Questions tagged [servo]

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

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How can I power my nine SG90 servos along side an Arduino?

I'm working on a project right now. I need to power nine servos and two DC motors along side an Arduino Uno R3 at the same time with a 7 volt lithium ion battery pack. I am confused about the power ...
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How does a system measure the speed of a servo motor using brushes on the commutator?

I have a servo motor with 4 brushes on its commutator. The motor is connected to a controller that enables the user to control the speed and at the same time it has an analog RPM meter which most ...
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Can high amperes damage servo motor? [duplicate]

I have 5 servo motor Futaba s3003 and DC Adapter 6V - 2A, I'm asking if I used this adapter on these servos will be okay or not? single servo stall current around 250mA not sure and 8mA/idle
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What is the suitable battery to power 5 servos?

I have 5 servo motor types of Futaba s3003, I want to run them simultaneously so I'm asking what is the right battery should i use? according to the datasheet: https://www.es.co.th/schemetic/pdf/et-...
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Momentary switch to activate 555 timer

I am very new to circuits and I've tried everything online but nothing seems to be working. I am making this circuit for a class. I am trying to emulate this circuit diagram from this youtube video ...
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Servo motor long connection wire

I'm working on a mechanical device that uses three DSM44 servos, two FEETECH Mini Servo FT1117M, one JX PDI-6208MG Metal Gear Digital Servo, and one DS04-NFC 360 Degree Continuous Rotation Micro ...
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Panasonic AC Servo Motor – Significance of Different Voltage Specs

The Panasonic MSMF012L1S2 is specified as a 200V AC servo motor. The nameplate rating is 3ΦAC 68V (wye config). What is the significance of these different voltage values and how do they relate to ...
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How do I calculate the maximum amount of current a battery can supply?

I have a few of these rechargeable batteries: http://w3.cebeo.eu/pdf_nl/4045126.pdf I'm wondering what the maximum current this can supply is as I'm looking to connect 4 of these to power 3 servos ...
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How do I calculate required voltage and current for multiple servos?

I'm looking to power 3 servos and control them with an Arduino Uno. Could someone please explain to me, not just specifically for this, how I can work out how much voltage and current I need to power ...
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Best way to provide 5V at a high current to power 12+ servos using battery power

I am currently in the process of building a quadruped robot that uses 12 SG90 servos, controlled by a PCA9685, for motion. I've found many examples of quadrupeds, but barely any mention of their power ...
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Can i use ESP32 3.3V pwm on MG90D Servo

Ok so, im building the eletronical part of a sumo robot for my university team, and i came to a barrier, on past researchs we came to the conclusion that using MG90D servo is the best option for us (...
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How to do sound localisation for an Inmoov Robot

I have to do sound localisation for a humanoid robot. This is my final year project given by our sir but I have no idea how to do it can anyone help me
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how do i increase torque of leadshine ES-DH2306 servo motor (hybrid motor)?

i am using leadshine ES-DH2306 servo motor it is also called as hybrid motor. the torque of this motor is 20Nm. but when we are giving the load around 7 Nm it is failing.it is giving lots of jerke. ...
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Interface 8 servo-motors with Raspberry Pi Compute Module 4 (without additional micro-controller)

I am using a Raspberry Pi Compute Module 4 as my primary processor on a control machine. I have to interface 8 servo-motors with possible RPM feedback. I do not wish to use an additional micro-...
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Operate servo based on AC voltage: solenoid replacement

In short, I’m trying to find a substitute for a solenoid in a system that was operating based on 120V. The servo needs to rotate a little shaft about 45 degrees when the voltage comes on, and then ...
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Will a servo be damaged if power is applied, but the PWM signal is low for a longer time than the servo refresh period?

