Treadmill DC Motor Control

Hi all,I have been given a treadmill motor by a friend, sadly none of the control boards have come with it, just the motor and a transformer bolted to the same bracket.I'm hoping someone can tell me the best way for a layman to hook this up for variable speed, as I would like to improve on my 1/4hp single phase motor currently attached to my lathe.I don't know much about the motor and could not find a datasheet, but a pic is attached.Is there any plug and play options that don't cost the earth, ideally i would like to be able to plug it into the mains (UK) and just control with a pot.As always thanks in advance, you guys make this place a great resource for us noobs.

Posted by Squibo 6 months ago

what motor to use??

I'm a novice with motors, so would appreciate some help and advice. I envision a project with two blocks of wood side by side.   Just a couple of 12 inch wood squares, for example.   I want to rotate each individually, though to different degrees and at different increments.  The first block should rotate 90 degrees at 15 second intervals.  The second block should rotate 180 degrees at 30 second intervals. How would you recommend i accomplish this?  what motor would you recommend? must i use a microcontroller and a step motor?  I have some experience with arduino, but wondering whether there is a simple circuit or a simpler mechanism of some kind Thanks very much in advance.

Posted by dbykat 6 years ago

my motor does not work ?

I have made a motor but it just does not work. I wrapped 0,25 mm sq copper wire 300 times around a magnet. And i connect the beginning and the end of the wire with some copper so that electricity can go through ( i do not know if it is right or wrong ). I tried to put on some batteries, i even tried to connect the wire to the electric socket but it does not work, either. What have i done wrong ? thanks a lots

Posted by Phờ roenP 3 years ago

400 Volts 3 phase to 240 Volts Single phase Motor

Hello we bought a cutter from Europe.  It came with 400V 0.75W  3 phase  motor. The motor has leads W2, U2, V2 U1,V1, W1 To convert to the 240 V single phase we jumped (W2,U1), (U2, V1), (V2,W1). We also put 50uf capacitor between (W2,U1), and (V2,W1) .See attached pictures. However the motor starts and spins for about 5mins then it trips the breaker. The motor heats up . Voltage reading Between (W2,U1) and (U2, V1) =240v Between (W2,U1) and (V2,W1) = 370v Between (U2, V1) and (V2,W1) =240v We thought  (W2,U1) and (V2,W1) = 370v was little high. Also the resistance between winding W1W2 is 36 ohms, U1U2 20 ohms, V1V2 20ohms Can someone help? I will really appreciate you help

Posted by ngong123 8 months ago

Not sure where to find a 60 to 120 rpm AC motor

I'd like to add a small motor to a hand cranked coffee grinder (Hario Skerton Coffee Grinder).  It's conical burr style grinder that produces a consistent particle size (much more so than the mini blender, whirlly style grinder).  I'll expand on why that's important when I build the thing.   My problem is that is takes 10 minutes or so to grind enough coffee for two people. I'd like to put a motor on it.  I tried spinning it with a battery powered drill, but the RPMs were too high.  The burr spun faster than coffee beans could feed.  I'd like a motor in the 60 to 120 rpm range.  I still need to determine the torque required.  Additionally, I'd like to plug this right in to a 110 outlet.  Does anyone have a suggestion on an appliance I could scavenge or the type of motor I should look to buy?   Thanks, Mike

Posted by MikeM50 3 years ago


A while back you may (or may not) have seen this Japanese electric motorcycle prototype called the EV-X7. It was advertised to use a "Super Electric Motor" that was the combination of a permanent magnet and an electromagnet (isn't that was a motor is?) which would allow the vehicle a range as much as 180 kilometers (111.846815 miles) on one charge with a top speed of about 150 kilometers per hour (93.2056788 mi / hr).A few sources said that in about a year they would start producing a smaller version... That was 2007, and the company's website doesn't look very promising...Ok, so now what? Too bad, eh? Well, yes...However, the research company, Genesis, seemed to have posted something on their website:Translated WebsiteAnyone wanna see if they can build one? =D

Posted by robotguy4 9 years ago


Anyone out there no a way you can convert a 0.5HP electric single speed motor to a variable speed motor (if it can be done)

Posted by splott 10 years ago

Electric motor

What would cause an electric motor, running a table saw, to suddenly start running at a faster speed than normal?

