Questions tagged [servo]

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

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16 views

Question about HS-1100WP [on hold]

Are the HS-1100WP Servo any good? I have only seen a couple of videos about them they calmed they are excellent. I plan on using them in a Zero turn Mower. Does anyone know anything about them? Thanks
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1answer
48 views

Help needed to select proper electric motor for constant drive

I need about 180 degree movement, back and forth in about one second. Maximum torque is about 2.2 kg ⋅ cm. I have tried RC-servos (up to 20 kg ⋅ cm), but they all burn within first 12h (maximum drive ...
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2answers
61 views

Check the position on analog servo [on hold]

In analog servo, how to set the position with hands then check the position in raspberry pi,yes i know potentiometer can do that but i want with servo motor. Now, i can increase decrease the speed of ...
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3answers
121 views

what is difference between servos & servo motors?

I am studying about basic of motors and i came across two terms Is there any difference between two terms servos and servo motors? or they both exactly same??
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41 views

Does an ac servo motor experience high “inrush current” every time it moves after initial power up

we are currently building a motion platform for an airplane simulator and the linear motion actuators will be driven by 6 servo motors of type: Syntron 3KW AC 380V 130HMB-30100. The datasheet says ...
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33 views

Brushless DC Control

I'm controlling a brushless motor using a raspberry pi. I use servo pulsess to control my motor. But i also need to turn it in the reverse direction. To do that, I have no idea what to do. Some say ...
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1answer
45 views

Can servos have a true neutral gear?

I am developing a mechanical arm that can be pitched remotely at a certain angle using a high-torque servo motor. The servo needs to keep the arm at a precise position for any give amount of time and, ...
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1answer
62 views

Scaling level of PWM signals

I am going to scale PWM 24V generated by PLC to PWM +5V by means of optocoupler TLP521 and MOSFET BSP295 in order to control a micro servo motor (MG90S). What I have tried till now is the below ...
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1answer
47 views

servo control using a microcontroller and separate power supplies

I'm trying to get a very basic servo control circuit to work using an Arduino and can't figure out where I'm going wrong. I've got separate 5V power supplies for the microcontroller and the servo, ...
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2answers
55 views

Is it possible to 'upgrade' a 5V-RC-servo for higher voltages? [closed]

I built a robot using these servos. Since the robot is quite heavy, the motors need more current than my power supply is capable to deliver (around 3.5A peak). One solution would be to upgrade the ...
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76 views

Trying to Build a Servomotor Tester

I tried to build a very simple servomotor tester. I am using astable mode with a potentiometer and resistor on a NE555 to generate a 20 ms period. It has a correct frequency on the output between 50....
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65 views

ATMega328P control servo motor speed with potentiometer

I'm trying to develop an application in atmel studio 7.0 which will allow me to control the speed of my servo motor with my potentiometer. Now, the problem is that I don't really know how to do that? ...
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3answers
76 views

Properly powering a servo motor with external power

I was able to run a servo motor a few times with the following circuit: Green Chip - lm2596 voltage regulator - used to drop the 12v from the power supply to around 5.4V to power the motor. Power - ...
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3answers
71 views

How is this servo amplifier made work in SPICE?

At page 13 of this Analog Devices document there is a circuit which consists of a servo amplifier and a bridge. The operation principle is explained in the document. Here is the the schematics given: ...
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1answer
25 views

How to avoid lag of servo motor used with distance sensor in FRDM-KL25Z

I am having trouble with using distance sensor and servo motor at the same time. My project is a radar project. I have a servo motor sweeping around and on top of it I have distance sensor. When I ...
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1answer
52 views

AC servo ASDA-B2 modbus position control

I have a very specific question on ASDA-B2 servo driver and I hope there is someone who has hands on experience with it who can help me out. I have referred to this user manual and it is not very ...
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2answers
84 views

Powering Arduino and servo motor

The main goal of this project is to control a servo motor with an Arduino. I have a 12V 5Ah power supply connected to the Arduino. The servo is connected to 5V and GND on the Arduino. When using ...
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24 views

How do I show a four wire servo motor in Proteus?

