Questions tagged [servo]
A kind of motor with automatic feedback, such as a hobby RC servo.
-2
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0answers
36 views
What is the best choice of rechargeable battery for an arduino pro mini + SG90 + EMG sensor? [closed]
So, I am building a project that requires that an Arduino Pro Mini read out a value off of a DFRobot EMG sensor 10 times a second and then, when the threshold value is exceeded(approx. once every 5-10 ...
0
votes
1answer
44 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
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1answer
49 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
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0answers
36 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
votes
1answer
64 views
Is it better to stop the pulse stream to a servo motor at rest? [closed]
I am driving some servo motors, from a Raspberry Pi, using the PIGPIO library.
When I am sending commands to the servos, it's typically for very small movements, at around 5-10 commands per second, ...
0
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0answers
20 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 ...
-1
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1answer
77 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
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1answer
38 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
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2answers
41 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
56 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
103 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
38 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
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1answer
54 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
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0answers
19 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
45 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
55 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
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1answer
107 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
42 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
78 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
55 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
56 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
66 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
47 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
37 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
71 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
124 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
165 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
833 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
33 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
54 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
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0answers
94 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/...
4
votes
1answer
79 views
Re-wiring experimental apparatus: Questions regarding proper ground, DC power supplies, and precision instrumentation
The apparatus consists of a large metal spherical chamber attached to a metal table. There are two electrical enclosures bolted to the table legs. The chamber is outfitted with multiple servomotors, ...
0
votes
1answer
180 views
Which kind of motor is best recommended for a curtain opener?
The general idea is to build a curtain opener, using some kind of motor connected to my arduino. Which will cause the pulling-functionality...
So the following options are :
1. DC motor
I feel like ...
0
votes
1answer
62 views
About the torque of mini servo motor
I'd like to automate button pressing on Nintendo DSi for a certain purpose.
For this, I think I will use a raspberry pi and a mini servo motor SG-90.
My question is, would the SG-90 would give ...
0
votes
1answer
73 views
Servo motor driver - 12V to 0~10v
I have a servo motor and it's driver
I wired up everything and it's almost working.
The driver generate a 12V signal and I control the motor with 0~10V analog command.
I started from the point 5mA ...
0
votes
0answers
28 views
Best Hardware Approach to Play With multiple Buttons, Switches, steppers, Servos on Arduino
I would like to control the movements and positions of different actuators (steppers, DC motors, servos...), by either controlling some with potentiometers and / or getting them to move to preset ...
0
votes
1answer
165 views
How to reduce noise in this circuit?
I'm using a Raspberry Pi in a circuit I'm building that includes a few elements.
Elements in the circuit:
PWM driver to control 3 servos
Mic board for recording
Class D Amplifier that drives 2x3W ...
0
votes
1answer
151 views
Reduce 8.4 volts to 6 volts
I am developing robot for a project. For that i have to control 5 servo motors of different types. Here are my servos..
Power Pro MG995 (4.8 V to 7.2 V)
Savox SW-0250MG (4.8 V to 6V)
And my ...
1
vote
0answers
82 views
Servo sometimes freezes when used with another servo and MFRC522 RFID reader
I have looked, Googled and researched all over by now and I have not been able to find anyone experiencing a similar issue to mine, so I thought now would be the time to ask my own question on SE.
...
-1
votes
1answer
131 views
How to achieve positional servo control with an Atmega328P?
I am trying to drive my SG90 servo using the timers on the Atmega329P using phase correct PWM. I have set up my motor well enough that it rotates, but I cannot get it to stop - the servo motor just ...
0
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0answers
169 views
What battery to use for a MG996R High Torque Servo?
This servo’s operating voltage is 4.8v - 7.2v. The running current is 6v @ 500mA - 900mA, and the stall current is 2.5A @ 6v.
Now, I plan on using this servo 24/7 on my door lock ( this might be a ...
1
vote
3answers
93 views
Is there a type of servo that can be de-energized and moved manually while giving input back on its position? [closed]
Is there a type of servo that can be de-energized and moved manually while giving input back on its position?
So say it's at 0 degrees, I turn it to 5 degrees and I get input back from it indicating ...
0
votes
2answers
151 views
Controlling multiple servos and servo driver through Blynk
I'm working on a project to control multiple servos using a servo driver, through sliders on Blynk.
I'm using:
ESP8266 WeMos D1R2 microcontroller (wifi connected)
Adafruit PCA9685 Servo Driver
Blynk ...
1
vote
2answers
80 views
Inside a library of common functions (Instruction Set ----> High Level Program) is there information of how many clock cycles they use?
I am a Mathematical Person. So thinking from that perspective.
To make my question slightly more concrete. I was thinking of controlling a hobby servo through a Uart serial data stream.
I am ...
0
votes
1answer
298 views
Servo motor rotation angle accuracy [closed]
Let's say I want the motor rotate to 21.73 degree, will servo motor rotate to the desired degree accordingly? Or maybe the motor will rotate to 22 degree?
0
votes
1answer
60 views
Measure the load on a servo very precisely?
I am trying to make a servo turn a dial. At certain points in the revolution, the dial will "stick" on certain points, where there is more resistance.
I would like the servo to be able to very ...
0
votes
2answers
134 views
Reading Servo Motor Status with PLC
I have a Panasonic A6 servo driver paired with Velocio Ace PLC. I am trying to read servo motor status. I followed the wiring diagram from the servo manual and connected the PLC digital input to Servo'...