Posted by tablesawguy 4 years ago

Regarding motor controller selection.

I need a motor controller for 24V, 20A Actuator. The motor controllers receive 16V from battery and also had to boost the voltage to meet actuator specifications. Can anyone help me finding a motor controller of such sort?

Posted by GamanM 1 year ago

How to power a brushless motor

How can i power a motor like this (with 3 pins) just to max speed? it's for a propeller clock. thanks

Posted by bfernandes1 4 years ago

Motor Question

I have two motors I am using as wheels, but they both spin in the same direction making my robot spin in circles. Can I change the direction a motor spins? Maybe by switching positive and negative sides?

Posted by Soileau 10 years ago

Measuring Current of 24v dc motor

How to measure the max current of 24v dc motor.. please give me step by step guidance. many thanks

Posted by epple 6 years ago

Homemade Brushless Micro motor

I want to make this  Micro motor for my indoor plane, Anyone know how to make ?

Posted by DamienP7 2 years ago

electric motors

I am considering motorizing my bike for my work commute. However I don't have enough knowledge about motor output as in torque / rpms to be able to determine what kind of characteristic I should be looking for. For many of the electric motors I am finding online, it doesn't really say the torque output. Is there a spec such as watts that I can judge a motor by? What specs should I be looking for in a motor that can assist in moving my weight. Or an links to good knowledge sites would be great too. Thanks.

Posted by aeneas shrike 10 years ago

Help me guys! I need to measure a motors lift weight(for a flying machine)!

So, I'm making a hover bike. Yea, dont judge me. And i have to measure the motor(s) needed to lift my bike. I have measured that my bike will weight about 75kg with me without the motors. So i need motor that can lift 75kg+(motors weight) at a power consumption of (something). Help please? :D

Posted by ТерентийМ 1 year ago

Controlling motors with my Arduino

Hello, i received an arduino (duemilanove) as a gift for christmas so im still kind of a n00b, i was wondering if it was possible to control motors directly from the arduino for an upcoming project? i would buy a motorshield but im not sure if its compatible with the duemilanove and if i do buy it i wont be able to get it until around easter I need to run two-three motors in bursts repeatedly (ex. Motor 1 for 1 sec Motor 2 for 1 sec motor 1 for 1 sec...................... you get the gist of it) Thanks in advance, Firezone 

Posted by firezone 8 years ago

WANTED: DC motor

I'm trying to build a wind turbine. If anybody has a DC motor from a old treadmill, electric scooter, etc. I would love to have it. The idea motor would be one with highest volts per rpm. That means low rpms and high volts. Let me know if you have something.

Posted by JSTArollin 5 years ago

Motorized bike

Hello, I have two motors and a battery out of a power wheels truck. I was wanting to mount it to my Chopper bike. Has anybody  done that and if so give me some advice P.S.  My bike has no gears and it has no pedal brakes.

Posted by MetalManMustang 7 years ago

looking for motor mounts

I'm wanting to attach a few motors to a wood frame; however I'm not sure how to go about doing this.  The motors I'm using are in the picture; you'll notice their really isn't any holes to attach any mounting brackets of any kind.  I was thinking of using a 3/4'' pipe clamps, but was wondering if anyone here has any advice or experience with this.

Posted by Spaceman Spiff 5 years ago

maintain initial and end position stepper motor without energy loss

Hi all, In a project of automated vertically folding curtain I have the problem that whatever the position of my curtain (8 kg) is, the motor is always drawing current. Let's say the curtain stays for 8 hours in the same position, then during these 8 hours the motor is wasting lots of energy. Is there a method/mechanical system which can be used to make sure the motor only uses energy ("works") if the position of the curtain has to change? Thanks in advance

Posted by mmsyx 2 years ago

Help. Clothes Dryer Motor

Help.. I have a Motor from a Clothes Dryer.. I want to Use it as a Generator.. can anyone help me? It has a three wires.. a blue, red and yellow-black ones.. how will i use those wires? please give me some inputs.. thanks.. 

Posted by vpuato 5 years ago

Can I power a motor off a solar 12v cell?

