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Questions tagged [robot]

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-4 votes
0 answers
61 views

Confusion regarding working procedure of AI robots? [closed]

Conventional robots are programmed using fixed and rule based approach like if-else programming in microcontroller boards like Arduino, and they can work even without internet. But what actually ...
DSP_CS's user avatar
  • 1,219
0 votes
0 answers
60 views

Can I connect 0V between 2x 24V Power supply in different devices?

Devices: Robot (24VDC 10A power source, used for an IPC, sensors, electronic boards, CAN communication, DI/DO etc) Mini automation (24VDC 10A power source but different brand, used for a mini Siemens ...
Sebastian's user avatar
0 votes
0 answers
30 views

3S LiPo Battery charging for Raspberry Pi robot project

The Project I have build a Raspberry Pi based robot with a RPi Camera to help me learn about computer vision and obstacle avoidance. It is powered from a 3S LiPo Battery that sends its power to a DC-...
SaltySparks's user avatar
4 votes
3 answers
109 views

Battery considerations for robot hardware

[please don't downvote, just let me know what infos are missing] I built my second robot and I always end up with the same issue ... The CPU board always resets when a high rush of current is demanded ...
phil's user avatar
  • 41
0 votes
1 answer
38 views

Power layout for robot from 42 V to multiple output voltages

Most real robots will need to provide different voltage levels, i.e 5 V for MCU, 12 V for actuators, 19 V for PC/NUC 24 V etc. They also need to monitor charging and discharging of batteries. I ...
Patrick Weber's user avatar
0 votes
1 answer
163 views

Can someone help me identify this chip on a robot vacuum?

It’s on a Rowenta Xplorer series 50, seems like it controls one of the wheel motors and it fried
Axton's user avatar
  • 1
1 vote
1 answer
244 views

Dynamic model of three dof to state space?

I´m trying to convert a 3 dof robot manipulator from dynamic model to state space. I saw a video where explains how to convert a 2 dof robot manipulator, but I don´t know how to apply it to a 3 dof ...
Rodrigo Barbosa's user avatar
1 vote
1 answer
68 views

Will running four motors (two high speed and two high torque) get the robot rolling? [closed]

I've been building a 2WD robot for 3 months now and been switching the motors frequently and been running into the same issue - low torque. I had these low RPM, high torque motors around and thought: ...
8TILMATE's user avatar
1 vote
1 answer
98 views

Is this design of a motor controller valid?

I am trying to design a compact robotic actuator. My main focus with this project is to reduce the amount of external wiring needed to do with robots. With that in mind, I have thought of the ...
ssarkar's user avatar
  • 113
-1 votes
1 answer
283 views

Maximum weight for robot arm - MG996R [closed]

I want to build a robot arm (see here) to move a dumbbell of 2 kg (roughly 2.2 lbs). However, since I have no background in engineering, I have no idea how to calculate / find out if the servos used (...
juliusphysics's user avatar
4 votes
2 answers
934 views

PID regulator for a self balancing robot

I am working on a self-balancing robot, trying to obtain the best values for the angle PID regulator. I have a working program, but I am stuck on the tuning part. The robot can hold position after ...
Crax's user avatar
  • 41
-1 votes
1 answer
54 views

How to do sound localisation for an Inmoov Robot

I have to do sound localisation for a humanoid robot. This is my final year project given by our sir but I have no idea how to do it can anyone help me
Vinay's user avatar
  • 1
0 votes
2 answers
173 views

Quasi Direct Drive Actuator - Slot & Pole Combinations for High Torque Motor

I am building my own Quasi Direct Drive actuator and looking for information/ design guidelines for building a High Torque Motor similar to the MIT Mini Cheetah below. Specifically I cannot seem to ...
SoloLeveling's user avatar
0 votes
1 answer
140 views

Does anyone recognize this chip? B9930 FLC5068

I can't find it. Does anyone recognize this logo?
βασιλης βασιλειου's user avatar
0 votes
1 answer
111 views

Problem with Motor Encoder - Arduino

I am having an issue with my motor control code. The aim of the code is to control a motor which has a built in encoder. Now, I wrote a simple test code that makes a user enter the value between 1-...
Neamus's user avatar
  • 281
2 votes
1 answer
295 views

Is my DC-motor strong enough to move this amount of weight?

