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Search for solenoid in Topics


HI, I would like to know if there is a solenoid that will retract when power in one direction is applied to it and when the current is reversed, the solenoid sticks out again. THANX VERY MUCH IN ADVANCE, i look forward to reading your answer. Ahmad

Question by in06khattab    |  last reply


Im trying to make a airsoft  gun with a solenoid. but im having trouble making a solenoid can someone please help me on how to make it

Topic by minecraftpotato  

rewind Solenoid? Answered

Dear All .. My original solenoid winding by awg 30 magnet wire,  now I would like to  rewind new  with 2 x awg 33 So please help me to know : -The new (2x awg 33 )  they power as identical  as  1x awg 30  magnet wire? Thank you so much .

Question by lam.huuminh.3    |  last reply

Solenoid secrets?

Folks, I recently purchased some inexpensive 110Volts AC solenoid coils from China through eBay (of course.)  As I understand solenoids will convert electricity into linear motion.  I have been unable to do that.  I tried ferrous rods as plungers, they get stuck inside the walls of the coil's cylinder.  No ferrous material like aluminum rod did not work at all.  Can someone please guide me to make it work.  I purchased 110 Volt coil thinking that it will create a stronger field, I don't feel the strengths of magnets to be rather weak. 1. The coil gets hot when energized.  Will it burn out if I keep the solenoid energized for 4-5 minutes? 2. Should I go for a lower voltage DC coil? 3. What happens to the dc coil if energized for long time? I would greatly appreciate your comments. Thanks.

Topic by kabira    |  last reply

Is there a way to turn a pull solenoid into a push solenoid

I bought a powerful push solenoid for part of a Halloween project, but when it arrived, i found it was a mislabeled pull solenoid... Is there a way to convert one to the other?... otherwise, is there a source of 24vdc push solenoids with a 1/2" threaded mount that will ship overnight?

Topic by gschoppe    |  last reply

Push/Pull solenoid on a switch or a solenoid valve? Answered

Hi, I have an air supply and, thanks to iceng, a rapidly pulstating (variable speed) 12v Dc power. I would like the air supply to allow through a set amount of air each time. I already have a mechanical switch that works perfectly, allowing the exact amount of air through, I need this air switch to be opening and closing as quickly as possible. Would I be better of using a push solenoid and setting it up with the switch or do you think I will obtain faster speeds using a dedicated solenoid valve? I was looking a this solenoid. (or something like it Though i am not sure about the valve version. Any advice/recommended solenoid (valve or push-pull) would be very helpful. Specs: 4mm pipe (ext diameter) 2mm (int diameter) 6 bar (preferably have the solenoids as small as possible) Thanks

Question by Digital Flame    |  last reply

solenoid valve control

Hi, im wanting to build somthing simple to control the heater control valve on my fiesta. its a simple solenoid valve at 0v its open(hot) at 12v(14.4v) its closed(cold) the propper control board uses pulses to control the valve, the board has since given up and im left with a very hot car, now i thought a simple way to sort the problem might be to use the 10k pot on the control board with a MOSFET and just vary the voltage going to the valve. will this have the same effect on the valve?

Topic by stevelee10    |  last reply

Solenoid vs actuator

I'm planning on adding network capabilityto my current remote car starter (like the viper systems) At first i was thinking of hacking a remote and connecting it to my microcontroler. But since the spare remote cost 80$ I chose to go out with a mechanical pushing of the button instead, at least for the prototype. Considering the following facts, what do you think i should use? The solenoid/actuator must operate at -22 f (-30c) I dont want the thing to smash the remote too hard and break it Thanks

Question by gazoutg    |  last reply

Programmable solenoid controller

Hi all, I need some help finding a suitable solenoid controller, it must be dc powered and operate a latching solenoid for an hour every 24 hours. It must be programmable by the user and operate the latching solenoid instantaneously on and then off separately. It should be relatively cheap as its for a HNC lawn watering project. Regards woody.  