I have a question about servo control (PWM) signal. I want to use one PWM pin to control two servo motors through a 1:2 MUX. That means that depending on which servo position I want to correct, the ...
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Correct motor type to use to open a small "hatch"

Using an atmel microprocessor (attiny2313) to make a "simon says" game for my dog (yep, for a treat). I have all the game play programmed and starting to look at the hardware required to ...
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Nano and 3.3V Pro Mini Moves Servo Differently

I have a servo which ı want to sweep from 0 to 180 degrees with 25ms delays. The servo is making a door move linearly. Because of that, I can observe how much did the servo actually turn. When I use ...
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Haptic feedback from DC motor

I want to make a simple lever connected to a DC motor pressing down on surfaces with different rigidities. I will control the lever up and down to the same position while observing the torque (or ...
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First attempt at a circuit design for Raspberry Pi

The last time I did any electronic design myself was about 12 years ago, I'm hoping to turn this schematic into a PCB and solder it all up eventually but I am so out of my depth trying to relearn this ...
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Can a servo be controlled (requiring other circuitry) by two binary input pins?

I am working on a project where I would like to control the position of a servo without a normal input, e.g potentiometer. The servo would be constantly powered on the red wire as required, and then I ...
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PCA9685 PWM with servo 8.4 V

I want to drive in Raspberry Pi this servo with max power to get max torque available, 8.4 V with 4.5 A, but I haven't found any PWM servo driver I2C interface which can stand the 8.4 V. The pca9685 ...
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Servo motor rotating without a PWM

I have seen a circuit that lets a 1171 mg servo servo rotates freely a 360 degree without providing it a PWM signal; however, a DC voltage only is that possible? How can I do that?
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Servos flailing

I added a 9g RC servo to my 3D printer for tool change purposes. It actuates a latch that locks the parking extruder in place. You can see the servo in action in this video at around 30 seconds: https:...
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Using servo motors without PWM

I’m new to the ATmega32 and I want to connect 4 servo motors to a single Atmega32 chip without using PWM pins. Is this possible? If so, how can I do that?
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What does this mean in the datasheet for PWM motor control?

My aim is to control a DC servo motor through PWM. It has a motor controller attached to it that takes in some DC source and PWM for controlling the motors. I programmed/used a myRio (MCU) to produce ...
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Servo creates a constant "angle error" depending on its original position

I am trying to set a servo to move to the same angle always when given the same PWM signal. I am using a Savox SH-0262MG. I have an issue when I first move it manually (with my hand) to one of its &...
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103 views

What servos are in hard drive write head? How are they so accurate yet so fast?

I just saw this demonstration of a hard drive seeking online. It made me wonder what type of servo motors are used to move the write heads, and how do they move so fast, yet are accurate enough to ...
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102 views

Servo shutoff using a MOSFET

I am trying to design a circuit to cut the power to a servo to prevent the servo from overheating on the occasional circumstance that it stalls. The servo can draw almost 4A at 7.5V on stalling and ...
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Can a low side L-spike destroy a turned off microcontroller through its ground pin?

I am working on a low power project involving servo motors and an STM32 Bluepill MCU board and I was wondering if it was necessary to place a free-wheeling diode as shown in the schematic below (D1). ...
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Servo abnormal behavior with continuous cyclic PWM signal

One of my TowerPro MG946R digital servos is faulty in a way I haven't seen before: if it receives continuous PWM signal that cyclically performs clockwise and counterclockwise movements, after a while ...
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Switch LEDs with Servo control signal / PWM

I have a RC receiver that produces a PWM signal for hobby servos (specs below). I would like to control some LED lighting with it. What are my options? I obviously do care about weight, like I do ...
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Power a servo momentarily using a capacitor for geocaching

I'm trying to build a cache for geocaching based on a movie - The Boy Who Harnessed the Wind Those who don't know what geocaching is, please visit here. It is a fun activity. I have this idea for a ...
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is it possible to make cnc without embedded motion controller over CANopen [duplicate]

I want to make CNC software. while doing this, I do not want to use any motion controller, PLC, FPGA, etc... I use three items. 1-USB to CAN converter, 2-servo motors, and their drivers, 3-a computer. ...
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3 answers
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Can a computer control up to 10 motor drivers directly via the CANopen communication protocol? [closed]

I guess my question was not so clear, so I am editing now. I want to make CNC software. while doing this, I do not want to use any motion controller, PLC, FPGA, etc... I use three items. 1-USB to CAN ...
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3 answers
261 views

Can I run a solar tracker with 10W panel with 2 MG946R servo motors?

