A kind of motor with automatic feedback, such as a hobby RC servo.

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1answer
66 views

How to prevent servo startup jitter

I have a small Arduino Uno powered robot I'm entering in a competition, and it uses some small servos to position sensors and other actuators. According to the rules, it can't move until a ...
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0answers
38 views

Belt moving around [on hold]

I need a syringe to move about in a set loop. The 'map' for it to move on is very squiggly, and it needs to move a short distance precisely (to the nearest 0.1mm). How to I do this? Also, I will be ...
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1answer
43 views

Need a very low power, low force motor/actuator

What are some alternative types of motors/actuators that can be used instead of servos? I need some way of inducing a slight bit of motion/movement but with very little force and power consumption. ...
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28 views

Arduino Uno/Multiple Servos - Single Power Source

With full disclosure, I am a noob at this, so please be gentle as I have researched this across multiple boards and am frankly confused by the answers: Short Version: I have built an Iron Man Suit ...
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1answer
36 views

AVR's and DC Motors\Servos

I've been browsing around looking for some information on motors\servos and AVR's (my MCU of choice). Motors\servos are in my gray area, meaning I'm still not too into them, but I could do something ...
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1answer
32 views

position control mode of industrial servo motor

I have searched alot about industrial servo motors and their application but the problem is about the pulse command used in position control mode, can I use a 555 timer for the generation of such ...
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0answers
17 views

Precise rotational movement and locking [migrated]

I am constructing an autonomous, unmanned boat for voyages of several months. Traditional autopilots use a linear actuator to move the tiller but require several adjustments per minuted, will consume ...
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1answer
46 views

Most energy efficient and very small volume way to produce motion

I'm looking to make motion (may be 100g) using very small, and very energy efficient component, and prefereably very cheap, i've found some nano servomotors which satisfy my criteria, but i wonder if ...
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1answer
33 views

Can a linear motor output multiple and precise linear forces?

I am trying to identify a motor-driven system that can produce a constant linear force in one direction. The context for this is an injection device that compresses the plunger of a syringe ...
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0answers
4 views

Servo Buzz / millis() [migrated]

I am having a problem with Servo Buzz that I have ascertained is from the millis() function using too much time for Arduino to generate a steady pulse for the ...
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1answer
257 views

How to determine the rotation direction, rotation angle and rotation speed of a stepper motor and a servo motor

During one of my lab session I faced this problem and couldn't find any good answer. As far as I know for a stepper, Reversing the direction of current will change the direction of rotation. ...
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3answers
48 views

Is it possible to run 2 motors independently with USB?

Is it possible to run two motors independently in both directions with usb using no microcontroller but just some discrete components? I'm trying to create the cheapest possible robot that can just ...
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0answers
41 views

Custom servo motor for low power applications?

I'm trying to design a low-power device that is essentially just a heavy duty servo motor that is triggered on and off by an internet connected chip. This device needs to be very low power, running ...
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0answers
45 views

arduino brushless motor angular speed

I am using brushless DC motors for my project. I am controlling the motors via arduino through ESCs. I wanted to retrieve the rad/s speed of each motor. I use the arduino's Servo.h library to send ...
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0answers
37 views

Digital to Analog - Bluetooth from device screen to output old-fashioned Typewriter

I'm working on a hobby project converting an old-fashioned typewriter into an instantaneous printer(!) - basically, by allowing for a digital/virtual keyboard to be able to output to the typewriter ...
2
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2answers
102 views

What can be the reason for a voltage drop across daisy chained RS485 servo motors?

We are using a set of RS485 servo motors(Robotis EX-106) for our humanoid robot. This motor has a 4 pin connections namely Ground,VCC, D+ and D-. The Ground and Vcc terminals are from the power ...
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1answer
87 views

Is a 600+Hz R/C Servo/ESC refresh rate possible?

