11
KnimRod

rrApprentice

Central Michigan

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"all you need to use is a volt meter"

Sorry, but that is absolutely not correct. The signal wire transmits a pulse width modulated control signal to the servo. The voltage level is irrelevant providing it's above the detection threshold.

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09-08-2003 03:52 AM  14 years agoPost 12
YOUNGBLOOD

rrApprentice

Diamond Bar CA

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Well sorry it dont work for you that is how I alway test my R/C stuff I just take the red+ wire and the white or orange signal wire and move the stick left to right or up and down depending on what channel it is on and the volts well go up one way and down the other the higher the volts the faster the servo speed You should try it when you get a new volt meter that works

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09-08-2003 04:22 AM  14 years agoPost 13
KnimRod

rrApprentice

Central Michigan

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Believe it or not, it's not working for you either...

The servo control signal is a pulse train of 1mS to 2mS pulses (active high) that occur in a 10mS to 20mS period. A 1.5mS pulse would put the servo in its neutral (center) position. The servo's position is dictated by solely by the pulsewidth. The voltage level and even the duty cycle, is irrelevent. Any kind of measurement with a volt meter will yield somewhat unpredictable and inconsistant measurements from meter to meter and source to source.

And by the way.. my volt meters work just fine thank you.

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09-08-2003 04:31 AM  14 years agoPost 14
YOUNGBLOOD

rrApprentice

Diamond Bar CA

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Well I know that there other ways of doing things you got your way and I got mine and a volt meter will messure volts how would one volt meter read one thing and another read another.... All I know is that my gyro is bad and when I get it back how ever long that may take I will post to show what the results are...

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