Questions tagged [servo]
A kind of motor with automatic feedback, usually for positioning, such as a hobby RC servo.
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Where is the majority of current drawn from for a servo motor? [closed]
I'm outlining some modifications I want to a servo motor project, one of them being to add a current monitor like the INA197 to the power line for a servo motor. The servo can experience some elastic (...
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How to power 8 servos with 6.8V at 2 amps while controlling with RPi Pico? [closed]
I am working on a project where I need to power 8 DS3218 servos at the higher end of power. I am using the RPi Pico to control them and am powering with a 3 cell LiPo battery.
I am wondering how I ...
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Powering Raspberry Pi and 11 servos on one battery pack
I am working on making Sox from Lightyear using a Raspberry Pi as the main board. I have a PCA9685 servo controller that can drive up to 16 servos using I2C.
The issue I am facing is that my X728 ...
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What wire to use for about five 5 V 1 A continuous servo motors in parallel?
I am not particularly familiar with electronics and circuits in general although I do have some basic experience.
My concern is that to carry enough current for all five motors I would need at least 5 ...
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How to tell if a motor is slightly jammed?
I am trying to use a motor for an application that requires sensitive handling of playing cards (a card shuffler). The main objective in this case is not speed but control. The most important thing is ...
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Torque in kg·cm vs N·cm (servo vs rotary switch)
I don't understand the different specifications of the maximum force of a servo motor vs the torque of a rotary switch. In the following example, there is a servo spec'ed at "Maximum Torque at 6V:...
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Right Way to Step Down a PWM Signal
I need to control 4 servos using a PLC that operates with 24V. The problem is that servos use only 5V. To accomplish this, I built a simple circuit using some 7805 and a large 1000 µF capacitor to ...
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Getting "servo jitter" when trying to move Actuonix actuator slowly. Works fine when going from 1-2 ms in RC protocol
I have a PQ12-30-6-r Actuonix actuator that's moving erratically. When I set the width of the pulse from 1-2 ms then it will move down immediately, and vice versa back up. I can go to 1.5 ms as well, ...
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Floating point on Cam Tables?
What's the general way to handle floating point error on a cam table? Constraints are using:
PLC Open function blocks
Scale on application units for servo setup
is an ...
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how to implement external sinusoidal commutation using encoder feedback in BLAC motor?
I have a linear permanent magnet synchronous motor with sinusoidal back-EMF and a sinusoidal driver with current operation which takes two reference sine waves with a 120-degree phase difference, ...
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Can the effective transmission rate from a python script to an arduino be increased when using serial communication?
I attempting to move a servo (controlled by an Arduino) with a Python script. The Python script issues a command to the Arduino to tell it where to move the servo head to. The communication is handled ...
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Troubleshooting servo issue on custom PCB
There is an issue on my custom ESP32 PCB board. One of its features is to control a very high torque hobby servo motor (this one). The PCB works perfectly with a bench power supply but not with a ...
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Raspberry Pi Controlling Servo and timer
I would like to create a program that uses a Raspberry Pi Pico, this display: https://thepihut.com/products/four-digit-seven-segment-display-red, SG90 micro servos, and one of these buttons: https://...
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Do I need to level shift the PWM signal from a Raspberry Pi Pico for regular RC servo?
I am trying to control regular SG90 servo with a Raspberry Pi Pico. My problem is that those servos produce maximum torque while powered by voltage between 4.8V to 6V (5V is optimal for me.)
I powered ...
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How to power multiple servo motors?
I'm doing a robot arm for a project, but programming has become the least of my problems.
I don't know how to connect the servo motors. I have a power module that apparently has around 5 V of output (...
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What could've killed my ESP32S MCU?
I'm making my project and I managed to kill 2 ESP32 boards. First time I thought it was just accident (me shorting 2 wires) because my cables were messy, but it happened again and the circumstances ...
