An actuator is a device for converting energy into motion. They may be pneumatic, hydraulic, electric, or mechanical.

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Are electric linear solenoids the best option to push a capacitive screen button on a smartphone? [closed]

I'm trying to figure out if electric linear solenoids are the best option to activate an interface element on the touch screen of my smart phone. I have also heard of linear actuators and pneumatics ...
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3answers
82 views

Should I wire my electrical actuators in series, parallel or a combination of both?

I'm working on a project that requires four (4) electrical linear actuators to work together. They must be driven at the same speed, simultaneously. Let's assume that I have four identical actuators ...
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0answers
52 views

DC Linear actuator holding force

I want to control pressing force of DC linear actuator (cheap one from Ebay). I planed to do it with force sensor (closed loop, current control). Imagine actuator pushing into a spring. Those ...
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1answer
88 views

Vibrating bracelet controlled from cell phone [closed]

I was inspired by this project: How do I build a bracelet that vibrates once every n minutes? but I want to take it a step further. The main idea is creating a vibrating bracelet that is controlled ...
2
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1answer
109 views

Does this brake control schematic make sense?

I am participating in a student project where we are building small, portable vehicles, starting with a pocket bike and some materials. We are also allowed to buy parts on our own. Our current plan ...
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1answer
32 views

linear actuator internal resistors

I have been trying for nearly a week now to try and build a mechanically locking box. I thought I could try using a linear actuator to do this, so I found a model I liked. My question is as follows: ...
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2answers
54 views

Micron-Scale Linear Actuation

I don't know a lot about linear actuation, but I need a precise device that I can control easily (using some kind of hobby board) that is able to perform linear positioning with a resolution of at ...
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3answers
101 views

Powering and operating dual electric linear actuators

I am in the process of building a height-adjusting desk. I am pretty good with computers (I'm a programmer), but I never learned much in the way of electrical engineering. I recently purchased two ...
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2answers
187 views

Linear actuator torque control

I want to build aplication where I will provide defined force with linear actuator. DC motor is going to be stalled most of the time and and controlled torque should be applied. So at the actuator ...
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2answers
127 views

push/pull extending rod

Will start off by saying I know very little about electrical engineering :/ so I basically need to make some sort of push/pull extending rod it Doesn't have to be particularly strong, just needs to ...
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1answer
120 views

controlling vibration frequency and amplitude of a motor

I want to build a hardware circuit that can control the frequency and amplitude of motors. I have a few questions about this. 1) What kind of actuator do I need to use? I have used ERM motors and the ...
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0answers
67 views

Ways to control multiple linear actuators seperately?

I intend to control multiple linear actuators at the same time (20+). These actuators need ~9V each to run, and I simply want them to either be on (pulling) or off (relaxed). Each actuator is to be ...
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1answer
558 views

What is the difference between push and pull solenoid? [duplicate]

I want a solenoid that stays retracted and propels forward when current is passed through it. Is there a solenoid that does this? What is the difference between push and pull solenoid?
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2answers
428 views

Many small and cheap linear actuators [closed]

Me and my friends are trying to build a linear actuator matrix. It's supposed to be a grid of pins that go up and down at reasonably fast speed (more than 1cm/s, the faster the better). Problem is, ...
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2answers
889 views

How To Interpret PID Output in a Slow Response System

@Update: A few days have passed since I asked this question and I've had a chance to do some research based on the answers I've received from @R Drast and @Spehro. I'm not sure this update is the ...
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2answers
76 views

Rudder and Main Sail control

I'm creating an autonomous sailing boat and just looking into how to control the sail and rudder. The electronics will be low powered with the main brain being an Arduino. My problem is thinking of ...
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1answer
65 views

Electronic Number Lock - Digital Electronic Systems [closed]

I've been set a Uni assignment to design an electronic number lock using a Keypad, an Electronic Control Unit and an Electromechanical Locking Actuator. It's to be based on a 4-bit binary codeword. ...
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2answers
99 views

Electronic/electrical actuator that HOLDS its position if power is lost?

