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Questions tagged [robot]

The tag has no usage guidance.

-3
votes
1answer
76 views

What makes a microcontroller development board powerful?

I'm seeing an awful lot of dev boards on the internet that arent Raspberry Pis or Arduinos and I'd like to know what makes a board powerful? Whats the difference between a board that may be used in a ...
0
votes
1answer
77 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
1answer
40 views

2D Positioning Localization

I have a robot. My robot has three main sensors one is a gyro from which i can get my yaw, pitch, and roll. I also have an encoder in the x and y axis. How can I use these sensors together to reliably ...
0
votes
2answers
64 views

Max current per battery chemistry

From the background and responses to my other question I gather that 5 NiMH batteries can provide more than 4 A current, and that Alkaline or Manganese batteries cannot. So, what about LiPO, LiFePO4, ...
0
votes
0answers
80 views

Question Regarding connection a color sensor to Myiro I2C using Labview?

My school wants us to build a robot that would make use of a color sensor (see page 30 of this document). As I pull the myRIO I2C toolkit into the block diagram, I am having trouble matching the input/...
0
votes
1answer
59 views

Required velocity of each wheel in 3-wheel omni bot [closed]

I'm using a 3-wheeled omni bot which can move in any horizontal direction (example: https://www.robotshop.com/en/3wd-48mm-omni-wheel-mobile-robot.html). Given an object velocity (velocity at which ...
-1
votes
1answer
58 views

Creating Light Sensor [closed]

So the situation is like this, I have a project with a budget of $25. I have to build a robot that is capable of connecting a magnet to a tin can autonomously. I also have a vex kit which I can use ...
0
votes
1answer
242 views

Running 18 servo motors on a Hexapod

I am working on a hexapod robot that has 18 servo motors(HS-475HB). My problem is that when I use one servo, the current is about 0.7A at 6V (when moving the servo from its position), when I add ...
0
votes
4answers
110 views

Powering Multiple loads from a single 12v battery

I have built a 12v rover - designed to be fully autonomous with a 12v deep cell marine battery as its only power source. It uses the following components: ...
1
vote
0answers
66 views

Stepper motor torque requirements

I have a robot that has a load of 60kg and it has to move using 4 stepper motors. I saw from previous searches that the torque required by the motors to move is Force times the wheel radius. COF = 0....
0
votes
1answer
64 views

Will this N-Channel Mosfet work as high-current motor controller?

We are building a mobile robot which will use two motors in a differential drive configuration to maneuver and move around, and we want to choose the right driver IC or transistor circuit for the job ...
0
votes
1answer
194 views

Darlington Transistor Array Overheating and failure

I own some animatronic robots that use solenoid valves to operate their mechanical movements. Recently I created a pcb that uses three 8 channel Darlington Arrays ULN2803A to control the individual ...
0
votes
1answer
228 views

Can lack of current cause servo motors to burn out?

I am building a quadruped robot from 10 MG996R servo motors. I am powering them with 12 Eneloop AA batteries, but I am starting to see that I might be lacking current. The servo spec says that each ...
0
votes
1answer
495 views

Ethernet, RS485, CanOpen how to choose the right for robotic Arm

I have a question regarding the communication protocol and physical layer of how to connect the motors of a robotic arm. I have 4 servomotors, Brushless. I need to select a motor drive for each one. ...
0
votes
2answers
81 views

Battery selection for a robot

I am currently building a line-following robot for a competition this summer. I have figured out everything except the power. I expect my robot to draw 7.5 amps in the worst case. now, I've selected ...
0
votes
1answer
72 views

Sound localizing robot

currently working on a Hobbyist Electronic Project. I have just bought the Rover V2 robot. I have attached 3 microphones to the robot- Front, Left and Right Facing. I have written some basic code to ...
-1
votes
2answers
268 views

Does a circuit have to be run strictly on DC or AC? [closed]

Hi I know this might sound like dumb question but I've just ran into a problem on a design project. I have no real training or experience with EE or mechatronics and any help is greatly appreciation. ...
1
vote
2answers
2k views

Equalizing motors speed for balancing robot

I am currently working on a balancing robot project using Arduino Uno. I am able to get the robot to balance but one of its motor have the tendency to rotate more than the other. I am using the ...
0
votes
1answer
79 views

Sequential power circuit for 18 servos

I'm trying to design a servo control board to be a daughter card for DE0-NANO, but run into a problem where all the servos (18 for hexapod) get to the end position on power up. The initial idea was to ...
3
votes
1answer
497 views

Stepper vs servo or DC motor

My friend and I are currently working on a robotic vehicle project, and he had some spare steppers lying around from a previous project. Instead of using DC motors or servo motors, is it viably to use ...
0
votes
2answers
783 views

When to use PID for motor control?

I have a project involving a small robot and I need to write the firmware to control the wheels. Its not something I have done before, so I did some research. In my research I saw that some people use ...
0
votes
0answers
1k views

Brushed or Brushless DC motor for self balancing robot?

I am looking to balance a robot using a flywheel connected to a DC motor (think of it as an inverted flywheel pendulum). Similar to this: https://www.youtube.com/watch?v=0312BNqIBFI What I am unsure ...
0
votes
1answer
1k views

Why Roomba has IR bumper sensor array?

Roomba has two bumper sensors (left and right, this is what is mentioned almost everywhere), if pressed it recognizes obstacles. Then what is the need of the extra array of IR sensors(6 in number). ...
0
votes
1answer
2k views

outdoor ultra sound positioning system robotic lawn mower [duplicate]

I have a dream to build robotic lawn mower that uses a positioning system, so that can cut grass once and effective. Building the robotic lawn mower is not a problem, but the navigation system is, so ...
2
votes
1answer
4k views

Basic Robotics Help. Variable motor speed control by ultrasonic sensor input on arduino

First, thank you for taking the time to read my post. I am attempting to use an ultrasonic sensor to control a DC motor using the PWM output of an arduino. Fairly simple, I know, but I'm just a ...
-2
votes
0answers
80 views

control circuit of humanoid robot: is it worth to learn and use ROS

i am building the upper body of a humanoid robot for my MSc thesis project with 24 dc motors and multiple sensors(something like i-cub or Nao) i have basic knowledge of communication protocols and ...
1
vote
0answers
114 views

Reliable docking charging connector?

I am designing a mobile robot which needs to re-charge in a docking station, but I'm having difficulty deciding what to do about the connector. I have two choices: design and make our own connector, ...