Questions tagged [otherservos]
The otherservos tag should only be used for questions which do not fall into the servomotor or rcservo (hobbyservo) tags.
33
questions
2
votes
1
answer
133
views
I've got a few servo motor questions
How can I measure the amount of voltage I'm giving a servo motor? How can I give a servo motor the correct amount of power it needs to run at it's full potential? Say I had this motor:
ANNIMOS 60KG ...
- 21
1
vote
1
answer
573
views
Control a servo (two position 180-degree swing) with an On/Off switch without microcontrollers [closed]
For my application, I need to be able to control a servo with a simple on/off switch. When it's off (pulled LOW), I need to servo to go at -90 degrees and stay there - possibly for a prolonged time. ...
0
votes
1
answer
65
views
Double/Triple inverted pendulum always on a cart?
All of the examples of keeping a double/triple inverted pendulum balanced using a PID controller I've seen seem to be on a cart. Like this one https://www.youtube.com/watch?v=cyN-CRNrb3E
How come the ...
- 553
1
vote
2
answers
209
views
Applying MoCap data to real life robot
I have a Kinect Sensor, and iPi software I use to create motion capture data to use in film editing. I am looking at creating a small, Raspberry Pi driven bipedal robot just for fun, and I was ...
- 101
3
votes
2
answers
2k
views
What is the best way to attach a 3D printed part to a servo for robotics use?
I am trying to make custom parts that fit directly onto a servo. Doing this has proved more difficult than I've expected so far.
I was hoping to avoid incorporating the provided servo horns into the ...
- 33
2
votes
1
answer
243
views
Using SLAM to create 2D topography
I have a small mobile robot with a LidarLite laser range finder attached to a servo. As of now I have the range finder side-sweeping in a 30 degree arc, taking continuous distance readings to the side ...
- 123
5
votes
2
answers
2k
views
Why can't you buy continuous servos with absolute positioning?
I've been looking at parts for a beginners robotics kit (I teach at a museum) and have been wondering about servos.
You can buy continuous servos with relative position encoders. But I can't find ...
- 51
2
votes
2
answers
318
views
How can I tell if a servo motor is capable of being controlled degree by degree?
I want to create a rotating control mechanism that can turn a surface to face any direction in a sphere. My dad (an electrical engineer) said I can probably do it by connecting two servo motors ...
- 21
2
votes
1
answer
6k
views
Type of servo and torque calculation required for a 2axis robot arm
I am trying to build a 2-axis robot arm with pan and tilt mechanism. The gripper/holder will hold an object weighing 300 grams. The total weight of the arm including the motors will be around 2 kg. I ...
- 21
1
vote
1
answer
545
views
Driving a non-circular timing belt
I'd like to create a camera slider similar to this one.
The only part I'm not sure on is how to setup the camera drive. It looks like I can buy a similar timing belt here, but I'm not sure how to ...
- 113
2
votes
1
answer
6k
views
Design and construction of universal robotic arm (5kg, 1m)
i am working on my master's thesis about design and construction of universal robotic arm.
Goal of my work is to design 5 DOF robotic arm. Something like on the picture:
I need it to be able to ...
- 21
6
votes
2
answers
4k
views
What type of servos are used in industrial robot arms like Universal Robot UR5?
I've noticed that the industrial robot arms have very smooth, fast, and strong movement. Does anyone know what type of servos they use. I'm trying to build my own and don't want to have the jerky ...
- 163
3
votes
1
answer
909
views
Battery system for a robot with a RaspberryPi or microcontroller
I'm building a robot which is actually a rotating ball. All my circuitry will be inside this ball. I'm using a Raspberry Pi as the brains. Apart from Raspberry Pi, I've an H-bridge IC (L298N), a 6-...
- 31
0
votes
1
answer
314
views
beaglebone black power supply for hexapod [duplicate]
I am trying to build a hexapod with camera interfacing using a beaglebone black for college project. I'm not sure what power supply to give so it can power up to bot, having in mind that it should be ...
1
vote
1
answer
1k
views
Connecting multiple servos to a robotic arm
I am computer programmer and it's really been long since I have done electronics. I need help on connecting my servos to an Arduino to power my robotic arm. This is the robotic arm that I am trying to ...
- 111
1
vote
1
answer
83
views
Where do roboticists look for used sensors/hardware? [closed]
I recently built a self-driving vehicle-type robot for a competition, and am looking to sell sensors (GPS, INS, etc.) used in order to have money for the next project. Is ebay where people tend to go ...
