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

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1answer
42 views

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

For practicing purposes (Arduino and other controllers), any ideas where I can recover used small servo/stepper motors from old devices? Maybe old printers...?
0
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1answer
26 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 ...
-4
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0answers
28 views

How to drive ten sevos with an Arduino Due board [on hold]

I want to drive ten servos with an Arduino Due board. Can you guys help me with the code? It should: Ask to enter ten values ranging from 0-180 and 3 bits per servo. Save the value of all ten ...
0
votes
0answers
34 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
votes
1answer
50 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 ...
1
vote
2answers
77 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
votes
1answer
32 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 ...
0
votes
2answers
75 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 ...
0
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0answers
20 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 ...
0
votes
1answer
63 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
votes
1answer
96 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 ...
1
vote
1answer
80 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 ...
2
votes
1answer
128 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
125 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
votes
2answers
138 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
244 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 ...
0
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0answers
54 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 ...
0
votes
0answers
75 views

Generating a Trapezoidal Motion Profile

I'm working on a project which involves the use of a servo motor to pull an object along a track. The servo motor will have a quadrature encoder to calculate the position. I'll probably implement this ...
1
vote
1answer
103 views

Can a Solenoid be driven from one of the pins of a Servo controller?

Would it be possible to operate a solenoid (e.g. this Plastic Water Solenoid Valve - 12V - 1/2" Nominal, suggested for use with "a TIP120 or N-Channel power FET with a 1N4001 kickback diode to drive ...
0
votes
1answer
65 views

Turning off servos with a MOSFET

I'm trying to limit power used by servos. The application is such that I don't mind if the servo's position drifts a bit, so I just use an N-MOSFET to shut it off when not in use. A conversation on an ...
0
votes
1answer
95 views

Servo doesn't move when driven by a PIC micro controller [duplicate]

I have a PIC12F629 and a servo sg5010(for which I could not found any datasheet ) So I built this circuit : simulate this circuit – Schematic created using CircuitLab The LED is for ...
-1
votes
2answers
105 views

Servo connected to PIC does not work

I have a PIC 12F629 and I connected it to my servo (TowerPro sg5010 motor) per these details: PIC pin 1 to positive pin 8 to negative pin 2 to servo red wire (signal) servo brown wire to negative ...
0
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2answers
54 views

Considerations for a motor resisting a human grip

I'm trying to replicate this project at home, wherein strings attached to fingers and pulled by servos are used (instead of difficult pneumatics) to simulate an object in a glove as a version of ...
4
votes
2answers
280 views

How can the Arduino Uno support up to 12 servos if it only has 6 digital PWM pins?

According to this: The Servo library supports up to 12 motors on most Arduino boards and 48 on the Arduino Mega. On boards other than the Mega, use of the library disables analogWrite() (PWM) ...
1
vote
1answer
58 views

Step response of high-powered servo motor

I'm involved with a project that will need a servo motor to generate a high torque and a high speed in a short amount of time. Using typical speed/torque graphs and taking into account a certain gear ...
0
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2answers
65 views

Button cells for arduino uno

OK, before I start I know that there is significant difference and that the Arduino Uno is not designed to run off button cell batteries especially to run both the ...
0
votes
0answers
15 views

How do I connect my AKM Servo Motor through the Kollmorgan WorkBench?

I have an AKM21C servo motor from NI, connected to a AKD P00306 drive, which is connected to a UMI-7774 board. And I'm trying to connect it through Kollmorgen Workbench, but it doesn't detect a ...
0
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0answers
75 views

VirtualWire and ServoTimer2 on an Arduino Mega

I faced some problem in using VirtualWire and ServoTimer2 on a same Arduino Board. The RF module on the board work well, but the servo did not execute its operation as stated. Anyone had solution on ...
2
votes
2answers
627 views

Will a large capacitor damage a circuit

I have 32 servos running from a 7.5V battery rated at 2500mAh and I'm sure that it has enough power to handle the servos, but it doesn't look like it can handle all of the servos pushing at once. I ...
0
votes
1answer
259 views

How to power servos externally in Arduino

I tried to control 2 servos with my arduino. It worked fine but if I try to control 5 servos with my Arduino, it doesn't work. I want to power up the servos externally but I don't know how to do it. ...
0
votes
1answer
145 views

Will motors cause more noise when connected to a ground plane instead of directly to batteries?

