Questions tagged [power]

In physics, power is the rate of doing work.

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19 views

Required motor torque for a small boat

What: We are building a small boat made of a special paper foam soaked in glue and epoxy. It is aproximinatley 40 cm long and 15 cm wide. Very light. We aim to transport a single can of beer at the ...
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18 views

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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1answer
64 views

Does anyone believe a high voltage battery say 100kV is possible? If so do you have a schematic or know a seller? [closed]

In the interest of soft robotics I need a high power programmable battery power supply. I also found this. https://aip.scitation.org/doi/pdf/10.1063/1.2362721
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34 views

Best way to power Raspberry Pi 4 8GB + Arduino Uno Robot?

I am building a robot that uses an arduino to drive 4 mecanum wheels, which will be controlled by a Raspberry pi 4 8GB with the Lobe Machine Learning Hat via a serial connection. I'm fine with having ...
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1answer
105 views

Stepper Motor: Direct Drive vs. Belt Drive vs. Geared Stepper Motor

I have built a juggling machine. Each arm is driven by a 4A 23mm stepper motor. The motors are each driven by a TB6600 set to 800 microsteps. By trial and error, I have found that the motors skip when ...
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53 views

Do hobby servos respond to step inputs with a step in torque?

I'm designing a piston that I need to expand a few cm in <100ms to load energy into a spring-mass system with around a pound of force (as shown below). Based on power specs alone, high-end hobby ...
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1answer
53 views

Motor driver damage and jerking behavior when load driving in same direction as motor

I'm having trouble with a gear motor being powered by a power supply, while it is being driven by the load in the same direction as the driver wants to drive it. Here is a simple diagram: The gear ...
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1answer
90 views

Power to Raspberry Pi and DC motors from a single USB power bank

I'm running a simple robot involving a Raspberry Pi 3 and 2 JGA25-370 motors. The system is powered from a single Powerbank (EasyAcc 10000MAh) which has 2 2A ports. DIY USB cable has data pins ...
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1answer
30 views

Output power of an actuator - General definition

I'm looking for a general definition of the output power of an actuator. Can you suggest me any book or paper or education website where I can find it please? Thank you in advance. EDIT I read the ...
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38 views

How to configure a DC power distribution bus

If you have a distributed system of DC motors, sensors and microcontrollers, is power usually distributed over a single high volt bus, using DC converters where needed? Or is it typical to implement ...
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2answers
156 views

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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86 views

problem of power on PIN 1 and PIN 2 of DIN connector of Roomba 521

I notice there is a problem of power on PIN 1 and PIN 2 of DIN connector of Roomba 521...I have only 0,5 V but it's expected 12V...motherboard damaged?
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113 views

Stepper Motor power supplies

Being new to the world of stepper motors, I have a Longs Stepper Motor 23HS9430 bought from eBay it's a 3.0 A 5 V motor. Although I have been reading about the supply voltage for the motor, ...
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77 views

High power jumping mechanism in small robots

I recently saw this video on YouTube featuring a jumping robot: 5 Fastest Robots In The World I was curious how this is accomplished mechanically? Do they wind a strong spring or use some sort of air ...
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3answers
273 views

How to create a stable 48V 10A power supply?

I'm shopping for batteries and it's easy to find a 48V lithium ion battery that has like 30A max continuous discharge rating. However, I know that the battery supply has a variable voltage from 54V - ...
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1answer
680 views

How to calculate power supply requirements for Closed Loop Stepper Motors?

I have a CNC Router table that has 4 Nema 23 stepper motor (open loop). I want to upgrade the machine and use 4 Neam 34 Closed Loop Steppers. These are the motors and drivers I'm considering: Steppers:...
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188 views

How to get constant motor RPM regardless of battery voltage?

I have a brushless motor with a propeller attached, driven by an ESC and a LiPo battery. I noticed that as the battery level drops, the motor spins slower, which makes sense. My question is is it ...
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1k views

How should I power my servo motor with the Adafruit PCA9685 chip?

