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Questions tagged [servo]

A servo is a type of motor which uses a feedback mechanism for precise control of speed and position.

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1answer
19 views

'myservo' does not name a type

I keep getting 'myservo' does not name a type as an error message, I have already looked other solved questions like this one but I can´t find the mistake. I would be very glad for your help. /*******...
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0answers
13 views

green house vent servo based reading a sensor wrong

I am trying to make a green house vent that will open based on the temperature, however in my code the thermometer is not reading correctly, I've been designing it in tinkercad and heres the link ...
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2answers
21 views

How to rotate a servo motor on a specific angle?

I am trying to rotate a top on a specific angle after every 1 second. For example: 1 degree/second. I have two question: Can I achieve this with servo motors? If not, what motor should I use? I ...
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1answer
34 views

Can I solder wall cord directly to servo?

I have a servo which requires 7.4v and a wall power cord which says the output is 7.4v but the connector does not fit that of the servo. Is it safe to snip off the end of the wall cord and solder the ...
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1answer
20 views

Problems when attaching a second ultrasound sensor (HC SR04)

I am working on an obstacle avoiding robot. It uses an ultrasound sensor to avoid obstacles, but currently has trouble avoiding objects that are diagonal to it. Thus, i want to add a second ultrasound ...
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1answer
51 views

Servo motor (HSR-1425R) not running continuously

I'm trying to programme a servo motor to reach certain positions. I have a 360 degrees servo motor, so I can not use the Servo library and I can only control the speed. Therefore I want to regulate ...
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0answers
12 views

Use joypad to control a robotic arm with 8 servos

I'm using Arduino UNO and the SSC-32U board to control a robotic arm made up by 8 digital servos. At the moment, I'm correctly able to move each servo by using the following code: move1(servo_pin, ...
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1answer
15 views

Options for powering a Futaba servo

In one of my earlier questions it was determined for me that my Futaba Servo should not be powered directly from the 5v pin of my Arduino and should instead be powered by an alternative source. I was ...
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0answers
29 views

Servo not moving

I have connected my servomotor (MG996R) to my L293D motor shield, which is connected to an Arduino Uno R3 Board. I use 4x AA 1.2V NiMH batteries to power the shield, and a regular 9V battery to power ...
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1answer
49 views

Switch Control Between Two Different Techniques

I have implemented PID control of a generator governor to maintain a constant RPM using an Arduino Uno. It works pretty well, but there is a tradeoff between stabilty and response time. Using PID ...
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1answer
19 views

Powering a L293D + 2 motors + servo [closed]

I would like to power a L293D Motor Shield, two DC motors and a servo motor. I'm using an Arduino Uno R3. Here are the motor specs : DC motor Servo motor Apparently my motors don't need more than ...
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1answer
84 views

16-Channel 12-bit PWM/Servo Shield check if it is powered by adapter

I'm using Adafruit 16-Channel 12-bit PWM/Servo Shield with Arduino Uno controller In setup() I have a number of default positions with PWM commands for motors with plug of USB to PC and turning on I'...
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1answer
33 views

SG90 servo motor not working

I tried to test a servo motor for a project using this simple circuit but the motor won't move. I've used this before with the same setup and code and it worked, but now suddenly nothing works, even ...
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0answers
17 views

how spilt the sensor values then use them to control servos in nodemcu v3?

#include <ESP8266WiFi.h> #include <WiFiUdp.h> #include <Servo.h> const char* ssid = "Ece Control"; const char* password = "myphonewifi"; WiFiUDP Udp; unsigned int port = 5514; char ...
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1answer
127 views

declared variable inside void setup is forgotten in void loop

if i declare a var in void setup() and try to do something with it in void loop(), it just says that the variable is undeclared. here is the code: #include "Servo.h" void setup() { Servo servo1; ...
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1answer
29 views

Why my servo motor is always on?