Topic by woody1001625    |  last reply

How to control a solenoid? Answered

Hi, I have a tiny solenoid from an automatic air freshener that I want to control manually. The solenoid acts as a valve that opens when fed 5v, and closed when no voltage is present. On the factory board, there's a timer that triggers the solenoid every few minutes for a fraction of a second (opens and closes so fast it just sounds like a click). What is the simplest way (No Arduino, Raspberry, etc.) to make a 5 volt pulse to make it go "click" on the push of a button?  Further more, how would I control the length of the 5v pulse?  I want to be able to control the amount of gas it passes (Pun intended) when activated. Any information would be helpful, and a circuit diagram would be greatly appreciated (I can read diagrams but can't design a circuit). Thanks!!!

Question by Morgantao    |  last reply

Supercapacitor + Solenoid + MOSFET?

I am designing a coilgun with three stages. Each stage has 1mm thick copper wire, with 32 turns across 32mm of length (1000 turns / meter). There are 4 layers with the same wire, length, and number of turns on each stage. Each coil will be powered by a 100F 2.7V supercapacitor (assume charging circuitry has been implemented). With those values, I have calculated that the resistance of the coils is about 0.1 ohms. With a 2.7V capacitor, I can get almost 25 amps of current through the coils, resulting in a total magnetic field of about 0.1 tesla. If I wire the coils in parallel, I get a resistance of 0.05 ohms and 420 amps through the coil, resulting in a field of strength 2 tesla.Now, the problem I am running into is shutting off the current at the right time. I found a MOSFET used for 3D printers that says it can handle up to 280A (360W at 12V or 720W at 24V). If I use thinner wire, I can decrease the current to below 280A which I suppose is powerful enough for the coilgun.Since I will be using an Arduino or similar microcontroller to manage the timing for the coilgun, would I be able to use this MOSFET (linked below) to shut off the current using a signal from the Arduino?

Topic by BiaxialObject48    |  last reply

What is a Solenoid Valve?

This Design Squad Nation animation shows how an electric current flowing in a coil produces a magnetic field. Explains how a solenoid uses a changing magnetic field to move a rod back and forth to do mechanical work, such as opening and closing a valve. For more Design Squad Nation visit our website.

Topic by designsquad  

Electro Magnetic Core Solenoid

Dear Friends, I need to lift a weight of 100 grams or 500 grams weight using a solenoid. I can use any current DC or AC. What is the procedure for calculating this. Please help me. Ramanathan PS INDIA

Topic by RamanathanP    |  last reply

Delay Power To a Solenoid Valve

I am making a pneumatic cannon with a solenoid valve which is turned on by a switch. However, I am wondering how I could delay the switch. So, when I flick the switch the cannon doesn't instantly fire, instead it would be delayed by maybe a half a second or so for effect. Would I use a 555 timer? I'm really new to this, so could you tell me how I would go about doing this? Thanks Guys

Topic by Make me a SANDWICH    |  last reply

Cheap air valves or solenoids?

I'm planning on building an unconventional pipe organ, but I am having trouble finding good cheap air valves that I can buy 60 of to complete an entire manual (keyboard). Normally, a classic organ would use mechanical linkages to a sort of air switchboard, but I have neither the time nor the inclination to build that kind of system (and I want everything to be physically robust and portable, for traveling and abuse during performances. Plus my pipes are very weird ones, and almost all of them would have to be offset anyway, so air tubes would be involved at some point no matter what.) So I'd prefer to have air lines going to each key, with a valve, and then the air lines continue to a much simpler switchboard, so that no pulleys or levers need to be involved. The valves can be electric (keys can easily connect a circuit instead of letting air through), or mechanical (pressing the key opens the valve), and my budget is about 2 dollars or less per valve. Any ideas or links? Homemade plans are welcome too, if you have a method that would be easy to mass produce and not cause leakage. Some of the lower notes may require higher airflow/larger valves too, so a solution that is scalable is preferred.