Hi, I have a 12v, 0.5 watt solar cell and wanted to use it to power a motor without the use of rechargeable batteries. Basically, when the sun is shining, the motor is spinning. I have a few small motors lying around and tried to hook them straight up but none of them would turn (even though some of these will run off a 1.2v AAA battery). I'm guessing maybe there aren't enough amps to power the motor so I was wondering if there was any way to bring down the voltage and increase the amps so that it might work? Thanks.

Posted by horsebones 7 years ago


Hey!!i started working on a project based on ldr and i realised dc motor and ldrs don't work together so before i buy ac motors i wanted to ask that will it work??thanks in advance.

Posted by robo10302 5 years ago

How to use gear motor 9 with Arduino

I am new to robotics. I want to make a robot using Arduino Uno R3. I need to use Gear Motor 9 for that The problem is that motor needs 50mA current. But arduino only outputs only 40mA current. I want to supply the motors with another power source and use a switch to connect both the circuits. Can you please tell me what type of switch I can use. Thanks in Advance. P.S. Sorry if I used any wrong technical terms

Posted by sampath_o2 3 years ago

Radio Controlled K'nex Motor

I have finnaly found someone selling an RC knex set!!Have a look

Posted by ajleece 9 years ago

motor control with TDA1085 circuit scemtics please?

As above looking for help designing a circuit around this chip I have plenty of datasheets but can't find any schematics besides those in said datasheet

Posted by pmills4 5 years ago


Ok so i have a little problem here... i want to make a little electric motor go forward and backward by pressing a single button for each move (so 2 button in total) i got a little image ( poor quality i know but youl get the point) of what i did but its doesnt work :/ thx

Posted by koax 10 years ago


Hello. I saw certain Arduino Tank projects like the A.A.T. in particular... I saw a maker using an SN754410NE Motor Driver, which got me confused. Im a beginner Arduino user, so i dont know very much about it, but I am wondering why did he use the SN754410NE Motor Driver  and not a motor shield? Thanks

Posted by vek11 6 years ago

Can a 120VAC/12VDC LED driver also power a small DC motor?

I have a project in mind using 120VAC with some 12VDC LED tape and a small 12VDC motor (about 100mA).  Can I run the motor off an LED driver in parallel with the LEDs, or do I need a separate transformer for it?

Posted by walter.warren1 3 years ago

exact materials needed for a servo motor build

Ok hello everyone im back again ive got everything built but my servo motors i need to make atleast 126 of these ive got the gears of all different sizes i just want to build my on motors so if you could just give me  materials list of what i need to the very smallest of materials id be greatfulll and i will make a instructablle on how to build what im building. thank you very much  oh by the way it has to be materials for a very high torque motor with very high revolutions

Posted by prini 5 years ago

Universal motor

After disassembling a hedge trimmer I have obtained a universal motor (meaning it can run on either ac or dc) It has a power rating of 400W, and a label indicates that it has 1/2 horsepower. Does anyone have any ideas as to what to do with it? it's fairly small (15cm X 5cm X 5cm) and in reasonable condition. Thank you for any responses.

Posted by csharpdeveloper 9 years ago

Help a newbie buy the right motor

I'm endeavoring on an art project which basically consists of a motor attached to a mobile, though I'm quite illiterate when it comes to electronics. The motor that has a fair amount of torque, and I need to have precise control over the speed. Ideally, it should be quiet as well. I was thinking this might be a good time to venture into the foreign territory of Arduino and servos, but again I know nothing. Any advice or resources you can offer would be greatly appreciated. Thanks! Lance

Posted by LanceMakes 6 years ago

please help make simple timed curtain puller

My idea for a simple curtain puller is to have a motor on a timer, the motor turns on and winds a cord/string that loops around the curtain, pulling it to the side.  The part that I need help on is turning the motor off when the string is sufficiently coiled, so either it would be set for a certain time/number of rotations/ or amount of resistance.

Posted by SethR14 2 years ago

Need Help Finding a Servo Motor...

I need help finding servos that are similar to these (sadly, it doesnt look like Conrad Electronics ships to the US). i cant spend more than $10 USD per servo and the site has to be able to ship to the US.

Posted by REA 7 years ago

Good source for small motor and metal gears?