Is there any sort of electronic/electrical actuator that HOLDS its position if power is lost? I am working on a project for a clutch actuator in an AWD system. One of the required tasks is to ...
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2answers
157 views

Using a solenoid to open a door

I'm trying to rig up my door to be unlockable using RFID and an Arduino. The problem is the actual mechanics of unlocking the door. There's a few limitations: I can't actually unlock the door. It's ...
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1answer
234 views

Relay circuit for circulator pump and actuators

I need help designing/wiring a circuit for thermostatic relays, which control electrothermic actuators. Basically I have 4 actuators and thermostatic relays, which pretty much is just a 12vDC JQX-...
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1answer
136 views

L298N Module Out 1 and Out 2 failure

I have an L298N motor controller module, rated at 5 amps. I'm using it to control two 12 volts linear actuators, and I'm using a current sensor per motor to learn when the motors have reached a high ...
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2answers
265 views

Solenoid Fail - No Force

I have designed and built a small solenoid and... it doesn't exert any force on the steel bolt I am using as a plunger. I could freely move the plunger back and forth without any resistance. I am ...
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0answers
357 views

Help need controlling linear actuators on my car project

Looking for some electronics guru who can help with my car project. Personally, my skill level/experience is below novice. I have an ISIS system controlling the car electronics, including two of ...
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1answer
220 views

Alternative to Linear Actuators or Linear Actuators with small load limit and 70cm movement [closed]

Are there any Alternative to Linear Actuators which are not as expensive ? OR Linear Actuators with small load limit (about 20Kg) and 70cm movement ? Thanks and sorry if this was posted in ...
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3answers
241 views

Automating a Fluid Dispenser with an Arduino

I would like to automate a process which will require applying force to the plunger of a 5ml syringe to dispense fluid at about 10ul per second onto a 25 mm by 75mm surface and I am thinking of using ...
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1answer
185 views

Wireless DC Motor & Linear Actuator Control

These are the 2 items that I have: 24V 110RPM 1Amp DC Motor. 24V 100mm Linear Actuator. First Question: To run the DC Motor I am thinking of getting this 24V 2A power supply in the hope that both ...
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1answer
382 views

Control of electric actuators

I'm new to this forum and I am trying to find a solution to control three small electric linear actuators I have made for my RC controlled model aircraft, they have mini 6 volt geared brushed DC ...
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4answers
149 views

Dosage control through flow meter and valve

I am trying to make a drinks machine that when a button is pressed, a predetermined amount of liquid (not determined by time) is allowed through a solenoid or other valve, and measured by a flow meter....
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2answers
460 views

Ideas for precisely moving a small object in 2 dimensions?

We would like to precisely control the position of a small object in a X-Y plane. The object we are moving contains a LED diode and some optics. The restrictions are: The total area is 9mm x 6mm We'...
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1answer
569 views

how to, best way to use a linear actuator vs gear system? [closed]

I am wondering what is the best and cheap option to use in a crane like system. a linear actuator or a gear rig system with an engine. the weight at the end could be up to 100 pounds. I was ...
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3answers
160 views

Finding a small, low-actuation pushbutton

I'm looking for a small kind of pushbutton that I'm not even sure exists. I want it to have these properties: ...
2
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1answer
508 views

Driving a DVD-ROM lens actuator

I have a spare laser diode lying around not being used. The other day I had an idea that it would be cool to have it draw the time on the wall for me as a laser wall clock. In order to do that, I'd ...
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2answers
2k views

Robotic button pusher [closed]

I purchased a Gigapan Epic Pro a while back (www.gigapan.com). I love this device but I would like to be able to access the buttons on it, from a distance. (I want to mount the unit on top of a ...
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3answers
2k views

Cheap linear actuator recommendations? [closed]

