Thread: My 3 axis skull...in progress

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Originally Posted by gmacted

Trying to determine if the power supply is the problem would be a tricky thing without an oscilloscope. If you have a voltmeter, you could monitor the voltage output of the supply. During the entire routine, the voltage should remain constant. If there is a large current draw and the power supply is not capable of supplying the current, the voltage will "fold back" to compensate. This can be described as a "brown out".

What are you using for a power supply? Voltage and current rating? What are you using for servos? This will help to determine if the power supply is the problem.

Another thing that caught my eye is the power switch. What's the current rating on the switch? Does it get warm? If so, this could be your problem. You could try and short out or remove the switch to see if your problem goes away.

Hi gmacted, thanks for the response.

We are using sg5010 servos and a mini ssc card
The card has two power sources. One is a 9 volt battery (in the black compartment) and the other is an adapter/wall wart thingie. Its input is 100v-240vac 50-60hz 0.2a Output is 5vdc 1.5a
Pieter built the box and added the power switch himself.
I'm pretty sure he has an oscilloscope and a voltmeter. I'll pass your suggestions on to him so he can check the switch and output during the routine.

MsM

Ok thank you very much HalloweenBob. I think I understand.. I will be using the SSC-32, 3 HS-422 and 1 HS-81...
I should have said that when I asked the question...

This is for a 3 axis bucky with tilt, rotate, nod & mouth. (HS-81 is for the mouth)

Originally Posted by MsMeeple

Hi gmacted, thanks for the response.

We are using sg5010 servos and a mini ssc card
The card has two power sources. One is a 9 volt battery (in the black compartment) and the other is an adapter/wall wart thingie. Its input is 100v-240vac 50-60hz 0.2a Output is 5vdc 1.5a
Pieter built the box and added the power switch himself.
I'm pretty sure he has an oscilloscope and a voltmeter. I'll pass your suggestions on to him so he can check the switch and output during the routine.

MsM

MsMeeple,

I think your power supply may be the source of your problem. I couldn't find any current specs on your servos, but I think that 1.5A may not be enough current to drive them consistantly. I would suggest trying a "beefier" servo supply (3A) to see if that will fix your problem. I suspect that it will.

Originally Posted by gmacted

MsMeeple,

I think your power supply may be the source of your problem. I couldn't find any current specs on your servos, but I think that 1.5A may not be enough current to drive them consistantly. I would suggest trying a "beefier" servo supply (3A) to see if that will fix your problem. I suspect that it will.

Here are the specs that I was able to find:

Tower Pro HS-SG-5010 Standard servo

Spec:

- Size 41mm x 38mm x 20mm
- Weight 1.4 oz
- Operation Voltage 4.8V - 6.0V
- Compatible with JR/Futaba/Hitec/GWS
- Connector Wire Length 320mm
- Servo arms and screws are included

Features:-
- Operating Speed: 0.20sec/60 degrees 4.8V 0.16 sec/60 degrees 6.0V
- Torque: 3.1 kg/cm (4.8V) 4.5 kg/cm (6.0V)
- 3 pole ferrite, all nylon gear. Top boll bearing.

They were given (key word here lol) to us by someone who was involved in radio controlled airplanes but stopped.

Originally Posted by gmacted

I'm using a Prop-SX controller (with a 50 MHz oscillator) and have my baud rate set to 38400.

I'm using an SX as well...did you use a joystick to capture movements? It would be nce if VSA let you capture all 3 axis movements at once...

I've been thinking about trying Parlay...has anyone used PayLay with an SX? Can Parlay be used to create a VSA file without being attached to a controller? I'm going to play with it a little tonight to see what I can do.

Thanks in advance!

- HW

Originally Posted by MsMeeple

Here are the specs that I was able to find:

Tower Pro HS-SG-5010 Standard servo

Spec:

- Size 41mm x 38mm x 20mm
- Weight 1.4 oz
- Operation Voltage 4.8V - 6.0V
- Compatible with JR/Futaba/Hitec/GWS
- Connector Wire Length 320mm
- Servo arms and screws are included

Features:-
- Operating Speed: 0.20sec/60 degrees 4.8V 0.16 sec/60 degrees 6.0V
- Torque: 3.1 kg/cm (4.8V) 4.5 kg/cm (6.0V)
- 3 pole ferrite, all nylon gear. Top boll bearing.

They were given (key word here lol) to us by someone who was involved in radio controlled airplanes but stopped.

MsMeeple,

Maybe I didn't choose the correct wording. I didn't mean current (recent) specs, I meant "current draw" (as in amperage requirements). I was able to find those specifications, but I couldn't find how much current they would draw under normal load conditions. I still think your power supply is not supplying enough current (Amps) for the servos to function during heavy load times (i.e. all moving at the same time).

Originally Posted by Haunted Wolf

I'm using an SX as well...did you use a joystick to capture movements? It would be nce if VSA let you capture all 3 axis movements at once...

I've been thinking about trying Parlay...has anyone used PayLay with an SX? Can Parlay be used to create a VSA file without being attached to a controller? I'm going to play with it a little tonight to see what I can do.

Thanks in advance!

- HW

I did not use a joystick to capture the motion. I did it all by hand.

Could you post a link to "parlay". I'm not familiar with that.

You can use a Vex transmitter with a Prop SX to capture all of your motion at the same time. I bought one to see how it works, but I don't plan on doing anything with it until after Halloween.

Here you go. Here is a a link to a thread with Parlay.

http://www.halloweenforum.com/group-...tml#post447539

Originally Posted by gmacted

I did not use a joystick to capture the motion. I did it all by hand.

Could you post a link to "parlay". I'm not familiar with that.

You can use a Vex transmitter with a Prop SX to capture all of your motion at the same time. I bought one to see how it works, but I don't plan on doing anything with it until after Halloween.

Were you able to use VEX with VSA?

Or...are you running completely standalone?

What type of speakers is everyone hooking up to their Skulls? I would like to use some rock speakers that will be near the skull but I am not sure how to connect them to my laptop. Is there an adapter I can use to go from speaker wire to plug into the laptop?