Topic by smurfsahoy  

Low voltage Push Solenoid

Hey everyone... I've been trying to find a DC push solenoid powered by 12V or less (I think 9V would be best). It needs to be able to push down on point and shoot camera trigger so I'm estimating about a half pound push minimum. I saw some time lapse modifications on the Make: photo pool. I'm going to do the same, but with simplicity in mind :P

Topic by trebuchet03    |  last reply

Controlling Solenoid Valves from a Computer?

How would I go about controlling a few solenoid valves from a computer? These valves run off of 120v source. I understand the question is vague, but anywhere to start me off would be great. Thanks, Austin

Question by Newman180    |  last reply

Need help to move a solenoid to sound

Hello all, I am working on a project where I need a solenoid  move to sound.  I was thinking of using an Arduino and a microphone to achieve it but I'm a little stuck.  The goal is to have music playing and have the solenoid move to the music.  I also want it to move to noise so that's why I went down the microphone route. Unfortunately after much searching on the net I've hit a brick wall. if anyone can point me in the right direction on how to do this, then I'd be a very happy person.    

Question by lonesoulsurfer    |  last reply

Explain me how to make an "Electromagnet Solenoid" more powerfull

I bought something like this off Ebay: Turns out it wasnt as powerfull as i need it to be but it has the right amount of travel and is nearly perfect in size... Notice that the body where the coils are is fairly short. What if i made my own? But MUCH longer body, (theres plenty of room in my aplication LENGTH-wise) will it get more powerfull? Can i make it more powerfull by adding more coil? Turns out i have plenty of coil like the one used in my solenoid, i have plastic pipe similar size and i can CNC the central "plunger" rather easy as well. Or make it different shape etc... The solenoid i have has a metal body, does that affect how strong the solenoid is?  The coils are wrapped around a plastic tube, the plunger is rather loose inside it and the tube could be thinner. Will thicker plunger and thinner tube improve the power? Im using a 11.1V lipo battery, something you can find in RC-cars. Increasing voltage/amps IS NOT AN OPTION.  So, in simplicity, if i make a solenoid like mine, but longer, can it pull greater load than the original or do i need to do something else as well? The actual aplication itself in simplicity is the solenoid pulling certain object back around ~10mm AGAINST a spring, not very powerfull spring might i add. It pulls the object back, then lets go. It will be controlled via a circuit later but right now just a battery and nut-job holding a red button. I just need a solenoid powerfull enough to overcome the spring. The object needs some force  to return to its position so putting in a smaller spring is not an option eighter.

Topic by peelo    |  last reply

can i make a solenoid out of these materials? will it work? school project pls help?

I have 50 meters of uninsulated copper wire 20 gauge. I want to make 4 solenoids out of it, yes i know i need magnet wire or insulated wire but they don't sell it where i live (Mississauga, Ontario, canada) so i was wondering if i can use electric tape (vinyl electric tape) to insulate the uninsulated wire and use it to make solenoids. first time on instructables so i apologize in advance for any mistakes in this posts. Oh and the metal object needed inside the solenoid that goes in and out (idk what its called) can i use canadian pennies and apply hot glue to make a long rod? would that work? i don't need the engine to push anything heavy i just want it to work.  Thanks

Question by ZaidA10    |  last reply

A question about electro magnets and solenoids?

This question was longer but this is the third time I'm trying to post it internet problems XD SO i guess if you need more info I can provide more. Any way I was wondering if anyone had any tips for making stronger electro magnets and solenoids. I want to make some that can lift and move like 5 pounds, I have no idea if this is a lot or not so if it's unrealistic... woops. Any way for the magnet I've been using nails I could find around the house, C batteries and magnet wire I got from radio shack,  and the solenoid I use the same power and wires but I took apart some random free pen form a gym and use a random long screw that only had threads around the tip and sorta wiggled around inside the pen case. In both cases they only could hold up or move about 8 ounces. any ideas on making them stronger? or am I just being unrealistic?