I have a four wire servo motor which I am interfacing with my micro-controller. I use the feedback wire to know the angle or position that my servo arm is at. The standard way of interfacing a three ...
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2answers
95 views

Powering a servo with 9V battery and other questions

I'm working on a small project. I want to make an internet-connected dog food dispenser to attach to my dog's crate so I can dispatch a network command remotely to dispense it. I have a Raspberry Pi ...
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2answers
58 views

How does the comparator set the motor speed at a fixed level?

How does the comparator below sets the motor speed at a fixed level? I can think that the comparator output will turn ON if the speed proportional generator output voltage is lower than the zener ...
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42 views

How this servomotor calibration is supposed to work at electrical level?

Here is the Wiring Diagram: I am trying to understand how this servo motor calibration process (see screenshot of BMW software) is supposed to work at electrical level. In particular: there is 2-pin ...
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1answer
612 views

Would the motor reverse if phases swapped for this case?

A servomotor power connection pins are given as follows: U V W are the three phase terminals. Would the motor reverse if I mistakenly swap phases U and V namely if I connect pin 1 to W and pin 3 to U?...
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1answer
17 views

Running MG996R servo using Eneloop Pros

Recently I just bought 2 pack of Eneloop pros, and have fully charged it. By using a multimeter I saw that the voltage went up to 1.3 ish after it is fully charged. And I'm planning on using 5 of them ...
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1answer
55 views

Servo arduino using eneloop

Say if i use 5x eneloop AA batteries to run 6x MG996R servo, will it be good enough since im afraid for the motor if it will burn out. I already read the spec sheet what im afraid is the stall current
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1answer
89 views

What can be the cause for the servo to jitter continuously while powered?

I'm using an HS-785HB servo (https://www.robotshop.com/media/files/pdf/hs-785hb.pdf) for my project. I'm working on the Mbed platform and it uses C++. The servo library I use is Servo.h and I'm ...
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1answer
71 views

Turnigy servo motor needs push to start

I currently have an inspection robot deployed in a remote part of Africa that has a failing Turnigy TGY-6114MD servo. The issue started happening during normal operation and was working fine ...
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1answer
56 views

Some questions about a servo motor driver input ratings

A servomotor drive input can be supplied either 3-phase or single phase. The photo of the driver nameplate is shown as follows: Does that mean in full/nominal load if this drive is supplied single-...
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40 views

Convert 2 wire pwm signal to servo control pwm

Bit of a weird one - got a controller that has a variable 12v PWM output (~100Hz), I can't change this output as the signal controls other devices, I haven't got an oscilloscope but I belive it's ...
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36 views

Uncertainty in current values of Power HD digital servo motor

In a project, we want to lift the load of 5 kg on the ground to half a meter. For this purpose, we use a 360-degree rotating PowerHD digital servo motor with a stall torque of 20 kg / cm. Motor ...
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2answers
128 views

What is a “digital” servo motor?

ServoDatabase lists various different servo motors, and describes some as "analog" (e.g. SG90) and some as "digital" (SG92R). "Digital" servo motors are apparently better (they seem to cost more, ...
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1answer
56 views

Connect servo and dc motor to raspberry pi

I'm currently working on a project where I have build a RC car with one DC motor (forward/backward) and one servo motor (steering). I'm a newbie with electronics so I figured out by myself I needed a ...
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2answers
55 views

How to choose proper power supply for 8 servos on Adafruit shield with Arduino Uno controller

I use Adruino Uno micro-controller powered with USB 5V from PC and Adafruit 16-Channel 12-bit PWM/Servo Shield on it with 1000uF capacitor, powered with 6V 2A power supply. Seems like it is not ...
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61 views

Automatic bird feeder with battery using servo

I am considering to create an simple automatic bird feeder with a servo motor and a plastic bottle, like this project, but without remote controller. The thing is that I would like to power it not ...
2
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1answer
129 views

Why do my servos break?