1
vote
1
answer
654
views
Servo controlled valve
I am trying to build a servo-controlled water valve. Max pressure 150 psi , valve size 1/2".
Can anyone recommend a suitable 1/4-turn valve, either ceramic, ball valve, or anything else that is easy ...
- 113
1
vote
0
answers
197
views
Raspberry Pi finer servo control
I'm usig RPI and Servoblaster to control servos. I've set the --step-size to 2 us, but I'd like to decrease it to 1us. I've tried to set the ...
- 41
7
votes
1
answer
3k
views
Unwanted Arduino reconnect: Servo + Arduino + Python (Raspberry Pi)
I am having difficulty sustaining a connection between my Raspberry Pi (Model B running Raspbian) and my Arduino (Uno) while sending signals from the Raspberry Pi to a continuously rotating servo (...
- 73
6
votes
1
answer
249
views
Field oriented control of brushless motors
If I was controlling a normal brushed motor as a servo, I would measure the motor's position, and adjust the PWM signal to control the voltage. This way I could achieve a precise velocity/position ...
- 6,457
1
vote
0
answers
916
views
Making a brushless servo using Hall sensors
I'd like to assemble a prototype of brushless servo system using a RC brushless motor (heavily geared down), a sensored Electronic Speed Controller for RC motors, and a microcontroller to do the PID ...
- 6,457
3
votes
1
answer
861
views
Digital servo shaking
i need your advice if someone experienced something similar. I try using digital servo but when i tried to connect it to board by this tutorial https://blogs.oracle.com/hinkmond/entry/...
- 31
12
votes
2
answers
2k
views
Smooth servo movement for a crawling robot
I made a small crawler robot a little while ago that had two legs with two degrees of freedom each, so 4 RC servos total. While I was programming the movement of the legs I noticed that they moved ...
- 2,142
5
votes
3
answers
111
views
Single power source for electronics and actuators
It seems popular to build robotic systems with separate supplies for the electronics and motors/servos, but what would be involved in a circuit that powers both from one source?
If it helps, here is ...
- 161
1
vote
0
answers
383
views
Pan and tilt bracket for a stepper motor [closed]
Currently, I'm using a pan tilt bracket that works with the servos I have (spark fun product 9065), and are generic to all servos. However, servos aren't accurate enough. I'm looking at other options, ...
- 111
11
votes
3
answers
31k
views
What are the signs that a servo might be broken?
I just got a kit and im not sure if its me or not but it appears one of the continuous servos might be broken. What happened first when I plugged it into the microcontroller, it made a humming sound ...
- 273
9
votes
3
answers
415
views
What is the actual physical actuated quantity when controlling the position of a servo?
I'm trying to learn about servo control. I have seen that the most generic position control method for servos is PID, where the control input is position error. However, I am not sure about what is ...
- 390
15
votes
3
answers
6k
views
How is PIV control performed?
I'm considering experimenting with PIV control instead of PID control. Contrary to PID, PIV control has very little explanation on the internet and literature. There is almost a single source of ...
- 390
8
votes
5
answers
5k
views
Building a controllable "knob"
I am trying to build a semi-analog timer. Something like those old egg timers that you rotate the face of. I want a knob that I can turn that can be read by a microcontroller, and I also want the ...
- 183
8
votes
2
answers
1k
views
Getting started with robotic arm design
I would like to design a robotic arm to hold a weight X at length Y (in my case I want to hold X=2.5 lbs at Y = 4 inches). Starting out simply, I would like try building an arm with a gripper plus one ...
- 141
4
votes
2
answers
1k
views
Low-cost servo with digital control interfaces? [closed]
Some years ago, there where some projects that provided hardware and software to perform modifications on standard hobby servos to convert them to digital servos, with all the advantages that come ...
- 3,034
6
votes
2
answers
5k
views
Mechanical design for motorized spherical caster wheels
Design goal is to have a mobile robot that operates on 3 large casters, essentially 2 to 4 inch diameter steel ball bearings, that are motorized. No other mechanism would touch the surface. The robot ...
- 464
8
votes
2
answers
844
views
Adding external heat sinking to a Dynamixel RX-24F servo?
Hobby servos are generally not sufficient for real robotics for a number of reasons: Quality, precision, range of motion, torque, etc.
Meanwhile, industrial servos, such as ABB, Emerson, GE, etc, are ...
- 720