Questions tagged [brushless-motor]

Brushless motor is kind of DC motor. It is also called BLDC Motors (Brush-Less Direct Current Motors).

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How to design a representative drive cycle based on speed, acceleration, and torque requirements?

I recently came across the topic of "drive cycle design". I would like to learn more about this as I delve into motor and RC vehicle design. Given: the RC vehicle must achieve 25mph max/...
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DRV8833 Motor driver connected to four raspberrypi zero V1.3 GPIO pins causes motor movement to fluctuate despite setting all pins to OFF

I have a raspberrypi zero V1.3 which I connected to multiple DRV8833 motor drivers. the DRV8833 chip is a motor driver that allows bidirectional movement of brushless motors by setting the two pins ...
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Electric scooter motor

Can a 240w motor comfortably drive an electric scooter weighing net 56kg (gross weight c120kg) at 45km/hr? I don’t get clear answers when I ask dealerships about why one advertised scooter has a motor ...
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1 answer
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Q: Motor sizing for reeling application

I would like to ask for some help. My application is regulation of vertical speed of the camera, which is mounted on winding/unwinding reel. The camera follows the object (which moves vertically). The ...
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Vex Robotics- Falcon 500

I need two motors powerful enough to accelerate a 200 lbs robot at 10 ft/s^2. From doing the calculations, I know I am looking for a two 430 watt motors. I found the Falcon 500 motor on vex robotics ...
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1 answer
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How to avoid oscillations caused by backlash in position control?

I am working with a ball screw mechanism driven by a brushless dc motor with an encoder mounted on the load side. We are using a PID position controller with tuning settings by optimization however ...
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Efficient control for BLDC 3-phase motor with BEMF using Arduino (Atmega328pb)

Working on developing efficient code for driving a BLDC 3-phase motor with BEMF feedback using Atmega328pb, The code is based (as a starting point) on this tutorial: Link The basic understanding is to ...
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1 answer
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How much weight can this DC motor carry?

I'm trying to make a RC Car with a total weight around 1kg. It will be 4-wheel drive with differential drive algorithm. The count of motors will be 4 DC motors simply. I have chosen the following ...
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Building a wired remote control car using a raspi and drone motors

I have a small raspi controlled remote control car using regular drone motors such as these ones and tried using this 60w power supply unit that can be downregulated to 3v and connected everything ...
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How to control ESC from Arduino?

I have an Arduino Uno, 9 volt battery, ESC and a brushless outrunner motor. When connecting the motor straight to the battery the motor rotates once which is good but when using my Arduino code to ...
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Is it possible to control the speed of a hoverboard motor[BLDC motor] with a raspberry pi? If so, how?

In my project, I'm making a robot using two hover board motors, a motor control board such as this one: https://www.ebay.com/p/2242827374?iid=162674407600 and a raspberry pi. I've connected the motor ...
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wheeled vehicle forward velocity from RPM brushless data

I'm trying to hack an electric RC car with the goal to make it autonomous, as part of my PhD research. The mounted ESC is able to send back telemetry data, including the spinning velocity (in RPM) of ...
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Is it uncommon to use a gearbox with a brushless motor?

I've spent far too long this evening researching whether it's possible to clone a Starship; for my own amusement and/or to terrorise the neighbourhood. A Starship delivery robot, that is, not the ...
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Gimbal motor shaft

Does anyone know if a shaft can be pressed into a gimbal motor like this? Is the centre metal ring just the inner race of a ball bearing? The ring looks thicker on one side but thinner on another ...
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1 answer
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Do mobile robots use variable transmissions?

I've built a simple robot that can move. I'm using brushless motors. I've realized that at slow speeds the motors pull a lot of current. I didn't understand the power / current / efficiency charts ...
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Can I use 3 blades instead of 2 blades with the same pitch and dia to increase the thrust of my motor?