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Can not get maximum torque (stall torque) when current reach peak current
I am using FOC to control torque of 220V AC servo (SPMSM) with 36V power supply at low speed (100-200rpm).
I tested with some servos (different manufacturers) which has specs as the below table. But I ...
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Do you need a decoupling capacitor for an RC servo connector?
I have watched a lengthy youtube video about decoupling capacitors and how you should use them.
I am in doubt if you should add decoupling capacitors in front of 3p connectors for RC servo motors such ...
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Prevent RC hobby servo from moving during power up
I have this unfinished PCB with 12 servo connectors and a buck converter circuit (the inductor has no 3D model yet.)
I want to prevent these RC hobby servos from moving at all when I power up this ...
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How can I reduce voltage for my Arduino?
I would like to use a muscle signal sensor for controlling the servo motors and LEDS through my Arduino. I would like to reduce the voltage from 18V to 9V on the signal wire (green wire on the picture)...
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Controlling multiple continuous rotation servomotor for a vending machine subsystem
I am trying to implement/design my own snack's vending machine and I have already solved the payment transactions through MDB components and communicating them by means of a MDB to Serial adapter to ...
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Can a BLDC motor be actively retarded (braked) by decreasing the electrical drive frequency?
I need to implement very fine (positioning) control of my BLDC motor system, one which has significant inertia. Basically servo control of a weighty object.
Is it possible for a BLDC motor be retarded ...
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The interaction between the encoder and the servo Arduino Uno
Why when the turn occurs in the + direction, it is also read -. Assignment: reading of the encoder occurs with a period of 100 mc, when the encoder rotation is detected the servo also rotates by 2 ...
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How would I connect 12 MG996R servo motors to a 4.8 volt four AA power supply via GPIO pins common between all parts?
The servo motors have GPIO wires for data, ground, and voltage. I have a power supply that, similarly to the servo motors, has a GPIO pinout with ground and voltage. The problem I'm running into is ...
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Powering servos from the 5 V rail on Jetson Nano
Jetson Nano 2Gb
I’m looking to interface with a PCA9685 16-channel, 12-bit PWM servo driver with the Jetson Nano.
From experience I know that you need to power the servo and other devices from an ...
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What is the control chip name of a MG90S servo motor?
I'm learning about servos, and was wondering about the control chip name of MG90S.
I do not have the possibility to open one at the moment. It seems that this information is not easy to find, in ...
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Why is connecting an analog servo distorting this PWM-wave?
I'm working on a project where I'm trying to steer an analog servo using a PWM-wave generated by this circuit. I found the circuit design from this article. It consists of three operational amplifiers ...
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What is this 3 pin connector?
I wanted to integrate this piece in one of my projects but I can't find the cable that fits
it's 3 pin and the outside dimensions are:
w : 4.5 mm
h : 2 mm
I tried with a SH1.0 cable but the height is ...
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H-bridge servo circuit design
I have bought several servos from Aliexpress, namely the DS3235SG. Since a few the servo-boards burned up and replacement is not available, I went through the process of reverse engineering the ...
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Servo motor doesn't go beyond 90° when driven by an ESP8266
I have interfaced a Tower Pro SG90 servo with a Raspberry Pi and ran sweep.py which takes the servo from 0 to 180° perfectly fine. When I interface the same servo with an ESP8266 and use the <servo....
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RC servo power switch not working properly
I am troubleshooting an ESP32 PCB I designed. Every function is working properly except the RC servo (Futaba HPS-AA701) I am using is not switched off when its ground is opened by a switch.
My PCB is ...
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Recommended device for an airplane motorized throttle
I'm trying to implement an 737 motorized throttle.
For those not familiar, it's something that's on a motor shaft and needs to move about 80-90 degrees. Max. load is about 2-3 lbs. I also need the ...
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Closed loop system of servo motor for master and slave flex
I am really new in Arduino. So what I have is two flex sensor, a master flex for the left hand and a slave flex for the right hand. What it will do is that when the master flex is bent, the servo ...
