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  #1  
Old 09-26-2011, 11:35 AM
Solenoid_nak Solenoid_nak is offline
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Red face MD24 Sevo and Velocity / Speed

Hi guys I have a quick question . I'm thinking about buying the MD24. I just wanted to know if it's possible to have velocity control with servos and the MD24?

As in if I send a midi message with a velocity value of 128 would I get a more powerful rotation from the servo vs a velocity value of lets say 40?

Essentially can midi note velocity control how much volts the servo uses from 0 to maximum volts. Or can it be done with PWM?

Essentially I want to be able to control the amount of force and speed of a servo and not just have it on or off?

thanks
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  #2  
Old 09-27-2011, 08:26 PM
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John John is offline
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The only way to control the rotation force or velocity of the servo would be to send multiple MIDI messages with intermediate position "steps".

The servo will always move as fast/forcibly as possible to whatever position you give it.

Let me know if that helps.
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Old 09-28-2011, 11:08 AM
Solenoid_nak Solenoid_nak is offline
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Question MD24 Option A availabilty?

Hi John thanks for the reply. I'll give it a go.

Quick question when will the MD24 fully assembled version be available to buy?

thanks

"$69.95 - MD24 Option A
Fully Assembled with Terminal Blocks
Currently Unavailable."


Solenoid_Nak
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Old 10-04-2011, 04:18 PM
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John John is offline
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Quote:
Originally Posted by Solenoid_nak View Post
Hi John thanks for the reply. I'll give it a go.

Quick question when will the MD24 fully assembled version be available to buy?

thanks

"$69.95 - MD24 Option A
Fully Assembled with Terminal Blocks
Currently Unavailable."


Solenoid_Nak
Some parts are on order an I'll be able to make the Option A available next week.

In the meantime, I recommend the Option B. The only soldering required is the connectors (MIDI, pin header, terminal blocks). The smaller parts are already soldered to the board. The skill level required for the soldering is very low.
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Old 10-04-2011, 04:19 PM
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Feel free to send PM or email about the Option A next week if I don't get the product shipping status changed.
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Old 12-08-2014, 08:27 PM
flyweight flyweight is offline
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Quote:
Originally Posted by John View Post
The only way to control the rotation force or velocity of the servo would be to send multiple MIDI messages with intermediate position "steps".

The servo will always move as fast/forcibly as possible to whatever position you give it.

Let me know if that helps.
Does this mean that a smaller angle of rotation equals a lower velocity and a wider angle a higher velocity?

I was thinking to use multiple outputs to drive a servo with a different control voltages. Hoping that would result in different speeds. But I am not sure if that would work.
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Old 12-10-2014, 03:16 PM
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Quote:
Originally Posted by flyweight View Post
Does this mean that a smaller angle of rotation equals a lower velocity and a wider angle a higher velocity?
To some extent, I think so, yes. If the movement is very small, the servo arm won't have a chance to accelerate to full rotational speed before it hits its "target" position. However, once the servo arm reaches its top speed (whatever that is--it will vary by servo and load), additional movement won't make it go faster.

This is somewhat speculative. I'm not a servo expert.

Quote:
I was thinking to use multiple outputs to drive a servo with a different control voltages. Hoping that would result in different speeds. But I am not sure if that would work.
That sounds like a good thing to try, too.
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