Can I use 3 blades instead of 2 blades with the same pitch and dia to increase the thrust of my motor? Will it burn my motor? or it will damage my ESC? Some motors are having high torque but low rpm, ...
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How should i select motor and blades for my Hexacopter?

I'm designing a fluid sprayer Drone (HEXACOPTER) for Agriculture as my college final year project. The capacity of the fluid spraying unit including fluid & Sprayer around 2kg. I don't know how to ...
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4 wheeled differential wheeled (skid-steer) robot steering problem

My question is about a square shaped differential wheeled robot, I built, that has a hub-motor (BLDC motor) attached to each corner, i.e., the wheels on the same side, either left or right, have the ...
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Calculate ticks with three encoders?

I have a question regarding calculating the ticks in a sensored BLDC. The BLDC has three hall effect sensors with slightly differing phasing and there are 30 magnets in 360 degrees of wheel rotation. ...
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4 answers
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Automatic forward and reverse Brushless Motor

The video Here shows a motor using rotational motion to move a load forward and then reverse back, without manually switching it to reverse. How can I program my brushless motor to operate like the ...
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Are all drone propellers compatible with all brushless motors?

I want to build a drone using these motors SunnySky X2212 KV1400 Brushless Motor For RC Drone FPV Racing Multi Rotor and these propellers DYNAM 2X RC Model Airplanes 9x5 Inch Nylon Propellers ...
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2 answers
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Am I calculating my drone's power consumption right?

I want to make an drone with these motors: https://www.amazon.com/XtremeAmazing-2200KV-Brushless-2212-6-helicopter/dp/B01M3UBGU9 1: First of all, are they good? If not, could you suggest me other ...
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What control circuit element will control an ESC while doing bench testing?

While doing bench testing of motor and prop combinations what simple device would I use in the circuit to properly control the ESC for the full range of power from 0% to 100% ? I have seen a few ...
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Quadcopter motors not spinning

I made a quadcopter with an Arduino and all connections are fine. When I arm it, the motors spin without props but when I connect the props and arm it, the motors spin for a second and stop. Can ...
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Why are brushless servos more common than steppers in Cobots?

Essentially every cobot I've worked with uses BLDCs instead of stepper motors in the joints. When searching for answers as to why I see a lot of posts that suggest one or the other, but nothing ...
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Electronic Speed Controller

What should be the specification of ESC that I should use for a 320KV 1820W brushless DC Motor?. Is it necessary to use an 80A ESC?, Basically, How can I choose the required ESC for a motor?
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Esc calibration

I want to make a calibration setup for BLDC ESC in the simulink model. I'm using arduino mega (3,9,10,11 pins) and quatro 30Ax4 esc. Normally I can set it to it's max, min, and incrementally increase/...
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Vertically moving robot

I want to build a 4WD robot that can travel vertically by pushing against opposite rails. The wheels push against the rails and generate friction, the robot moves upwards as the wheels rotate. This is ...
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State Space Model of Brushless DC

I am working on a project in which I want to use State Feedback Control to position control a BLDC motor in combination with a motor controller. I want to do this since translating time domain ...
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DJI E310 Thrust Coefficient

I am reading Denis M. Filatov et al.'s paper "Parameters identification of thrust generation subsystem for small unmanned aerial vehicles" (https://www.semanticscholar.org/paper/Parameters-...
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Doing a project for college for a manned drone theortically only

Weight of the Drone in total will be 240 Kg. It Will be a quad copter drone setup but with 8 rotors(two on each corner) for redundancy purpose. Aim is achieve Thrust/weight ratio of 2. So need total ...
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brushless motor as a servo

I would like to use(or control) a gimbal brushless motor like a servo meaning I want to control position not rotation speed. The position must be from 0 to 180 and 0 to -180 I will use an Arduino ...
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How does one setup an ESC to drive a wheel-hub motor?

