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Unanswered Questions

110 questions with no upvoted or accepted answers
0 votes
1 answer
219 views

Powering SG90 Servo with 18650 battery

I want to power one SG90 servo with an 18650 3.7v battery. Since the working range for the servo is 4.8v-6v, I used XL6009 boost converter and got a 5.8v output. I have measured it with my multimeter. ...
-1 votes
1 answer
128 views

Unable to find PCA9685 module when using the I2CScanner library: no servo movement

I am trying to use an Adafruit PCA9685 servo driver module with an ELEGOO Mega 2560 board. I am supplying the servo driver board with 5 V and tested all the wires to make sure. I tested the servo ...
0 votes
0 answers
367 views

PCA9685 servo not working

I am working on a project where I want to connect 12 servos together. I got: Arduino Nano Every PCA9685 16-channel, 12-bit PWM/servo shield Power supply 5 V, 10 A I got a PCA9685 16-channel, 12-bit ...
-1 votes
1 answer
474 views

Why won't my servo and ultrasonic sensor work together?

I have a school project due tomorrow, and I'm planning to connect a servo motor with an ultrasonic sensor. If the distance is under 10cm, the servo motor should turn 180 degrees and will return to 0 ...
2 votes
0 answers
52 views

I am trying to control 4 servos with a joystick, but after a few seconds, they start spinning and don't stop until the power source is cut

Here's my code. I don't know if the issue is the power source though. I only have access to my computer for a power source. #include <Servo.h> Servo servo1; Servo servo2; Servo servo3; Servo ...
2 votes
0 answers
207 views

ESP & Servo not communicating well

I have a mystery I was unable to solve and would greatly appreciate it if anyone could shed some light on this. I have a servo DSS-M15S 270 which I managed to run perfectly fine with Arduino Uno (code ...
1 vote
0 answers
86 views

Unable to use RF M4 Receiver with servo motor

I am trying to control a servo motor with the following code: #include <Servo.h> Servo servo; int const inputPin = 3; void setup() { Serial.begin(9600); servo.attach(9); pinMode(...
1 vote
0 answers
59 views

Simulink Legacy Code Tool - custom Arduino servo write block problem

I'm trying to create my own servo.write block in Simulink for Arduino DUE deployment (and External Mode). Before you ask why if there is one available inside the Simulink Arduino Support Package, ...
1 vote
0 answers
39 views

Problem regarding on HC-SR04 sonar with an additional stepper and SG90 servo motor

I'm making a project based on HC-SR04 ultrasonic sensor with a stepper motor and an SG90 servo motor. I have done some conditions for my stepper motor that is given below. Now I want to include my ...
3 votes
0 answers
608 views

PCA9685 - Hardware problem with diode?

I'm working on a project, where I need to run several high-torque servos. For that I bought come of these PCA9685 boards. I hooked everything up with my arduino and connected an external 5V - max 3A ...
1 vote
0 answers
31 views

servos act strangely instead of stopping/starting

I am trying to make it so that my robot rolls straight when pin 8 is high and stop when pin 8 is low, the 2 servos is constant rotation servos. instead the servos spin when the wire touches it pin ...
1 vote
0 answers
694 views

Arduino UNO and PCA9685 - Problem with external power supply

I am totally desperate and hope you can help me. I've been building a project for a while where I have to control several servos. For this I bought some MG996R servos and a PCA9685 16-Channel Servo ...
1 vote
0 answers
355 views

Arduino and PCA9685 - Suddenly stopped working

I'm using an Arduino Uno and a PCA9685 board to run 4 servos (of type MG996R). For that, I set up the following connections: SCL -> SCL SDA -> SDA Ground -> GT VCC -> 3.3V As the servos ...
2 votes
0 answers
179 views

Simulink resets arduino

I am working on servo motors control through serial communication protocol, I am sending data from Simulink to arduino and vice versa, The problem I am getting is that once I open Simulink Servo ...
1 vote
0 answers
94 views

What external battery do I need?

For a school project I need to connect an Arduino with an accelerometer gyroscope sensor and 2 mini servo motors. Of course I need a battery for this. However, I don’t know what battery I need for ...

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