Why my servo motor is always on? #include <Servo.h> Servo myservo; int pos = 0; void setup() { pinMode(2, INPUT); myservo.attach(9); } void loop() { if (digitalRead(2) == LOW) { ...
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3answers
104 views

Using Servo on Timer3 on a Leonardo

I would like to use the Radiohead library and control a servo from the same Leonardo board. Now the Radiohead library occupies timer1 and therefore cant be used together with the servo library. (It ...
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1answer
28 views

About UART one transmitter multiple receivers

I have vector nav vn100 IMU that sends data serially rs232...I want to drive 4 servo motors using atmega32 upon roll angel from vector nav vn100..atmega32 can only drive 2 servos using hardware fast ...
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0answers
28 views

Arduino Port randomly changes whenever I punch correct RFID tag

I was working on an Electronic Door Lock/Unlock system using Arduino Uno and RFID Reader/Tags on Ubuntu 18.04.02 lts. Now the problem is that whenever I punch-in the correct RFID tag to the RFID ...
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0answers
14 views

Tower pro mg3996r servo problem

Recently I bought 5 original TowerPro mg3996r metal gear servo for my Robotic's project, I tried to test run each of them separately with arduino built in example servo's 'SWEEP' code. I tried to ...
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0answers
48 views

SOLVED Accelerometer/gyro MPU6050 is freezing after random time

SOLVED: I "solved" the problem by cycling my Arduino's power and I haven't had an issue since. I would still like to figure out what was going on. I still think it's something in that MPU6050 library ...
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1answer
35 views

Servo motor not working properly with arduino

I have some problem with my fyp, which is auto serving of food using train. I have 4 servo motors, first servo motor's function is to connect the track to table no.1, and second motor for table no.2 ...
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1answer
49 views

Wanted to control 2 servos with serial read [closed]

I want to use 2nd servo only when 1st is in up state by asking user whether he wants to fire or not.(code in bold is not working ) #include <Servo.h> Servo myservo; Servo trigervo; ...
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0answers
18 views

Joystick Bluetooth to Bluetooth to Motors [UPDATED] [duplicate]

I have updated the code, switching the Bluetooth sensors because my codes were switched(master was slave, and slave was master), putting the hc05s on the same baud rate, and removed certain comments, ...
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2answers
55 views

How to hook up led matrix 1088AS to a PCA 9685 servo controller? there is a way? [closed]

I'm confused about the pinout, I can't figure out which physical pin of 1088as red led matrix must to hook up to the PCA9685, if there is a way to do this I found this image the final target is to ...
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1answer
41 views

Slow speed with stepping motor

I am currently working on a project where i need a stepping motor and a servo running at the same time, the servo turns fine and the speed is ok, but the stepping motors speed is very slow and as a ...
0
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1answer
43 views

I am building an robotic arm by using flex sensor, servo and 2 xbees

Rx Code: #include <Servo.h> Servo myServo; void setup() { Serial.begin(9600); myServo.attach(9); delay(5000); myServo.write(0); } void loop() { while(Serial.available()==0); int d = ...
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1answer
94 views

Linear Actuator Arduino Control

Update: Here is my first try based on the code I found and it did not work. The first time I uploaded it, it move to the "current positional value". But did not do the void loop part. Just holds the ...
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1answer
29 views

Brushed ESC won't move slowly [closed]

I'm trying to control the brushed motor in a Traxxas Slash RC car with the built-in XL5 ESC using the Servo library on Arduino. I previously had success controlling this car with a Pololu Micro ...
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1answer
55 views

Basic Arduino Airplane Control

I have a task where I need to control the airplanes thrust and altitude direction(Up-Down). For the thrust I thought of using a DC Motor and a Servo for the other. Control of servo will be from the ...
0
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0answers
73 views

Multiple Servo motors with an ultrasonic sensor

I am building a robot arm with 6 servo motors that works with an ultrasonic sensor. The purpose of the program is when an object is detected at 20 cm (fixed position) from the sensor, the buzzer and ...
0
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1answer
40 views

Attach() resets servo's angle

I'm working on code that will control micro servo. I use generic servo and built-in library for controling servo. Microcontroller is generic STM32. Controlling servo Works as expected. But I don't ...
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1answer
46 views

Servo delay problems

So I had a test last week with the Arduino Uno starter kit. We got a task including the servo. I had to get the servo to go from 0 to 90 degrees and it was supposed to use 4 seconds to do so. Than ...
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1answer
62 views

