servo boards as motor controllers.

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earthwormjim
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servo boards as motor controllers.

Post by earthwormjim »

What are the issues with doing this.
I am finding that I have to trim both axis every time I power up.
Why is this,and is there any way to combat this?
If we could get them to work well,they would be great,as they are small/light/cheap.
Or are there more issues?
Cheers Jim. :)
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earthwormjim
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Re: servo boards as motor controllers.

Post by earthwormjim »

Finding a way to increase the dead spot in the middle would be good?
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Team Nuclear
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Re: servo boards as motor controllers.

Post by Team Nuclear »

Hi Jim servo boards a bit of a pain but the way i do it is...
I centre the trims on the transmitter channels I am using then I turn the potentiometer to the dead spot. I then get my volt metre out (that measures ohms)
and measure the ohms between the middle and right wire and the middle and left wire, this shoul tell you the right resistor to use. You then solder the resistor to each wire then trim it if it is necessary.
Ben
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earthwormjim
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Re: servo boards as motor controllers.

Post by earthwormjim »

Thanks. Should the dead spot move each time I power up?
I cant see why it should?
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Rhys
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Re: servo boards as motor controllers.

Post by Rhys »

you can increase the dead spot in the middle by changing the expo settings on your transmitter
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earthwormjim
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Re: servo boards as motor controllers.

Post by earthwormjim »

Ah,interesting. Thanks. :)
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haz
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Re: servo boards as motor controllers.

Post by haz »

hi, just a quick question, how can i run my servo boards at 8v witouth it going to the rx?
Anoptimistprime
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Re: servo boards as motor controllers.

Post by Anoptimistprime »

what's the smallest servo board i can get away with on some gearmotors?
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haz
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Re: servo boards as motor controllers.

Post by haz »

a 9g servo board, like an sg90
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Rhys
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Re: servo boards as motor controllers.

Post by Rhys »

haz wrote:a 9g servo board, like an sg90
Seriously? I thought they'd fry those boards.

As for putting 8v in, you need to regulate 5v into your rx and then the black and red cables from the 8v battery should go directly into the servos, with only the white wire from the servo going into the receiver. But I've never actually tried this, so be careful. Also, I wouldn't recommend putting 8v into a tiny servo.
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