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Foldback current limiting in RC servo application
Background: A 7.4V 2Ah battery (LP-E6 from Canon) powers our system (camera/laser mounted on a one-axi gimbal). The gimbal motor is an RC servo (HPS AA701 from Futaba) connected directly to the ...
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Servo motor duty cycle to angle
I am trying to control a servo motor using a square signal with a varying duty cycle. The data sheet of the motor says that the frequency of the signal should be 20 ms.
In addition, if I need to ...
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How To Install Batteries For A System Consists Of Different Components That Work On Different Voltages?
My System Consists Of Three Different Components (Arduino - MicroServos - LED(12v)), Can I Install Batteries As Shown In This Image?
Description:
Connecting Three Batteries In Series, And Take A ...
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Advice on translating a 3V3 PWM signal to a 6V PWM signal
I'm trying to control 3 20Kg servo motors powered by 6V (Link to servo motor datasheet here), using an STM32L5 microcontroller. Currently, the design uses an Arduino Pro Mini powered by 5V, and using ...
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Servo motor control maximum angle modification
I'm trying to figure out if it is possible to modify a JX Servo PDI-6208MG 8KG Servo 120 Degree 0.07 sec, which matches the required speed, size, and torque, but make it rotate over 270°. I'm using an ...
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ATmega2560 fast enough?
I want to drive a servo with the ATmega2560. I'm wonder if it can handle the 10 kHz encoder at full speed and the 3-phase chopper the driver has to operate (runs at 12 kHz).
Or do I need to start ...
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Why would a laptop power off due to Raspberry Pico + servo?
For learning purposes I used Raspberry Pico to control a servo motor (using PWM.)
I used an SG-5010 servo.
I powered the servo from the Raspberry Pico (which was itself USB-attached to my laptop), GND(...
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Stand-still current of servo motor [closed]
Is the stand-still current the maximum current that a servo motor draws?
Is it logical to say that it is the counterpart of full-load current of an induction motor?
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What is the difference between BLDC motors and servo motors? [closed]
BLDC motors and servo motors seem physically the same. I know servo motors can do torque control, speed control, and precise position control, but BLDC motors can only do speed control.
Are there any ...
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Arduino to intelligent servo communication over UART not working properly
I am building a robot using LX-225 intelligent servos.
These servos communicate using a half-duplex UART. Using a controller, it is possible to control the servos with an Arduino (among other MCUs.) ...
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Servo motor initial position hack
I'm working with MG966R servo motors and would like to physically change its initial position. I would like that as soon as it's turned on and the Arduino puts the servo in its initial position (0 ...
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Can a servo be made to oscillate within n degrees of its angle position
If I want to be able to give a servo a certain angle and also have it oscillate +/- n degrees of that angle (maybe even at some frequency f), how would I be able to do it with code? This is for a ...
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LM1117 5 V regulator and 2 servos
I just started my first PCB and I have a question. I want to use two servos (SG90s) and a 5 V regulator powered from a 7.4 V battery.
After all my calculations the temperature that is dissipated is ...
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Arduino board consumption benchmark
I know consumption depend of the type of application, but I would like to know if a comparison of average consumption exist between arduino and similar boards (Teeny/Dfrduino...).
The board I am ...
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Servo vs stepper packages
I understand how servos and steppers are different (or at least I think I do), but I noticed several things that I don't understand.
Most steppers seem to come in hard metal cases while servos are ...
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Driving a p-channel MOSFET with a n-channel MOSFET
I want to use a p-channel MOSFET to turn off and on the power to a 6 V l7806 voltage regulator that powers a 6 V servo. The reason is to save battery power.
The controller is a 5 V Arduino. It is my ...
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RC Servo Auto-Sweep with Op amp Control
I'm trying to design a circuit that will sweep an RC servo motor (an SG90) continuously from -90deg to 90deg position and to repeat this process indefinitely. I'm aiming to use one IC (a quad op amp ...
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