Question by justomeguy    |  last reply


Hello sir,  Im intrested in solenoids feild and wanna have practical experince in that.can you please tell me how to generate electrical charge by using solenoids and storing that charge in mica capacitors with less voltage rating high storage capability..which also has slow discharge. The time of storing the charge should be high.Hope will guide me. Thankyou. Raghudeep,

Topic by RaghuC    |  last reply

how to make a good relation between magnetic fields that formed by electric fields and magnetic force ?

How to make a big magnetic force if we have a Direct Current battery, a solenoid, a magnet?

Question by puteri salmiati    |  last reply

Looking to replace LEDs with solenoid driven indicators.

I'd really like to replace some LED indicators with physical on/off indicators, like they used on old NASA spacecraft. To see what I'm talking about take a look at this console from Apollo 14 at the little windows above the switches at the center left. The top row is all "barber poll" the bottom row open.My initial thought is that I could possibly replace the LEDs with a solenoid that would shove an "on" indicator into a little window when powered, and retract it when powered down.The problem: I know next to nothing about solenoids and don't know if this is feasible. They'd need at least 1/4" throw and to run at low power if they're going to simply be a drop-in replacement for LEDs. What kind of solenoid am I looking for and does it even exist?

Question by Grathio    |  last reply

How much power to control 3 x12V Solenoids?

Hello! :) Newbie here (and to using Arduino). Sorry in advance for the dumb question: If I'm using an Arduino uno to control three 12V push-pull solenoids, how much external power do I need? I tried using  3-12V power supply to control 1 solenoid only, but it didn't work.  FYI, in the circuit I'm also using: - TIP120 transistor - 1N4004 Diode - 1K resistor (don't have a motor shield to replace all of the above..) Not sure where I'm going wrong. Could anyone help me please? Thanks! 

Question by Joanne55    |  last reply

Should I use a remote-controlled solenoid to tip something over?

Hi all, I want to be able to remotely tip a model face over when my friend walks in the room (see attached photo). The face is made of cardboard and spray foam and is mounted on a piece of plywood that is hinged to the table. Should i try to use a remote controlled solenoid to pull this gag off? Any better recommendations? It should be remote but I could probably hide a wire if there is a different and more reliable system. All advice welcome!!!! Thanks, D

Topic by damianzuch    |  last reply

Using a Push Solenoid as a finger press to start video game console...Help please

Ok guys so Basically I have a plastation 2 console in my arcade machine, I want to be able to turn it on via a arcade pushbutton on the outside of my machine. The idea I have is to use a linear push solenoid to act as a finger to press the power button on the front of the ps2 everytime i press that pushbutton........ Is this possible? what type of push solenoid do I 12v? size etc.... and can I use a momentary contact pushbutton to power on the solenoid momentarily to do a single press of the playstation 2 power button? Thanks for any help... P.S. I have very little knowledge of robotics or servos and solenoid usage....but I can solder, wire, etc....

Topic by Negativecreep0    |  last reply

Need a controller (or program) for low voltage solenoid valves, programmable to have a station stay on for days @ a time

I have 16 solenoids that need controlling to open air valves in sequence that create bubbles in a fountain that simulate moon phases.  Would like something that is stand alone hardware over a program that would require a computer to be on 24/7. 

