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)
Topic by splott | last reply
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
Topic by koax | last reply
Alright i'm converting this old vex system into a rc car and the motor has and idle speed that can be controlled with this small potentiometer and when i turn it so the idle is off when i use it (i use it for steering) and when i use it the idle turns back on and iono what to do any ideas i tried using a resistor but it leaves too little voltage for the motor to turn the steering arm well
Topic by lightpacker | last reply
I have 13 stepper motors and 10 dc motors for sell. I just have way too many laying around. I would like to sell them all for 40 dollars shipped using paypal. I'm hopping to sell them to help fund my CNC project. I also might be adding more motor as I find them.
Topic by r1dd1ck913 | last reply
Hi, I recntly took apart a hard drive and there is a 7200 rpm motor inside. Only problem is that it is a stepper motor and I don't have any equipment to drive stepper motors and buying stuff to do is err... cost prohobititve. Would connecting a negitive wire to 2 of the terminals and positive(in sort of a crisscross pattern e.g. -+-+) to the other make it run like a regular motor? I just don't want to invest time to solder it only to have it not work.
Topic by ChickBang | last reply
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.
Topic by aeneas shrike | last reply
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.
Topic by csharpdeveloper | last reply
Is it possible to buy a pager motor, rather than ripping it out of an old phone or pager? If so, where would I go? (And if not, where would I go...)I'm looking to build a vibrobot http://www.evilmadscientist.com/article.php/bristlebot, but don't have the motor. Alternatively, is their something else I could use instead?
Topic by threecheersfornick | last reply
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 - http://www.jpgelectronics.com/products.asp?partno=350.109 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.
Topic by happysnail | last reply
I have a 24 volt motor from an old mobility scooter and I want to control it with my arduino but I have no idea what motor controller to use. I presume that I will need to use PWM to control it but what hardware to use I have no idea. Any help I would really appreciate. Thanks
Question by cheesemarathon | last reply
Hey, i am not good at electronics, but heres the idea: i have "planned" an energy saving motor. Anyway there would be a motor, say, driving a bike. The on the wheel's gear we could put another motor, which is for producing electricity. I am not too sure, but i think it produces AC current. But we need DC to drive the first motor (the one moving the bike). So hook up an AC to DC converter to the second motor (the one producing electricity). Then hook some diodes to the wires connecting the first motor from its power source. I think the wires going out from the power source needs diodes, too, since it allows current to flow in one direction (technical term called forward biased? ). To prevent the first motor driving the bike from "burning", a voltage regulator and a current regulator should be needed, right? That's basically the plan. I would be glad to be corrected if i got anything wrong. Thanks.
Topic by J50Nunlimited | last reply
Does anybody know of a source of motors that are rugged enough to survive long-term* on the surf-line of a beach? They wouldn't need to survive flying rocks, but saltwater and sand proof would be good. The plan is to use them in reverse, as generators, so DC is preferable. *In the first instance, "long term" means "more than half an hour".
Question by Kiteman | last reply
Alright folks, after my last posting of the washing machine motor failed to prove helpful, ( because of my lack of understanding, not the help offered, that was excellent ) I decided to scrap that idea and start anew, this time with a dryer motor. I have a motor here now that like before I simply want to be able to start and stop at will. This time around I have the original wiring diagram too! So, my question is how do I wire the thing, simply with an on/off switch? No variable speeds, no reverse directions, just on/off. Oh, and Id like it run on 110v as well.
Topic by kithso | last reply
I recently pulled two stepper motors out of a working IBM dot-matrix printer. One larger, 3v one with 1.8 steps. The other is a smaller, 9.5v one with 7.8 steps. I am more interested in the large one right now. I managed to find out that the large one has center-tapped coils. I also found out that Coil 1 is red-white-brown, coil 2 is blue-black-yellow. I found the schematic below on http://ashishrd.blogspot.com/2007/09/computer-controlled-stepper-motor.htmlI was wondering how this could be adapted to control my motor from a PC program with the ULN2003 (that chip sounds like UT2003)? Here are the complete residences of what I found on the wires with a multimeter, in case that helps. Resistances:Red to Brown: 8 ohms (or 7 some times)Red to White: 4 ohmsWhite to Brown: 4Blue to Yellow: 7Yellow to Black: 4Black to Blue: 4
Topic by l0cke | last reply
Ok i was wondering if anyone can send me a parts list and very detailed directions and how to make a compact servo that i can make lift 150lbs and yes i know its a dawnting task but i have fait in yee becuz idk how to do it myself :\ but whom ever does this will be listed on my finished product and credited on my product thank you and good luck :)
Topic by prini | last reply
I have a few fans around from computers. Seems that 3 wires is pretty common for these. I wasn't sure which was what, so, I figured "nothin to lose" and hooked up the right voltage across 2 wires. My guess was right. It ran. But, having 1 out of 9 fanblades busted off, it shook a bit. So, I busted off 2 more blades to balance it. But now, even connecting it the same way, it doesn't run. So, how should a 3 wire brushless motor fan be wired?
