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

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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
58 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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65 views

Trying to figure out what type of mechanism would work for this part I'm building

First time posting here, sorry wasn't too sure how to phrase my question. I had originally looked for a mechanical engineering stackexchange page but since none exists yet and the device will likely ...
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0answers
54 views

AC Linear Actuator Driver for Arduino

For experimental purposes I want to build a 1-axis Polar Tracker and use an Arduino as a PLC unit. As I know it's necessary to use an Opto-isolator to prevent high-voltage from affecting low-voltage ...
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0answers
59 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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0answers
57 views

2mm linear actuator (electromagnet, hydraulic, etc.)

I am currently trying to make an idea become a reality, but I do not have a background in the electrical engineering, I am in fact a Software engineer. I have been searching a lot for a 2mm x 2mm x ...
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3answers
63 views

Finding a Hydraulic Actuator to be controlled through a MCU [closed]

I'm researching potential actuators I can use on a project i'm doing. I'm designing a creeper (platform for rolling under vehicles) that can lift you up just like the operation of those hospital beds. ...
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1answer
73 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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78 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
70 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
164 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
105 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 ...
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2answers
260 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 ...
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1answer
142 views

What mechanic for opening the roof window of a Greenhouse [closed]

I'm asking myself what would be a cost effective mechanical unit for opening a 30x30cm pitched roof window in my greenhouse with my microcontroller STM32F4? At the moment the window still has a glass ...
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1answer
150 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
112 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: ...
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1answer
169 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
693 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
692 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
211 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
591 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
100 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
771 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
523 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
211 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
616 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
1k 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 ...
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2answers
245 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 ...
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3answers
785 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 ...
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3answers
6k 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 ...
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4answers
7k 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 ...
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4answers
2k 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 ...
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2answers
2k 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
153 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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470 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 ...
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3answers
1k views

Can I use a subwoofer as a linear actuator?

I need an actuator with a few mm of travel and it has to be very responsive to a very low frequency (DC 10 Hz) sine wave generated by a function generator. I'm thinking of getting a cheap subwoofer ...
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3answers
853 views

Automatic Button Pushing Device Hardware

I want to make a wrist mounted button pusher, connected to a timer that can be programmed with a routine to push buttons at specific times accurate to a millisecond. I've been told I could use a ...
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3answers
320 views

Controlling a mechanical shutter with an electromagnet

I'd like to drive a pair of mechanical shutter / apertures with an electromagnet. For those curious, we're using a shutter from Edmond optical. For the particular application, I'd like to design a ...
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9answers
5k views

hardware for pushing buttons

Many times I want my computer to interface old hardware. Such as radio, light switch, etc. This mostly involves pushing pressing and moving various buttons and switches. I don't want to buy new ...