Question by Brent Owen    |  last reply

Electronic coin dispenser

I'm trying to build an electrically controlled coin dispenser (all the coins will be the same type). I have a metal tube -just the right diameter for the coins - mounted vertically, with a piece of wood horizontally at the bottom. There is a gap between them of approx 1mm, just enough for a single coin to be visible. I've been experimenting with using a solenoid to swipe a coin from the bottom. Rather like the image here: Solenoids aren't cheap, and I was aware that the weight of the pile of coins (I'd like to be able to hold around 100) would mean it needed to be fairly powerful. In the end I bought some cheapo solenoids from ebay (around $7 each). They are rated 2A and have a hold force of 20N - this seemed a lot more powerful than I could find elsewhere for even 10 times the price. Given how cheap they are, I could even use two in parallel if I still need more power. I'm using coins with a 20mm diameter, but after the solenoids arrived I realised they only had a 10mm stroke - obviously not enough to fully push the coin away. I've tried using the solenoid to pull a lever, but this doesn't seem to work very well. Previously I'd also tried a stepper motor linked up to a disk with a coin-sized hold cut on it, rather like this: That worked pretty well but was very slow - it would take 3 or 4 seconds to dispense each coin. So, I'm looking for a bit of advice. Would I be better off splashing out on a more expensive solenoid with a 20mm+ stroke? Am I approaching it the wrong way?

Topic by psmith37    |  last reply

Where to source Pneumatic solenoid valves in Canada?

Hi, Does anyone know where to find miniature Pneumatic Solenoid Valves in Canada? I have only been able to find rely cheap low quality ones from china or really expensive ones from America. Something in the middle would be great! Thanks

Topic by IanS160    |  last reply

Suggestions for a cheap source of solenoids for a music project? Answered

I'm looking for some 'normally in' the would perform a striking action when voltage (pref. low) is applied.  I'm not above scavenging, ordering online, or building my own.  It just has to strike a xylophone and retract, so not a lot of force is required. Any suggestions?

Question by NEIN    |  last reply

how to use solenoid with Capacitor Discharge Technology?

Hello guys, i am on a project for a pcp air gun, i want to replace the hammer that open the air valve with electronic trigger, a solenoid to strike the valve open, the travel of the valve is maximum 3mm, a weight will be added to the solenoid to help with kinetic energy. the idea is to use capacitor discharge to activate the solenoid for a fraction of a second (to fire a burst of air propelling the pellet out of barrel) i have seen some electronic triggers using 67v 2200uf capacitor, just to give you an idea. now i want to control the solenoid force and duration. can i do that with arduino? sure i need an external circuit to power the solenoid, maybe like the disposal camera flash?? Please advise. thank you

Question by gerarddag    |  last reply

Power supply for a strong solenoid (recoil simulator)? Answered

Ok, I need a power supply for a solenoid. It is to simulate the kick of a pistol. I need a power supply that is small, so that I can hold it in my hand without being to heavy to hold for a long time or it being uncomfortable. The solenoid will have a neodymium rod made of lots of 6mm*3mm neodymium magnets inside it. The coil is 5cm long with 0.8mm ECW and 7 layers although it can be rebuilt. The point is that I need something to power this coil and let the neodymium magnets hit the wall behind the coil (wrapped around a 6mm tube) and produce a sort of kick. The power supply needs to run on a roughly small power such as two nine volt batteries (dc). This is a long question but I would greatly appreciate any help. Thanks :) (I have a circuit to make it produce recoil (electic bell...) but how will I power it to be powerful enough!?) Thanks again!

Question by Digital Flame    |  last reply

knowledge about wire which use in solenoid?

I want to make a solenoid & i am confused because i don't know that which type of wire is use which no or ohm . Actually i have a project in which I want to produce electricity  with the help of magnets or solenoid . So can u plz guide me this matter very gently  Thank You Ashish Dhiman

Question by adhiman2    |  last reply

LCD arduino speedometer sending signal to solenoid

Hi i'm a student, i'm currently doing a project which require me to be able to send the signal from the LCD arduino speedometer to the solenoid, help please!!!!!!  P.S if i'm missing something out please post a comment.  Thanks 

Topic by brian.tan.10004    |  last reply

Remote connection to an underwater solenoid and air canister

Hi and thanks for welcoming me to instructables. I need to develop an idea by remotely connecting to a solenoid to allow the inflation of an air bag that will be sitting on the ocean or river or lake floor. No greater depth than 20m. The size of the air bag will be the volume of a basketball to be able to lift no more than 2-3 KG. I would like to know how I can communicate remotely to a control unit on a basket and air bag.Thank you Terry Gillam

