"Dear All,
I am using continuous rotation servo for 'Yaw' control of my camera gimbal. I am using it for stabilization around a setpoint/ target angle, using PID's.
If I give a target of say 60 degrees, the servo should adjust its…"
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Rotating object at 60RPM
Started this discussion. Last reply by Shyam Balasubramanian Nov 3, 2012. 19 Replies 0 Likes
HiI'm looking to rotate an object (probably going to be an LED lighting system) at 60RPM.I'm familiar with using Arduino, but haven't had any experience with RC electronics.Should I be using an ESC…Continue
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James Printer commented on Paul's blog post Raspberry Pi Computer To Cross The Atlantic Ocean In Autonomous Boat"What does it matter if it gets swamped, if it floats back after the storm has ended?"
Fabien Bruning replied to James Printer's discussion Rotating object at 60RPM"You can get relatively cheap optical encoders (about 30$) that give your Arduino the rotational speed. Simply take the desired speed, subtract the current speed and multiply that by some suitable constant. Output that to PWM and it should work. (the…"
James Printer replied to James Printer's discussion Rotating object at 60RPM"I don't believe I said there were two.
Ok will look at regulated power sources.
"
Michael Pursifull replied to James Printer's discussion Rotating object at 60RPM"There are three lines into a servo, not two.
Use a regulated power source."
James Printer replied to James Printer's discussion Rotating object at 60RPM"Ah wow thanks Mike. :)
Also currently trying the mod to make the servo into a simple continous rotation motor, with any luck running it directly from 6V could do the trick.
If I have a continous rotation servo, and run it off a PWM controller,…"
James Printer replied to James Printer's discussion Rotating object at 60RPM"Meh just realised I'm going to need to use a Arduino controller to send PWM to this continuous servo. I only want it to go at full speed. Would connecting the PWM to DC to make it 100% send it at full speed?"
James Printer replied to James Printer's discussion Rotating object at 60RPM"The continous servo is specified as moving fastest at 6V.
I am considering using a LM7085 voltage regulator and a 9V power source, and letting the voltage regulator output a constant 6V.
This should maintain a constant speed until the batteries…"
James Printer replied to James Printer's discussion Rotating object at 60RPM"Ok checking out continuous servo mod, thanks :)"
James Printer replied to James Printer's discussion Rotating object at 60RPM"Thanks for your help.
Can you think of a way to maintain the same speed... I'm thinking if the batteries run down a little it will go slower, and ideally I would like some way for this to be maintained."
Michael Pursifull replied to James Printer's discussion Rotating object at 60RPM"Just check if the servo will support your rotation speed requirements. Most random servos will be just shy of hitting 60RPMs, and those spec'ed to hit 60RPM might not quite make it with a load. Which is why I chose one that is spec'ed for…"
Crispin replied to James Printer's discussion Rotating object at 60RPM"Google continuous servo mod. Takes any servo, 5 minutes and you good up go. Also speed is controllable."
Michael Pursifull replied to James Printer's discussion Rotating object at 60RPM"If you want very high speeds or want to use a step down transmission, maybe. Adds significant costs, and most off the shelf option will be in the thousands or tens of thousands of rpms, not tens or hundreds, if you just grab some at random. "
James Printer replied to James Printer's discussion Rotating object at 60RPM"Is it sensible to look at ESC's?"
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