How to execute operation once till a condition then restart it from start [closed]

I am making a project using IR sensor,servomotor and Push button. I am not able write code for the logic as stated: it will execute the operation when it reads the digital value of IR high and rotates ...
1
vote
1answer
80 views

Hold button / press button/ push button

I want to control a servo motor in a way that if you push the button, you can control it by potentiometer a if you push double time, you can control servo with infrared if you hold button step ...
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0answers
24 views

Servo doesn't move with fingerprint

I've a project which i need to make a door open and close using the fingerprint. I've successfully made fingerprint works just fine it reads and confirm the fingerprints stored in it but the servo ...
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2answers
58 views

Servo Motors PWM pins, Arduino Uno

I wanted to understand how people are connecting a servo motor to pins without PWM, so I went searching and I read that the Servo library uses the timer1 of pin 9 and pin 10 to be able to use other ...
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0answers
16 views

Will this power supply work with a MG-996R Servo?

I'm trying to power a tower MG-996R servo with this universal AC power adapter for an arduino uno project. The adapter can output: 3V/4.5V/5V/6V/7.5V/9V/12V.Output current:1.2A, also has a USB port:5V ...
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1answer
31 views

Code causing Servo motor not to work!

My sketch is compiling and loading, but when the program runs, the Servo motor does not work. The buttons work, the LED light works, Piezo buzzer plays the melody, the Stepper motor works but not ...
0
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2answers
19 views

Servo starts to shake when I added SIM900.begin(19200);

Hello I'm working on this mini project. This project works this way, Whenever someone type wrong password, LCD will display "Access Denied" and send an alert to sms using GSM module. I used 2 ...
0
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0answers
15 views

Cannot access a servo library with my program

As I tried an new exercise, I came to an other problem. although I put an include in my system (#include ), the program will not acknowledge (Servo myservo); and again a problem? Any help?
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1answer
90 views

Trying to power multiple servos at once using a Arduino Mega

Recently I have been trying to do a project for my end of year project, it involved making a humanoid arm. I am still a newbie at these things, I usually have my friend do the wiring, but since he ...
4
votes
4answers
205 views

How do I make a Servo Stop if it Hits Resistance?

I am trying to make a device which will turn a turn key with a servo. However, I want it to stop turning the turn key if the resistance is too great (meaning it is locked and will not ever turn). ...
0
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0answers
30 views

Question about controlling servos with PWM while being able to accurately read the current from a sensor

Hi I am hoping to design a custom board ATMEGA32u4 with practically a Arduino leonardo bootloader. I plan to control up to 12 servos while being able to read back the current sensor voltage of an ...
0
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1answer
41 views

Newbie question: Set servo at certain degrees when something happens

I am trying to set my servo at f.e. 90 degrees when the friendlyValue of the soil sensor is < 50%. The servo isn't moving at all, is it because the code is running too fast and the servo doesn't ...
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1answer
41 views

servo starts rotating whenever it is plugged

I am making a fish feeder using an Arduino Mega 2560, servo motor SG90 and RTC DS3231. I want to make it rotate twice a day, i.e. morning and 9 o'clock evening. Whenever I plug my Arduino board to ...
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3answers
73 views

NEED Help With Servo motor

I have just bought a MG90s tower pro servo for my school project and there is a problem. As soon as I connect my servo to the cnc shield or directly arduino, the whole arduino board turns off. I ...
0
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3answers
165 views

Why a servo doesn`t move to angles properly

I've got to do a project which uses a servo to drive a turntable. How much I adjusted the angle, the servo seemed to shift every time it spinned. For instance, the 0 degree angle was getting a bit ...
0
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0answers
78 views

Servo motor rotates back to 0 after reaching destination

I am using a XMG-996R servo motor. It is controlled by and Arduino Uno board. The problem is when I tell it to go to a certain angle, it will rotate to the desired position but then return to 0. The ...
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1answer
239 views

How to use map function

if(pin10==HIGH) val=analog.read (potpin); val=map(val,0,1023,0,180); servowrite(val); else val=map(0,1023,0,90); ...