So I have an Adafruit pca9685 controlling an HSB-9380TH servo and a MG-996R servo. I recently began learning about building robot so I apologize if these questions seem dumb. I literally spent a days ...
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1answer
111 views

Powering servos for quadruped spiderbot using arduino uno [closed]

I am using 12 towerpro SG90 servos. What battery should I use for powering 12 servos for my arduino uno? Can i use the 12v battery, plug it in to 12v dc jack of arduino and tap the 5v output of ...
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210 views

What is the best way to power source small Robot

I am trying to make a small robot with 4 12 v DC Motor + Raspberry PI + camera possibly a USB camera. I am very confused with power source. Is it possible to get all of them powered by a single power ...
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3answers
200 views

Powering multicopter with multiple dedicated batteries

I am in the starting phase of building a fairly large octo-copter drone. I am currently thinking about the possibility of powering my octo-copter design using 4 separate batteries where each battery ...
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1answer
35 views

Power delivery issue for our human following robot project

We are very new in the game of robotics and we are dealing with a power delivery issue for our motors. We are using two 12V DC motors to give motion to our robot. We are using the L293D motor driver ...
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109 views

PixHawk I/II not working in 'Rover' mode (firmware issue?).... HELP!

We are working in a new agricultural rover, and we opted for PixHaw-II+ROS+MavLink platform as a good control alternative. However, our project is stuck as the PixHawk seems to work only when it is ...
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2answers
112 views

Are robot's codes usually compiled or interpreted?

I would bet that usually these are compiled for better performance, and of lawful reasons (make it harder for any user to save code without decompiling), though I'm not sure. In any case, I believe ...
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29 views

Powering a robot using the 12v adapter

Hello every one hope you all alrigt I am working on a mecanum wheel robot and now I am facing a problem to afford a lipo battery which the required voltage to power my robot is 12 So I think that I ...
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1answer
79 views

What battery capacity would be required to run a component for an hour?

I have a 9.8kW Component that runs at 51.8 Volts. That means I need a battery that has about 9.8kWh of energy to run the component for an hour For the sake of simplicity, say I have some batteries ...
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1answer
52 views

Will this have more or less lifting strength

Bit of an engineering question. If a snake robot is 100 cm long, and every 10 cm is another motor. Would the robot lift more weight, the longer/more motors attached to it.. or is lifting ability ...
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3answers
4k views

Supplying power from a power bank to an arduino and DC Motors

I have a two port powerbank capable of supplying a maximum of 5V 2.1A I'm using it to power an Arduino and a L293D IC connected to two DC motors which have the following specifications: Working ...
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2answers
325 views

Can high voltage power lines provide a super highway for drones?

Is there a way to convert the EM field that surrounds high voltage power lines for direct usable electricity for air or ground drones for continuous flight or travel? Added: Yes could the EM field be ...
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1answer
33 views

2 way Switch powerbar [closed]

For some important reasons the plugged cable 1 must not be on at the same time as the the plugged cable 2. It must be idiot proof... I'm talking about regular house power north america. What is the ...
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1answer
82 views

How to power this servomotor?

I would like to use and test this type of servo motor, significantly stronger than the ones I've been using previously. However the datasheets seem to be limited and I can't exactly tell how to use ...
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1answer
906 views

How are huge industrial robots powered?

Take a look at this monster lifting a car. Now I don't think one can get that power by plugging into a wall outlet. So how are these huge robots (their servos) powered? Gasoline? How is power stored, ...
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1answer
112 views

Switching from wall power to battery and back again

I'm in the final phase of my BeerBot* project, and I'm looking for the best way to power it. BeerBot will spend most of his life sitting in a docking station, keeping his battery charged and running ...
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3answers
1k views

Power solution for Raspberry Pi robot

I am building a Pi car with 4 gear motors (190-250mAh each max). Now I want to use my 10000mAh USB power bank to power up raspberry pi along with the 4 gear motors. I can power up the raspberry pi ...
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2answers
60 views

Running a cycle on brushless outrunner motors? [closed]

Is it possible to convert a cycle into an electric bike by using brushless outrunner motors that usually are for RC planes, multicopter, helicopter, etc? If it is possible, what specs do my motors ...
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4answers
1k views

Is it possible to use a LiPo charger as a lab bench power supply?

