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

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21 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
75 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. ...
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1answer
29 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
70 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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16 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
55 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 ...
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1answer
92 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
69 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 ...
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1answer
109 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
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2answers
116 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 ...
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2answers
112 views

Can a Raspberry Pi control a servo motor?

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, ...
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2answers
216 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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47 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 ...
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0answers
70 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 ...
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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 ...
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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 ...
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1answer
93 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 ...
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2answers
102 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 ...
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2answers
53 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 ...
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2answers
227 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) ...
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1answer
57 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 ...
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2answers
61 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 ...
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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 ...
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68 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
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2answers
624 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 ...
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1answer
208 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. ...
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1answer
143 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 ...
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1answer
110 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 ...
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1answer
394 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 ...
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1answer
62 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
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2answers
364 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, ...
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2answers
151 views

Why is OCR1B values are not stored?

I have following program to control two servo motors: ...
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1answer
152 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 ...
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2answers
139 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 ...
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0answers
101 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
81 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 ...
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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 ...
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3answers
401 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
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2answers
114 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
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1answer
266 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 ...
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3answers
183 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 ...
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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 ...
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1answer
115 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 ...
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1answer
84 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
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1answer
77 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
817 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 ...
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1answer
168 views

Useless Machine geared motor

I am attempting to build a “Useless Machine” from scratch. Here is a video of the device: http://www.youtube.com/watch?v=Z86V_ICUCD4 . Also [if you want to], Google "The Most Useless Machine EVER! ...
6
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1answer
284 views

Weird servo mechanism

I want to use a servo taken by a radio-controlled car. However, I found out that wheels' rotation (front wheels) is not performed by a servo, but from a motor to move the wheels and a mechanism for ...
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2answers
107 views

How to control a servo

As servos use PWM and duration pulse determines the angle, the way to control a servo is via programming or an IC component is required?
2
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1answer
390 views

How do I get 5V for a Raspberry Pi from 4 D batteries?

I'm hoping to run a Raspberry Pi and a hobby servo off 4x1.5V D size Alkaline batteries. The batteries are brand new and at the moment I am measuring 6.5V from the 4 in series. I'm guessing each cell ...