I'm messing around with some servos and one by one they stop working. I've got a Raspberry Pi to which I connected a pca9685 servo driver board which in turn connects to 3 of these cheap servos. I ...
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1answer
48 views

I want to use 4x MicroServo with 9V battery

I have 4 Tower Pro MicroServo 9g SG90 I want to power with a battery. This is the datasheet I found online. I have a small breadboard and some resistors laying around (220, 1k, 10k), and a 9V battery....
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1answer
64 views

Addition of limit switch for power supply stops circuit from working. Circuit works fine without the switch?

I am having an issue with a limit switch to turn on and off a circuit. I am using a L7805 5V regulator with a regular 9V battery as the power supply for my circuit. When I plug in the 9V battery ...
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20 views

AC servo motor driver problem (new, more precise) [duplicate]

I was not precise in last question. My AC servo motor driver "panasonic MSDA023A1A" which I use on CNC cutting machine is started to display alarm code "Err_18", which stands for regenerative ...
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2answers
81 views

Question about AC servo motor driver

Does anyone know what means when AC servo motor driver displays error code for "regenerative discharge", and stops working. What this mean in practical situation. This happens from 1 to 10 minuts ...
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1answer
151 views

Calculate torque from current induced in a single phase of a 3 phase AC Induction servo motor

I'm looking to measure the torque or slip angle on an AC induction (asynchronous) servo motor given the current induced in one of its phases. The servo and drive is yaskawa. Example data is shown ...
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1answer
1k views

Is this a correct way to route current away from breadboard?

I've recently grown interested in electronics and robotics, so I wanted to move my contraption using a servo motor. A 555 chip creates a PWM signal for servo for positioning, and I control the servo ...
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2answers
54 views

What are the 15 wires on my 700W BLDC servo motor for?

So I have this 48V 700W DC servo motor and I cannot find the datasheet from the supplier. Unlike most stepper and servo motors, this one has 15 wires coming out of it. It says that it has an encoder ...
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1answer
155 views

Arduino Circuit for High Power LED + Servos

I'm new to the Arduino game, but have experience with electronics in general. I am hoping to hook up two servo's and a high power (1W) LED up to an Arduino, to control them. Due to my inexperience, I ...
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1answer
75 views

Typically, what is the function between pulse width and angle in a servo motor?

I have a pair of Futaba S3001 servers that I am controlling with a Raspberry Pi, using the pigpio library. To control the angles of the servos, I set the pulse width according to the formula: ...
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1answer
145 views

Servo motors twitching , arduino Mega [closed]

I am working on a school project: a robotic arm controlled by an Arduino Mega board, 6 servo motors: https://hobbyking.com/en_us/power-hd-lw-20mg-servo.html?___store=en_us 1 PC power supply (450W), ...
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69 views

How drive two servos using BBC micro:bit using JavaScript?

I'm playing with a BBC:micro using EspruinoJS and I'd like to control a couple of Feetec FS90R continuous rotation mini servos(datasheet pdf link). I had no luck using ...
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2answers
66 views

Is there a demux IC that allows a default signal (not just digital 0) to go to the non enabled outputs?

I am trying to control multiple servos using a Demux and I want the selected output to have one pwm signal and then all of the non selected outputs to receive the same default pwm signal instead of a ...
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1answer
37 views

3 phase voltage problem when connecting to servo

I have 380V 3 phase with the following line to neutral voltages: L1: 238V, L2: 234V, L3: 224V. The system has a single phase servo driver that takes in L3 and N, however when hooked up L1, L2, and L3, ...
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1answer
93 views

Confusion on Servo and PWM (AVR) [duplicate]

For reference im using an AVR Atmega 328p, and the servo specs i'll be using says this: Pulse Cycle: 20 ms (I assume this means the "period") Pulse Width: 600-2400 µs So from my understanding, ...
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88 views

Difficulty with servo control using TI MSP430

I'm using an MSP430FR4133 chip to test out a servo (I haven't used or interfaced with servos before). I believe I've attached the servo wires to the correct pins, but when I run the program to turn it ...
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1answer
44 views

Two different power sources with same voltage and current producing different results

I'm working on a little 3D printed robot (Otto DIY) with an ESP8266 and four servos, and I need to feed it with batteries. As a first thought, I considered some 18650 cells I had lying around, with ...