I have 2x 350W wheel-hub motors taken from a self-balancing scooter, or hoverboard. My intention is to use the two of them to drive a homemade R2-D2. However, some difficulties have been encountered ...
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-1 votes
2 answers
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DC geared Motor 20 NM 25 RPM small dimensions. [closed]

My application requires a DC geared motor with torque of 10 NM - 20 NM and low speed (25 RPM at most) and a small dimensions (120 mm length at most). I failed to find my specs at eBay, and Alibaba ...
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Using brushless motors for very high torque

I'm currently building an robotic arm and I want the elbow joint to be comparable to a human one But here's the problem, electric linear actuators are too slow and have low torque, same goes with ...
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3 answers
1k views

Is a larger Kv equivalent to more voltage?

I've been a fan of first person view drone Racing for years now and, in thinking of building a new quadcopter, I have a question I'm unable to resolve myself. Please correct me if I'm wrong: As i ...
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1 answer
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What is the typical weight distribution for a brushless motor?

Brushless motors, like regular motors, have different parts (commutator, stater, etc). What do these various parts weigh?
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Why the bldc motor not able to move my water boat?

I have a 1100kv brushless motor from dys with a propeller as shown. I have attached this motor to two pvc pipes joined together as shown and packed the electronics inside polyform to protect from ...
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Confirm my understanding on BLDC motors

This question assumes an ideal system with 100% efficiency. Lets say I have this propeller which if spun at 1000 RPM in water will need a 48 Watt motor to drive it. So I get a 1000 Kv 16V motor and ...
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657 views

Motor for DIY Electric skateboard

I've been planning to make an electric skateboard for a while now. All the tutorials that I have seen use brushless motors. However, where I live, its not possible to get the exact ones as shown in ...
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1 answer
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Brushless DC motor problems at high velocities

For a project we use a brushless DC (BLDC) motor. Everything works fine until we tried to reach high velocities. I will first explain my setup, and than explain our problems using some graphs. 1.0 ...
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Explanation of Quadcopter Dynamics, Components and Control

I am about to build my own quadcopter from scratch. However i am having problem with understanding how it is possible to control the quadcopter without knowing the current rpm of the BLDC motors. ...
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Driving sensorless three phase BLDC motor with Arduino and IMU

I have started to work on a little project of mines, which consists in implementing the stabilization a single axis gimbal using Arduino. The gimbal is driven by a sensorless three phase brushless DC ...
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2 answers
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What are some ways to estimate torque/load on a robotic arm joint

My main problem is measuring joint torque/load economically. There are ways to detect the electric current drawn which is proportional to the torque. Since my motor is a BLDC motor, there will be a ...
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Mounting a gimbal BLDC motor [closed]

I'm trying to build my own motorised camera gimbal using a BLDC like this, where the shaft is hollow. Does anyone know how the camera platform should be mounted? Should a shaft be somehow pressed into ...
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Bldc motors erratic behavior with Arduino program

I've been making my own quadcopter flight controller using Arduino Mega. This is the sample code I wrote in order to test the esc timers and motors: ...
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How to find Friction or Viscous force b (nmsec) in DC motor

PLease guide me How to find Friction or Viscous force b (nmsec) in DC motor for a particlar speed. The motor is connected with a gear and the ration is 26:1 I want to find for 200 rpm and the motor ...
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Brushless motor from RC car won't spin with even small resistance

I recently bought a RC car kit and after 10 minutes it stopped going. When I throttle, I can see the motor trying to spin but it will just grind and get hot quite fast. The motor does move if I ...
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Motor upgrade to higher torque?

I have assembled a 4WD car using kits I bought on ebay. I have 4 motors similar to this one: . The description says: Operating voltage: 3V~12VDC (recommended operating voltage of about 6 to ...
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Why does the ESC stop?

I've built a quadcopter with four brushless motors and ESCs (30A). I'm using an Arduino to control them. I haven't written any complex code; just enough to get them running. Everything is fine until I ...
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