I’m thinking about building a robot just with some old parts I have. The main thing is the motors. I have 2 DC Motors Specs below. (It’s a MFA975D Series with gear ratio 49:1) Operation range(Voltage):...
Christoffer Bodholdt's user avatar
0 votes
0 answers
63 views

Axis of Euler rotation matrix

I'm searching the way to measure rotational displacement by using Euler rotational matrix. And I could find various information about it. Then I've found something wrong with reference axis. In the ...
ssabassaba's user avatar
3 votes
1 answer
14k views

How to calculate the torque constant for a BLDC motor

I am designing a 12lb hobby robot with a 1000Kv BLDC motor at 14.8V nominal voltage and stall torque of 30A. How do I solve for the torque constant. I have seen equations where Kt(torque constant) = 1/...
mikesmion's user avatar
0 votes
0 answers
305 views

Controlling DC motor with an Arduino motor shield using PID

I'm currently trying to control a DC motor using an Arduino motor shield using PID control. I found this code that can control the motor and also give encoder values and I adapted it for my motor ...
Neamus's user avatar
  • 281
1 vote
1 answer
358 views

Servo motor speed and torque

From what I've read the speed is controlled based on the supplied power voltage, or using delay on arduino code, how about the torque, is there a way to make the servo motor change the torque ? like ...
Xakiru's user avatar
  • 111
4 votes
3 answers
1k views

How far can radio signal be transmitted through a straight steel pipe?

We are needing to transmit data between a robot that will be traversing a pipe, and a base station located at the end of the pipe. The pipe is about 2 feet in diameter, made of steel, and is ...
T James's user avatar
  • 165
0 votes
1 answer
36 views

Bluetooth not connecting error

I am making and robotic arm by using arduino and hc - 05 module and controlling that arm using mobile application now problem what i am facing is the mobile app dose not connect to bluetooth device ...
Muhammed's user avatar
0 votes
0 answers
33 views

Controlling 9 servos with a Bluno board

I'm trying to build a robot that requires 5 micro servos and 4 standard servos. The micro controller board I am using is a 'DFRobot Bluno' (compatible with Arduino software). The board gets power from ...
user255652's user avatar
1 vote
1 answer
72 views

How to effectively avoid current drops while stepping down the voltage?

We are using a PC power supply to power our project, which is a Robotic arm. Since our power supply has a 12V output voltage, can anyone please advise how to step down the voltage (12V) to 6V. Using ...
Talat Malik's user avatar
1 vote
1 answer
947 views

Brushless motor control poisition (design own PID?)

I got a few motor similar to the image below from a old scanner and I want to apply them in a robotic arm to move the arm because BLDC motors have a large torque I then control with arduino. Well, in ...
Bruno Pimenta's user avatar
0 votes
1 answer
33 views

What current rating should I be looking for on a Battery Management System?

I'm designing a power hungry robot and this is my first time constructing a battery pack. Specifically, I am going to use a 3(series) x4(parallel) 18650 battery pack using these Samsung 35E cells. The ...
michael2103's user avatar
1 vote
1 answer
326 views

Stepper Motors (NEMA-17) Won't Run When Wheels Are Attached

My team and I are creating a robot using 4 stepper motors with mecanum wheels and an Arduino Uno. The code appears to be correct, and the motors seem to run just fine on their own, but once we screw ...
cutelilcoder01001011's user avatar
-3 votes
1 answer
99 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 ...
Al Mahir Ahmed's user avatar
0 votes
1 answer
1k 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), ...
random_numbers's user avatar
0 votes
1 answer
73 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 ...
Archishmaan P's user avatar
0 votes
2 answers
120 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, ...
Tomas By's user avatar
  • 127
0 votes
1 answer
122 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 ...
M-R's user avatar
  • 789
-1 votes
1 answer
98 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 ...
Cobey Hollier's user avatar
-1 votes
1 answer
542 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 ...
AlaBek's user avatar
  • 1
0 votes
4 answers
2k 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: ...
rgrutko's user avatar
1 vote
0 answers
76 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....
Lester Narciso's user avatar
0 votes
1 answer
94 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 ...
user108391's user avatar
0 votes
1 answer
600 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 ...
Jonathan Kramer's user avatar
0 votes
1 answer
796 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 ...
Skipher's user avatar
  • 105
0 votes
1 answer
1k 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. ...
user6812514's user avatar
0 votes
2 answers
163 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 ...
Mu3's user avatar
  • 572
-1 votes
2 answers
769 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. ...
Jonathan Logan's user avatar
1 vote
2 answers
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 ...
ckong80's user avatar
  • 11
0 votes
1 answer
93 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 ...
Serge's user avatar
  • 29
3 votes
1 answer
596 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 ...
Enthurzan's user avatar
  • 321
0 votes
2 answers
1k 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 ...
gcb's user avatar
  • 113
0 votes
0 answers
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 ...
SimpleOne's user avatar
  • 109
1 vote
1 answer
2k 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). ...
Jaghvi Mehta's user avatar
0 votes
1 answer
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 ...
user45189's user avatar
2 votes
1 answer
6k 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 ...
Quark's user avatar
  • 21