I am making a small robot using an Arduino and two servo motors. There are two ways that I can provide power to the motors: 1) Run power and GND wires from the battery holder to the motors, then ...
0
votes
1answer
112 views

Control a servo motor

I'm learning to control a servo (SG90), I read at this tut: http://www.seattlerobotics.org/guide/servos.html "The servo expects to see a pulse every 20 milliseconds (.02 seconds). The length of the ...
0
votes
1answer
447 views

Safely driving a SG90 servo with AVR PWM

I've read that servos tend to draw anywhere from 10mA to 200mA. Is there a standard configuration to drive servos using MCUs without directly connecting them to the output pins of the controller? Or ...
1
vote
1answer
64 views

Do servo motor specifications take into account the gear ratio inside?

I know this question may not belong here but I assume this is most likely where the most well informed people can help me. I am looking at buying a servo motor for a an application that must be able ...
2
votes
2answers
397 views

How many servos can I run on an ATtiny85?

This is my first time asking a question on this website, so please correct me if I'm doing something wrong... I have been working on a small project which runs three Servo motors on an ATtiny85, ...
0
votes
2answers
154 views

Why is OCR1B values are not stored?

I have following program to control two servo motors: ...
0
votes
1answer
174 views

How to increment OCR1A value in ATmega16 through hardware?

For my project I am controlling servo motors through ATmega16 micro controller. The OCR1A determines the position of motor. I want to increment the OCR1A value through a hardware switch. I tried ...
2
votes
2answers
150 views

limiting servo current consumption

The tl;dr version of my question is - how can I trade off ability to hold an exact position for current draw. The full version - I've got a battery-powered system with a servo. the servo is ...
0
votes
0answers
108 views

Need Help in creating a driver for a 220v AC Servo Motor

I am a new to electronics and have been working on to design a Motor Drive for comonly available Serveo motors like: http://www.alibaba.com/product-gs/1580332915/servo_motor_used_in_CNC_machine.html ...
3
votes
1answer
82 views

How can I determine if a servo motor is in the commanded position?

Once I have set PWM to move a servo to a particular angle, is there a way to detect that the servo has finished moving? I am concerned about situations where the servo is encountering extra ...
0
votes
0answers
74 views

Measuring 0.9V across circuit when switch is open

I have a basic circuit which is basically 4 servos connected to a 6vdc battery, and their signal is controlled by an Arduino. However, I noticed that I could measure around 0.8-0.9V across the power ...
0
votes
3answers
408 views

How does a servo hold its position without drawing too much current?

In a standard DC motor if you supply a voltage and stop it from rotating i.e. applying a heavy load, it will draw a lot of current. How is this not the case with a Servo? How does it hold its position ...
2
votes
2answers
122 views

How to select the correct DC servo motor

I have to buy DC servo motors for a project. The problem is, I dunno how I'm supposed to pick the correct one. I'm going through the datasheets from different companies, and the models they sell are ...
2
votes
1answer
274 views

Servomotor takes too much power so the µController (ATMEGA328P-PU) resets all the time

I have got the following circuit diagram. For a little explanation. When the button is pressed the µC is powered for about 10 sec. The µC contains code that moves the servo. When the servo is ...
1
vote
3answers
200 views

RC Servo motor power supply

In my RC servo motor datasheet the shall current is 600 mA. My Arduino cannot supply that much of current so, I decided to use an DC adapter to supply the power and arduino to control the Servo. My ...
1
vote
1answer
1k views

Problem with arduino servo

This is my first attempt to work with a servo and I'm using this tutorial. I have a "TowardPro MG996R DIGI HI TORQUE" servo directly connected to my arduino uno as follows: I also created the ...
-1
votes
1answer
119 views

Holding voltage high, for monostable 555 timer pulse

First I'll mention I am an amatuer in electronics and therefore I ask for easy to implement answers. Thanks. Straight forward to my question: I want to know if there is a simple (and cheap) way to ...
1
vote
1answer
85 views

How can I isolate a servo in this circuit [closed]

I have a PIC which I am using to control a servo, I have a 5v supply for the PIC. I wish to isolate the servo from the PIC as the noise the servo creates can cause the PIC to malfunction. NOTE: I only ...
1
vote
1answer
78 views

Driving a Servo a Motor

I want to drive a servo rc motor I just purchased, I am a newbie in the electronics world. I would just like to test out the servo motor first and actually get it to move. So far I have figured out ...
2
votes
3answers
1k views

What is the difference between stepper motors and servomotors?

I am not sure I understand what the difference between a stepper motor and a servomotor is. Could someone explain this to me? Also how do these motors behave when they are paused or turned off, do ...