In the R/C multirotor scene, the trend at the moment is to have very high refresh rates on your ESCs (speed controllers). My understanding of how servos/ESCs are driven is a 1-2ms pulse is sent to ...
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1answer
87 views

RaspberryPi + TowardPro MG996R DIGI HI TORQUE +PWM

I am trying to control this servo from a RaspberryPi. https://skippy.org.uk/wp-content/uploads/MG996R_Tower-Pro.pdf I sort of figured out that a servo needs a specific pulse for a specific degree. ...
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4answers
151 views

How much weigh can a torque carry?

I have a servo motor with a torque of 10kgcm. My question is how much weight can it carry? I really don't understand "kgcm." Is there a way to calculate how much weight can a motor carry?
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1answer
137 views

Using a Arduino Pro Mini to power more than 2 servos

I don't know very much about Arduino, but from some basic research I have read that the Arduino Pro Mini can only support two servo motors. I am trying to create a set of reaction wheels using hard ...
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1answer
125 views

How do I detect servo stall with an Arduino?

I am controlling a standard 5-volt servo with an Arduino with PWM. My objective is to rotate the servo until it physically gets stalled (feels resistance) and then stop. Then I want the Arduino to ...
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2answers
86 views

Serial Servo Control using PIC

I am trying to make a serial servo controller using pic18f4550 microcontroller. following if the complete code that i've tried.. please note that i'm currently sending 8bit hex to control only one ...
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1answer
139 views

Control multiple servos using pic18f microcontroller?

I want multiple servos to be controlled through pic18f4550 microcontroller. I know for a single servo I can use the following code. ...
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2answers
100 views

Angular Acceleration: Understanding the differences between Gyroscopes and Accelerometers

I apologize for what is likely an ignorant question, but I am fairly new to electronics and have little confidence. I am working on a personal project where I am using a servo motor to move a rod back ...
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0answers
38 views

Adapt servo for torque input

I want cheap motors to reach a reference trajectory (positions, velocities, accelerations) and use torque as input for the system. This is intended for rapid movement reproduction. I would like to ...
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2answers
127 views

Why does my 24 volt DC servo motor run at 5 volt DC and not at 24 volt DC?

Why does my 24 volt DC servo motor move with 5 volt DC drawing 5 amps, but does not move with 24 volt DC? The power supply is 24 volt DC up to 10 amps. Datasheet are available for the DS4S servo ...
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1answer
100 views

Connecting multiple servos for a robotic arm

i am computer programmer and its 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 ...
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2answers
88 views

What factors can determine the constant coefficient when calculating torque?

In this servo motor's datasheet, both motor have the same torque of 0.32 Nm, have the same power of 100w, but have different rated currents and voltages. It seems that the "torque" relates to the ...
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0answers
101 views

24VDC servo motor does not start

I have a 24VDC servo motor (servo motor specs) I want to use to move a small linear stage. The servo output is 20,6W. It requires 5000steps per revolution. I have the motor connected to a servo ...
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5answers
316 views

Can a motor's movement be improved to any arbitrary resolution?

For a project that I'm working on, I need motor rotation at extremely small increments -- my desired resolution is about ~0.15 degrees per minimum rotation step. Of course, most motors of reasonably ...
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1answer
105 views

Voltage drop when servo activates

Background This is a follow up to an earlier question I asked - I have an ATmega2560 running a number of sensors and servos. There are two separate SMPSs running off a single 12V battery, one ...
3
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2answers
266 views

Powering multiple devices from a single power supply

I am learning electronics on my own and have been having a lot of fun. I am currently working on creating a Nerf sentry gun for fun with my son. I am at a point there where I need to power multiple ...
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1answer
101 views

How can I use 15 servos with arduino mega2560 without stepping down voltage?