I've been doing a lot of research into linear actuators, and have come up pretty much empty handed in finding any small sized (lifting force 10-30 newtons) linear actuators for a doable price (30-50 ...
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1answer
246 views

Are there electronic devices that can be used to replace hydraulic cylinders with short strokes

We use hydraulic cylinders in many applications to release brakes and clamp things. The choice of hydraulics is based on them being strong relative to their size. There are a couple of downsides with ...
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2answers
1k views

Switching 24V and GND with MOSFETs

I need to control motion direction of linear actuator. It works off of 24V power supply, and if i switch polarity of supply it goes to opposite direction. The supply for actuator is simple DC with no ...
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2answers
108 views

What part/actuator do you think they used

At around 2:20 in this video there is an interesting use of electronics. You can watch the video but in short there are these little spoon creatures that pop out from behind a covering. The speed at ...
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4answers
2k views

Methods to accurately move an object across a 2-D plane

This is the opposite/complement of my previous question, which concerned measuring the precise position of an object as it is moved/drawn by someone over a short duration. Assuming I use one of @...
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3answers
848 views

Energy conversion from Electrical to Mechanical

I have a requirement where I have to design a very small device capable of pulling in and out a small piston through a feedback.I know it can be done using motor but AFAIK I need higher voltage and ...
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2answers
404 views

Playing back recorded movements with servos

I'm new to motors/servos so could do with a bit of advice. I'm currently working with 3 Dynamixel servos and it's cool that they can be programmed fairly easily and I can get the current position when ...
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1answer
2k views

Looking for linear solenoid actuators less than 2 cm in length [closed]

Do such parts exist? Are they cheap? I want to take a sheet of plastic and cover both sides with solenoids, some aligned in the X direction and some aligned in the Y direction. With at least a ...
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3answers
2k views

Muscle wire considerations

I am in the planning stages of a project for my new son/daughter, who will be arriving in December. The project involves using muscle wire to make bug or bird slowly flap it's wings. The form will be ...
9
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2answers
284 views

Sensors that are also actuators?

this is more of a theoretical question, and I do not know if this is suited for this QA site at all, but at school I was asked to provide 3 examples of sensors (in the narrow sense) that are also ...
3
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3answers
1k views

Selecting small motor (wrist watch sized)

I want to build a skydiving altimeter, which is a device with a pointer that looks like and is slightly bigger than a wrist watch. In this device I want to display altitude information using a pointer,...
4
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3answers
11k views

Where can I get a small cheap linear actuator?

First, I should clarify: I am not looking for much power or much precision. I am looking for the cheapest thing I can plug into an arduino. I am just looking for stuff I can use for prototyping/proof-...
8
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4answers
12k views

How do I build a bracelet that vibrates once every n minutes?

I intend to establish a few new personal habits that eventually become second-nature to me. To assist myself, I want to wear a bracelet that vibrates every, say, 5 minutes all throughout the day as a ...
2
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4answers
3k views

Can a Computer Motherboard Speaker/Buzzer output voltage switch a relay?

Most 12v relays I've come across require 4v to switch on. I don't have a voltmeter handy to test my computer motherboards voltage output, and if it did give out +4v and held a long enough duration ...
2
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2answers
3k views

Driving hard drive voice coil actuator with PWM

I have been trying to control a voice coil actuator with PWM input, but i have the following problems and would like you to correct or point me in new directions. I have an arduino which outputs PWM ...
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1answer
174 views

Recommendation of actuator

I had posted about my project earlier in this forum: PID algorithm implementation using computer vision Now I am currently stuck in a stage whether I am concerned whether I chose the wrong actuator. ...
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697 views

what would be the most suitable components to replace some relays?

I'm working on an electronic product based on a microcontroller that must be able to control a series of actuators: 230V AC motors ON/OFF, 24V DC motors ON/OFF, 80V/20A heating element ON/OFF. The ...