Question by terrygillam    |  last reply

How to connect a solenoid valve to my water container? Answered

I have a setup in my mind, consisting of a plastic bottle(filled with water) with a male threaded neck. This bottle is sitting upside-down so the threaded neck is on the bottom. I want to transfer this water to a cup(by freefalling water) through an electrically controlled solenoid valve. The problem is, the plastic bottle I have picked out has a neck outer diameter of 1-1/2 inches, and assuming I want to directly connect the solenoid valve to the neck, I need to get a 1-1/2" diameter valve, which is above $100. Is there any way to connect this container and a valve(still not picked out) without that high a cost? Maybe a reducer of some sort(i looked but cant find any with 1-1/2" diameter on one side)?  Thanks guys, and sorry if the question is kinda weird and simple. For a reference, check this project. What i want to do is similar,but instead of using a pump, I want the water to freefall into the cup.I'd like to eliminate the tubing too.

Question by Chris414    |  last reply

Device for touching a touch screen? Answered

I need a type of solenoid/servo device capable of moving a few millimeters at a fast speed. I am building a device that will tap a touchscreen for me via an electric signal (In this case, and arduino.) they need to be relatively cheap and small. I will have four of them evenly spaced over four inches (They need to be no wider than an inch, would much prefer they be less than a half inch in width. Height isn't important, and length should also be under an inch.) They also need to be fairly weak, i dont want one of them punching a hole in my tablets screen by accident. Doesn't need to be controlled by PWM, either off (Not touching) or on (Touching) will work fine. Please do leave links along with the name of the device/part.

Question by RocketPenguin    |  last reply

Camera flash magnetic cannon?

Is it possible to make a strong magnetic cannon using camera flash units? I've read about some instructables that provide instructions on using several capacitors connected in parallel to provide higher current, but I'm really skeptical about the performance of such a cannon. Can anyone make an instructable and provide video evidence on this??

Topic by Boppo3  

How to make solenoid retract when friction applied.

I have a 12V solenoid that was going to be used in a project with a spring loaded door. It was wired into an arduino project and all was going well. That was until I realised that if the bolt had any friction on it that it would not get retracted when power was applied.I wonder therefore whether there is a simple way of making the bolt retract even when friction is being applied?Alternatively, is there a simple mechanism that could be made where friction can be applied to something else that doesn't add friction to the solenoid bolt itself so that when the bolt is retracted the secondary part is free to move and release the sping loaded door.Any help would be appreciated.

Question by mjolnirofthor    |  last reply

Does anyone know how to connect Solenoids to a Arduino? Answered

Hi All, I'm working on a project and I was wondering if any of you could help me hook up a solenoid to an arduino so that I can control it using a button? The solenoid I'm working with is 24v dc with 6 watts Thanks  Aman 

Question by amantux    |  last reply

Using a small solenoid to trigger a co2 hammer valve

Hello, I have a question that is integral to the design of a project i'm making. I am trying to make an airsoft gun. For a power source, I am using a 12 gram co2 powerlet. My main problem is the trigger mechanism. Since I want the design to be semiautomatic with no blowback, I decided on an electric trigger to avoid the long trigger pull associated with mechanical triggers. My valve is taken from an airsoft pistol magazine and is pretty small. It is operated by having the rear "button" of the valve hit with a simple hammer, which moves the valve pin and releases gas into the barrel. I want to use a small solenoid in place of the mechanical hammer. When activated, the solenoid's push end would snap forward and hit the valves "button." I was wondering if this is possible on any kind of smaller power supply? It doesn't seem like the valve button needs much more than a tap to dump a good amount of gas. All the projects i have seen like this are fairly large scale, for larger airguns, and they had to use large unreliable power supplies. I would like to keep this whole thing as lightweight as possible.  I was thinking that i could use a simple switch or circuit that would just dump some voltage into the solenoid for just a fraction of a second, to fire one shot for each trigger pull. Would this solenoid work? Also, the valve I am using is tiny, about an inch long. The "button" that needs to be tapped to release gas is about 6 mm in diameter.  Is there any way to calculate the exact amount of force needed to trigger the valve?  Does anyone have any advice for me? 