How can I use 15 servos with arduino mega2560 without stepping down voltage? because I want to control 15 servos by one board (arduino mega 2560).
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2answers
101 views

Are large electrolytic capacitors necessary in a servo system that doesn't need to be precise

I have two servos in an autonomous sail boat. One controls the rudder, the other the winch. I try to use both sparingly to minimize power consumption, and so I disconnect each unused servo through an ...
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1answer
103 views

Where can I find used servo/stepper motors? [closed]

For practicing purposes (Arduino and other controllers), from what old equipements can i recover (recycle) small servo/stepper motors? Maybe old printers...?
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1answer
50 views

Does a modified “continuous rotation” servo typically create an H-bridge motor controller?

A common technique for driving small hobbyist robots is to make a "continuous rotation" servo by replacing the feedback potentiometer with two resistors of equal value. Does this modification ...
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0answers
37 views

How to create (static?) electricity? [duplicate]

First off, sorry if this isn't the right place for this, but I am hoping electrical engineering is the right direction with this.. Long story short, I have a servo motor connected to an arduino board ...
2
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1answer
163 views

How can I find and remove servo/motor noise from this audio amplifier?

I am troubleshooting an audio noise problem in project which has several components wired together as follows: Overview: The overall project does some motion control with a servo and has an audio ...
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2answers
131 views

Servo does not stop in a stable position

I am currently playing with the HS-485HB servo, and I noticed that very frequently the servo will not stop in a "rest" position after it stops moving, even when external forces applied to it are tiny. ...
2
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1answer
50 views

PWM or switch port programmatically for Servo

Is there a huge difference between using a PWM and switching a port through a program (like using switch) for operating Servos? For smooth movement is PWM necessary or switching using a program will ...
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2answers
127 views

How do you power 6 servos

I have 6 MG996 series servomotors. A single motor can be controlled by an Arduino board using a 5V power supply. Some specifications Running Current 500mA - 900mA @ 6V Stall Current 2.5A @ 6V ...
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0answers
48 views

Op Amp Servo Loop Auxiliary Amplifier

I'm planning to build a op amp servo loop for op amp measurement. (see http://www.analog.com/library/analogdialogue/archives/45-04/op_amp_measurements.html) Does anybody have experience with the ...
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1answer
123 views

What servo-motor (torque, power) is you think needed to rotate shower faucet? [closed]

Also how do you think you could create electronically controlled faucet? I know that there exists magnetic valves, but they consume power all the time they operate, whereas I want a solution that ...
0
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1answer
136 views

Low-cost Up-Down Servo solution

I have a small project and I'm interested "upgrading" to a more produce-efficient design. Please note I'm no electrical engineer. I want to move a small servo (like this one ...
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1answer
152 views

How do I replace an existing servo with a geared DC motor?

I am a complete beginner, just getting into the world of electronics, in particular robotics. I have found a really nice open source set up that I want to build on and change for my own ends. The ...
4
votes
1answer
575 views

Drive a 4.8V servo signal line using 3.3V

I have a servo with an operating voltage of 4.8V. I want to drive the servo from a MCU running on 3.3V. I haven't tried it yet, but was wondering if I needed to drive the signal line to 4.8V using a ...
4
votes
2answers
254 views

Electronic Speed Control Concepts

I am a programmer who has never worked with electronics before. I am learning the concepts and hoping to build a quadcopter, with the control software entirely written by me. Motor control seems to be ...
0
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2answers
221 views

Can a Raspberry Pi control a servo motor? [closed]

Can a Raspberry Pi (RPi) board can control a 10Amp servo motor ? I read on the Internet that a RPi could control small servo motors. If so, is there an add-on board that, when connected to the Pi, ...
2
votes
2answers
499 views

Control servo motor via PID to stabilize a robot wheel using IMU

I'm trying to stabilize a robot with a servo motor attached to two wheels of a robot. I already built the system as following: Apply Kalman filter to gyrometer/accelerometer output Calculate a roll ...
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0answers
104 views

How to connect SINAMICS V60 driver to RaspberryPi

I have a Siemens motor with SINAMICS V60 driver (10A). Here is the Getting Started Manual (28MB PDF) . I want to connect this driver to the GPIOs of my raspberry Pi board. The purpose is to control ...