Questions tagged [servo]
A kind of motor with automatic feedback, such as a hobby RC servo.
433
questions
-1
votes
1answer
36 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, ...
-1
votes
2answers
53 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 ...
0
votes
0answers
42 views
How can I reset servo position? [migrated]
When I do
myServo.write(0)
It isn't straight, I want it to be straight but it is at about a 45 degree angle anyone know how to reset the position with arduino to ...
0
votes
0answers
73 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....
1
vote
0answers
55 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? ...
0
votes
3answers
66 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 - ...
0
votes
3answers
65 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:
...
0
votes
1answer
24 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 ...
0
votes
1answer
32 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 ...
0
votes
2answers
72 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 ...
0
votes
0answers
19 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 ...
0
votes
2answers
78 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 ...
0
votes
2answers
55 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 ...
0
votes
0answers
33 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 ...
4
votes
1answer
597 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?...
0
votes
1answer
16 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 ...
0
votes
1answer
53 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
0
votes
1answer
82 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 ...
0
votes
1answer
60 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 ...
0
votes
1answer
55 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-...
0
votes
0answers
37 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 ...
0
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0answers
29 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 ...
0
votes
2answers
123 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, ...
0
votes
1answer
53 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 ...
1
vote
2answers
50 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 ...
0
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0answers
59 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 ...
1
vote
1answer
109 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 ...
0
votes
1answer
44 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....
0
votes
1answer
58 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 ...
0
votes
0answers
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
...
0
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2answers
62 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 ...
1
vote
1answer
124 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 ...
11
votes
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 ...
0
votes
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 ...
0
votes
1answer
146 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 ...
0
votes
1answer
65 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:
...
0
votes
1answer
127 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),
...
0
votes
0answers
64 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 ...
0
votes
2answers
64 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 ...
0
votes
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, ...
0
votes
1answer
85 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, ...
1
vote
0answers
82 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 ...
0
votes
1answer
40 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 ...
2
votes
1answer
77 views
Raspberry Pi losing power
We are building a Raspberry Pi with 2 servo motors connected to one power supply. But whenever the servo motors are provided with a signal to power and then move, the raspberry pi's green light turns ...
0
votes
1answer
129 views
Servo wire connection layout [closed]
I'm trying to figure out with E-flite 7.6g Sub-Micro Digital Tail Servo JST my particular one has 1.0mm to male JR connector, so need to be connected with some switch, I have 2 other servos here, ...
2
votes
2answers
185 views
Is Axial Gap (pancake) motor better for servo drive applications?
I heard from someone that axial gap /pancake motors (lynch or etek) are better for servo control (speed and position) than standard radial flux DC motors. Both motors are brushed type.
I don't ...
1
vote
4answers
2k views
Servo PWM: Why 20 ms period?
I'm working with ESC controllers which receive PWM signals that are very similar to those that control a standard Servo motor, i.e. a 50 Hz PWM signal (20 ms period) with duty cycle of 5-10% (1-2 ms ...
0
votes
1answer
37 views
switch 3 references voltage for my servo position
I have some positioning servo driver and servo with pot feedback.
Now I try to build circuit to switch between 3 positions. For testing I just use 3 way switch and 3 pots as voltage reference, but in ...
0
votes
2answers
56 views
How to make servo rotate in a given range no matter how its placed in a chassis
I'm working on a humanoid robot project everything works but I have one issue. When I disassemble and then reassemble the joints, the servos will more than likely be placed in a different rotational ...
0
votes
0answers
109 views
Undervoltage/capacitor problems with Raspberry Pi
My question is about the correct way to add a capacitor to a circuit with a Raspberry Pi driving a servo.
I have seen undervoltage events in the logs of my app when the servo runs so I added a 470uF/...