Does anyone have a good source for small motors and metal gears?  I was surprised to find that I can 3D print plastic gears cheaper than buying them at a local hobby store but would prefer metal if I can find them.  I need between 1" and 2" sizes, and not just random pieces.  They need to be the same pitch so they'll mesh.

Posted by walter.warren1 3 years ago

Slowing down an electric motor?

I am working on getting all the supplies together for my first instructable.  The item I am building (not giving out many details) will have 5 different motors on it.  I think all motors will be the same model.  However I want one motor to run quite slower.  Can I do this without having to run it off a lower voltage power supply.  Now that I think of it I suppose there is plenty of room in my item for a 2nd power supply.  But this will still be good information for me to have in the future.  Oh and the main power supply for the item will be either 3 - 6 volts I believe.  AA batteries in case this matters at all.  Thank you in advance for your help in this matter.

Posted by jcaresheets 7 years ago

Making a large electric motor from scratch

I searched the archived threads and found quite a bit alreadydiscussed here about making very simple and small electric motors fromscratch. What I want to do is to make a fairly large and powerful one(say, somewhere around the size of a coffee can). This is for asculpture project, and the motor will be driving a kinetic mechanism.I'm pretty handy, have a extensive range of tools and am comfortableworking with high voltage. What I am not, however, is knowledgeableabout designing or making electric motors; hence my questions.I understand that I'll need to wind armatures and so forth, but Idon't know what the advantages/disadvantages would be of making a DCversus an AC motor (either power could be supplied), nor do I reallyunderstand the differences between the various types of those two. Themotor needs to be able to start by itself under load (as opposed tosome homemade electric motors that seem to need a nudge to get going).Simplicity, low maintenance and ease of construction would be a plus.I had thought of making a homopolar motor such as they have at theExploratorium ( but it seems that homopolar motors like this cause considerable wearto the part that acts as a brush, which will work against my goal oflow maintenance. Unless...perhaps I could use a rolling conductor (like a precision bearing) as a brush? Does that make any sense?Thanks for any advice!

Posted by Bricology 10 years ago

mythbusters motor cannon

On mythbusters the made a tire shooting thing similar to an automatic piching device with two wheels that rotate in the same direction and you push the ball into them and it flies away i just wanted to know if anyone had made one would have been good for launch it

Posted by sam117 10 years ago

Speed control for AC electrical motors

I want to use a GE A-C motor (5KC33GG101): Connection Type and Voltage Rating in Volts: 115.0 line to neutral single input Rotor Speed Rating in Rpm: 1725.0 single full load Frequency in Hertz: 60.0 input to run a 50' line on pulleys for a Halloween project but it's too fast. Can anybody help me figure out if I can buy/build a controller to run it slower?

Posted by mario-alonzo 10 months ago

Slowing a motor

I have a 4 Watt mains powered motor that currently spins at 1.6-1.9RPM. I need to find some way of slowing it to maybe 1 revolution every 10 minutes. It's all sealed in a metal case and connected to the mains by a standard plug. I really need to find a way to do this without breaking it apart stuff as it may need a safety test later, I looked at dimmer switches as they essentially limit the voltage and are a max of 300w. Like this - I realise that they are made for lights but it's a similar principle and is only about £6. Would this work? Are there other options if I don't want to break into the motor housing or wiring? Thanks.

Posted by happysnail 7 years ago

Want to make a motorized mask

I want to make a mask for a group project. I want to have it made of six emotion masks similar to attached image. I want to make it be able to used a wired control to rotate to any of the given masks, and it has to be wearable. I'm not much of a craft person, but i have 6 weeks, just need to know where to start

Posted by jevans28 6 years ago

stepper motor help

Hi, i need help in building a cnc machine. not the hardeware just the circuit. i already saw this and the circuit that it included but i coulden't understand the circuit. there is this circuit which i have already built but need help connecting it to my parallel port on my computer. i would really appreciate it.

Posted by dark_inuyasha 10 years ago

can i use 1 speed controller (24v 350w) for x2 24v 350w motors????its for a electric cart?

Im looking to build a electric cart with two 24v 350w motors but im wondering if i can use just one speed controller for it, the speed controller is 24v 350w thanks james 

Posted by jbutcher05 8 years ago

Which electric motor for which project?