Topic by ilpug    |  last reply

Solenoid Valves with exclusive INSTRUCTABLES Discount - 15% OFF

We are offering an exclusive deal to the INSTRUCTABLES community of 15% off your purchase. This code is good for the rest of 2013! We also have free priority shipping for orders over $20. We love supplying users of the INSTRUCTABLES community with valves because they build some of the coolest projects! We have many sizes available and lots of low-cost options for those small projects. USE CODE: DIY2013

Topic by expressre    |  last reply

intervalometer for servo or solenoid operation? (timed button presser) Answered

HI! I would like to create timelapses with a dslr i own. My camera has no ports for a remote shutter timer unfortunately so i need an alternative. I want to build a mechanical system to hit a shutter release every X seconds. ex: servo or solenoid. it seems like this should be fairly straight forward using an arduino or even maybe just a potentiometer i just cant quite seem to fit the puzzle pieces together to make it work. i am comfortable with soldering and am alright with arduino control so dont be afraid to get a little technical haha... just not toooo much...

Question by aplauche    |  last reply

New/Stumped/Need Help - Solenoid Simulated Recoil

I have the body of an old Airsoft M4A1 and instead of throwing it away i had the idea of making it have simulated recoil through a solenoid. Now of course i realize that i could never make something with the kick of a real gun but at least something i could feel.(Like the arcade games) I have had some really successful tests with LI-PO batteries but they were all to big and had bad connection spots, and then i tried 6 AA batteries in series with a 1000uF 16v capacitor(I dont know if i am using the right capacitor or if i wired it incorrectly), but my attempts have failed, i am new to circuits and electricity, any thoughts on a power source,or ideas on different angles i could go.P.S.-The solenoid is homemade and is made up of 14g wire (All i had laying around)-And functioned well with a 3.7v 6000mAh Li-Po battery(Recycled from an old portable charger)

Topic by TacticalMilsim    |  last reply

How would I trigger a solenoid from a timer pulse, either from a 555 or the output of an electronic metronome?

Emphasis on cheap and easy. Small and portable (battery powered) also are big plus. Basically the solenoid- triggered either from a 555 or headphone out of a metronome (which would be easier?) would tap the table (or other object) to the beat. (I'd love to tape this to my drummers head!)

Question by merrickhard    |  last reply

I'm looking for a pneumatic solenoid valve of a certain layout and not having much success. Can you suggest one for this

I'm looking for a pneumatic solenoid valve of a certain layout and not having much success, although I am CERTAIN it must exist and by the level of knowledge exhibited around these parts -someone here will know of one! Here we go, I need a really simple "normally open" valve with low current draw, small dimensions, good sealing, -in fact something very much like this type only normally open in design and capable of handing 18psi Do you know of a suitable design on sale for my project? Thank you for your constructive input and I hope the answer will help anybody else who is looking for a valve with similar requirements on their project :D

Question by Fingermouse    |  last reply

CPU/555/mini chip circuit and coding help? Answered

CPU/555/mini chip circuit and coding help? You can probably tell I don't really know what i am looking for, I have a micro-switch and a 12v dc pneumatic solenoid (for air pipe valve) I need a cpu device to say, every time power is received, no matter how long short or even if I don't release the switch at all, wait a fraction of a second or so then release 12v dc for x amount of time (to the solenoid). What parts do i need for this and how will I program it? Thanks in advance, -Digital

Question by Digital Flame    |  last reply