How do gimbal motors stay in place?

[traw1234]

I was just wondering how gimbal motors can stay firmly in place, but also can move if need be. Is this soley programming, or also the hardware? I would love this info for a future project...

 

[traw1234]

Anyone?

 

[Benjamin Kenobi]

They use brushless motors, so...it's all done with magnets!

 

[SleepyC]

View attachment 25673

 

[violetwolf]

They run on alternating current (AC). The ESC's send pulses at or above 400 times per second. Because there are three wires (and the esc is essentially a computer) it can send forward or reverse direction commands. So, this is what's happening, the esc is sending fwd and reverse pulses very rapidly.

This is a highly simplified answer but you get the idea.

 

[cootertwo]

The gimble control board has similar gyros, etc. as the flight controller, that tell it what's level, etc. etc. You'll notice they jump and quiver when first plugged in, they are "initializing", or "booting up". I'm wondering why no one has come up with a "mini" 1 axis gimble, for a FPV mini camera. Some have tried using a servo, or weights, but I'd like to see a "micro" version.

 

[SleepyC]

The gimble control board has similar gyros, etc. as the flight controller, that tell it what's level, etc. etc. You'll notice they jump and quiver when first plugged in, they are "initializing", or "booting up". I'm wondering why no one has come up with a "mini" 1 axis gimble, for a FPV mini camera. Some have tried using a servo, or weights, but I'd like to see a "micro" version.

I have seen guys take the smaller Alexmos boards and just hook up the tilt to their FPV cam.. works great.