OK, so I got two projects for this winter. One - building a lathe for woodturning. Not a mini-lathe, but a bit more serious piece of equipment that I could use for some furniture details. Two - apple mill for cider. And I have two salvaged electric motors laying around. One is from an old Remington chainsaw, 1400 W and probably some quite serious speed. The other one is from a pump, actually water automate that sat on my 15-meter borewell. Do not have the data, but most probably slower (and it is way bigger). Problem is, I have zero experience with such stuff. For setting up the electricity side I will probably call in the cavalry, but first i need to decide, which motor I will use for which purpose. So, any advice, gurus?

Posted by wahur 5 years ago

Batman Grapple Gun Help!

So for awhile now I've wanted to make the batman grapple gun with all the features, including the ability to pull you up after the rope is launched. The only piece of the puzzle i need help on is finding the right motor to use in my project. In a Colin Furze video ( he used a drill motor but it was almost to slow, any thoughts from anyone?

Posted by noahdye 2 years ago

Will a 240 Volt AC Motor Operate on 120 Volts AC

I need to know if a 240 volt ac squirrel cage fan motor can be safely run on 120 volts ac. An quick internet search reveals several sources that all say no, but I am concerned that the people answering the question don't know what they are talking about - as is often the case on the internet. I know there are a lot of want-to-be engineers out there ready to answer any question posed even when they have no experience or knowledge of the issue. Please do not guess at this or offer some unsubstantiated opinion.  I need a real answer to this question. Here is what I do know about this issue from researching a couple of electrical engineering sites. Lowering the motor input voltage by 50 % does several things. 1) The motor will run slower. 2) The torque developed will drop to about 25% of its full voltage rating.  3) This decrease in torque can make the motor stall when trying to start under a heavy load. 4) There may be drastic speed fluctuations due to load variations.  5) The motor current will double if the load remains constant. I can understand how these issues could cause severe problems in some applications, but perhaps not in the application I am looking at. I want to use a squirrel cage motor rated at 1/20 HP, 240 volts, 0.5 amp in a direct drive fan application. Here is how I am looking at this issue: - I need to reduce the fan speed so the speed reduction is a good thing in my application. - I have test run the motor on 120 volts for about an hour and there is plenty of torque to operate the fan. I figure at the lower speed there is less air load on the fan blades so less torque is required. Again a good thing for this application. The is no heavy load at start up and the motor seems to have plenty of starting torque for the fan. The fan does not reach full speed as fast as it does on 240 volts, but it still does so in about 4 to 5 seconds so this shouldn't be an issue either. Since it is a fan moving air and not some machine moving gears and levers the load is constant so the speed does not fluctuate at all. Again this should not be a problem. The possibility of the motor current increasing is my only concern so far and apparently it is not an issue since a test run showed the current decreased from 0.5 amps at 240 volts to 0.4 amps at 120 volts.That is a significant current drop instead of the predicted increase. Since this is a fan, I think the current decreases because the load decreases with the lower speed. For these reasons and based on my apparently successful test run I think the motor will operate fine on the decreased voltage. However, I am not sure how to factor the motor slip into this. Slip is the difference between the synchronous and asynchronous speed of an induction motor. From what I have read the slip will increase dramatically when the voltage is cut in half, but I am not sure what physical affect that will have on the motor. If you know what effect that will have or know of some other factor I am not catching please let me know.         

Posted by biochemtronics 5 years ago

Need help

I have a small 1/4 HP electric motor that runs @1750 rpms  I tried to put a basic dimmer switch on it to help regulate the speed but it it still runs wide open. Should this work or what can I do?

Posted by captinkickass 5 years ago

What can you make with parts from an old dryer?

My dryer's heat sensor stopped working, and instead of fixing it, my mom wants to trash it. I want to disassemble it before the city comes to pick it up. Is there anything i can build from the old parts: motor, belt, pulley, etc..

Posted by magsalud 9 years ago

Help with Canon Pixma Stepper

Hey all- Looking for some help with this little motor I pulled from a scrap Canon Pixma.  I want to use it to drive a very basic tumbler for 3d printed parts. I'm using it and the geared shaft to drive the drum.  Can I run this directly from a wall-wart, and if so, can you tell me what flavor to look for?  I'd like to just solder barrel connectors on and run with it. Thanks, Jeff

Posted by jeffw75 3 years ago