Is it possible to run a solar tracker with 10W panel that connects to a 5V buck converter and 2 MG946R servo motors without battery and under a clear and sunny day? MG946R , stall current 1.2A 5 buck ...
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PWM controller for a servo coil (flow valve)

I am designing a PWM controller for a butterfly type flow valve operated by a servo. I have some information for the servo like input signal range (0-100mA), servo coil resistance (75 Ohm) and ...
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1 answer
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Solar tracking using a helicopter blade control [closed]

I've been trying to build a dual-axis solar tracker but the ones I saw needed linear actuators. I'm thinking how about using SG100 servos with the concept of blade control in helicopters to build the ...
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1 vote
1 answer
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Should I use servos or stepper motors in a homebrew plotter?

I'm making a plotter for drawing pcb designs on copper clad board. I'm planning on using rails from a 3D printer for the 2D drawing plane and smaller vertical rails to raise and lower one of 4 pen ...
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Using servo motor as load to induction motor

I have an application where I have a 3hp induction motor that spins at 1755 rpm (1800rpm is the synchronous speed). A servo-motor is connected to the shaft of the induction motor, and is supposed to ...
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1 answer
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Can servos be powered in series?

Can two 6V servos be connected in series to a 12V source, or do servos behave differently than regular motors when it comes to voltage?
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240v 1ph Servo Drive with output to 3ph 380v?

Do these exist? Iv only seen ones where i/o is either 240v or 380v. So can a 240v in & out servo drive work to any extent if its driving a 3ph 380v PMSM motor, if so what and Im interested in the ...
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Failed LM7806 driving servo testing

I'm doing some starter circuit design and assembly. I used a linear voltage regulator to provide 6V to an RC servo, which is nominally 6V driven. This was done on a PCB using a mix of SMT and hand ...
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Arduino halting when working with servos

I am currently working with a servo and an external power source. I am using an Arduino Nano Every. The external power source is 7 volts so I used a buck converter to convert it to 5 volts before ...
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Use closed loop torque control based on motor position to simulate a dynamic load

The goal is to use servo + gearbox to simulate a screwing process millions of times. A screwing process is characterized by a low torque at first (the screw enters the material) and once the screw ...
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MG996R that can rotate all the way around, but behaves like a normal servo

So I bought an MG996r online to replace a dead one in my robot dog, and I always test my new servos by hand and then by using sweep. When testing this one by hand, I found that I could turn it all the ...
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Using linear and switching regulators in parallel for servos and microcontroller

I'm just wanting to confirm that this circuit would be safe/reliable to implement. I'm hoping to run two servos - one 6V one 7.4V - in parallel with an ESP32 dev board with built-in linear regulator, ...
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How do I calculate how much power a servo consumes for specific degrees of turns?

I have an FS5103B servo with a stall current of 780mA at 4.8V. So say I am calculating power for the stall current as P=UI^2, I get 2.92W. What does that mean, like is it for a one-degree turn or does ...
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235 views

Using the UBT-12HC Serial Bus Motor with Arduino

I recently bought this motor and am trying to figure out how to use it. I also need a driver as this Bus Servo uses omnidirectional Serial communication. That is why I also bought this TTL board. I, ...
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Power supply of 5V 1A causing erratic behavior of Tower Pro SG90,- what's the reason for this? Also occurs when using the MB102

I need to power an SG90 servo but am having trouble with erratic behavior when using a phone USB charger of 5V 1A or when trying to use the MB102. The MB102 voltage regulator also overheats within a ...
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