I recently thought about building a lab bench power supply, it comes in cheaper and I love to build things... But then I also have a LiPo charger an iMax B6AC, that I had bought for my quadcopter, ...
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1answer
154 views

Measure 2 diffrent battery voltages on arduino

Is it possible to measure the voltage of 2 different batteries on arduino? Currently I am able to use a resistor divider / voltage divider of 2x 10K resistors to an analog pin to read the voltage of ...
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3answers
4k views

Is horsepower related to torque in electric motors? [closed]

Is torque related to size or power at all in electric motors? And what about gas motors too? I have a go kart that is 2.5hp and it's 50cc and its about 1ft x 2ft x 1ft in size. I also see online ...
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1answer
47 views

How can I charge a 11,1 volt LiPo akku?

I didn't found any modules to charge my 11,1 volt LiPo akku, only for 3,7 volt with 5 volt power supply. How can I handle that with a micro-USB connector on my robotplatform?
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767 views

Can we simulate a actuator with a very strong torque with a PID controller

I use gazebo to simulate a robot arm. To control its joints, I use PID controllers. As you might know, PID are sometimes pretty hard to tune and this is the case for a robotic arm. To avoid any tuning,...
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2answers
327 views

How to decide the battery power for my robot

I need my motor to be powered with 12V, 5A for 1 hour continuously. How can i decide the Ah rate of the battery. Please suggest some lithium ion battery for the specification
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2answers
76 views

Mobile phone power packs

For my robotics project I would like to utilise readily available mobile phone 'power banks' to simplify the power system for my robot. However, such power banks output 5V, great for the logic systems ...
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1answer
96 views

Solar Cells Charging a Li-Po Battery [duplicate]

Is there a way to charge a Li-Po battery using solar panels to increase the flight time of a quadcopter during its flight?
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1answer
73 views

Erratic motor behavior. Is it due to the faulty remote control or Grounding or something else?

I am using arduino mega to run 4 motors via 4 motor controllers. I am using a ps2 controller as the remote control. When the joystick is at rest, the motor should stop. The problem is the motor still ...
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4answers
37k views

Does the mAh of a battery mean longer power or more power?

If a Lipo battery has more mAh will it be slower to run out of energy or will it have larger power output? Thanks in Advance
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3answers
406 views

Best power solution for my robot

I've built quadruped robot which is using 12 servos (TowerPro SG90 Servo) and Raspberry Pi (model B 1). Right now I'm "feeding" it with 5V 2.5A charger. How can I make it un-tethered? What should I ...
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0answers
123 views

increase current draw from serial port of icreate 2

This is from the icreate 2's document: "Pins 1 and 2 (Vpwr) are connected to the Roomba battery through a 200 mA PTC resettable fuse. The continuous draw from these two pins together should not exceed ...
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1answer
84 views

Arduino Power Adapters

I'm shopping for my first Arduino with a specific goal in mind. I need to attach 3 standard servo motors, an ArduCam Mini 2MP camera, and several LEDs. I'm trying to figure out power requirements. I ...
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2answers
93 views

Powering 6 servomotors requiring 6V and 2A each

The title pretty much says it all. I'm on a team that is currently building a robotic arm for the capstone project of my engineering degree, our design is similar to the Dobot (5 degrees of freedom). ...
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1answer
43 views

Sizing high current power supplies for large robots

I'm a researcher in a lab that's starting work on some larger humanoid/quadruped robots as well as a quadcopter. Currently, we have several power supplies that have a max rating of 30V/30A and our ...