Topic by Toga_Dan | last reply
Hi, I am looking to make a quadcopter as my university project and I kinda run in to some problems deciding which motor I need to choose. I was thinking to choose brushless motors as they are more efficient and they give more RPM. HOwever, my professor says that there's no point using brushless/stepper motors as u can get the same RPMs using brushed motors and its the same thing. Hence, can anyone please guide me which motor is best to use and why should I use brushed or brushless motors. I shall be very glad if someone guide me through it. Thank you :)
Topic by Bam Boy | last reply
I had a 220v angle grinder. It was burnt. I take the rotor of the grinder out. Its completely fine. Now i make a DC motor using this rotor and magnets(for field current). My question is, how much maximum DC volts this motor can take to get the maximum RPM. Because the motor was 220v AC, Will it run on 220v DC?
Question by Shezi007 | last reply
Hi I want to put my nexus 7 into my car but i need to access to my factory radio behind my tablet. So i think about making motorized panel like this : http://www.youtube.com/watch?v=cfOm4K8EeHM http://www.youtube.com/watch?v=DL6PxvwuIyM But i don't understand how make that ? What kind of motors ? Actuator ? Thank !
Topic by Hydr0 | last reply
I was recently in the mood to make a small robot from scratch, however i wanted to be creative and make a clockwork motor as the driving force behind it. however, i do not know how such a motor functions, nor do i have any idea how to create such a device. also as a secondary topic any knowledge on where to procure gears of all shapes and sizes would be highly benificial to this and other projects i have in mind.
Question by Oddmanout06 | last reply
I have recently come into possession of a working vacuum cleaner motor (generic: only says 60 hz, 120 V on the side) with cord and switch still attached (also the fins on the motor that created the suction). I can't even find a manufacturer logo on it. Anyways...I am looking forward to using this in a future project. Just as an exercise, in case I am "thinking too small" what would you do with such a motor? It looks a LOT like this one:
Topic by Goodhart | last reply
I am extremely close to finishing Grathio's Secret Knock Detecting Door Lock (https://www.instructables.com/id/Secret-Knock-Detecting-Door-Lock/). I am about to mount to my door, but unfortunately the clamp (step 3) has not been working out for me, and in no way will the motor be strong enough to turn the lock. Any other suggestions on how to hook up the motor to the door? FYI: my casing is entirely different from that of his instructions. Thank you!
Topic by KGuy | last reply
Hi Guys, I have a 15.6 volt dc motor taken out of a handheld vacuum cleaner. is this suitable to use in a small wind generator as a project with my kids. when i attach it to a power drill and spin it from the shaft i dont seem to get any power generation. If i connect it to a 12v battery is spins real fast. any help would be appreciated sam
Question by sam301 | last reply
I am trying to create 8 motorised lasers that move (ideally randomly) between a 135Ë angle. I doubt with my level of knowledge i will be able to make them move randomly but if i can't just moving back and forth between the 135Ë would have to do.These motors would have to be reversable and travel between 2 points making an arc of 135Ë, I'm looking at making this in the cheapest way possible. By mounting cheap pen lasers onto mini motors and somehow getting them do this. I will need to see the beams of light so unless i can find a better way to used focused light cheaply, i'll have to use a smoke machine or something. Having no real knowledge of this, would it be easily achievable, i would use a microcontroller to make the motor movement random within that 135 degrees but i have no idea how i'd go about it.
Topic by happysnail | last reply
I want ot make a moped, but theres NO WAY im buying those expensive mofo, kits for $200 when i could just as easily build one, i figure all it needs is a motor of 50cc or less(state law says)i figure, a weed wacker is usually ranged from 20CC to 50cc ill try that but so far the most i have found is 32cc, i also figure it will require a chain and a drive train which i can fabricate from another bike. i hear chainsaws are very powerful like 40CC + range which sounds good but im just not sure about de-constructing one of those, if anybody has had any experience with motor bicycle please help
Topic by Rotten | last reply
I'm not sure if this is the right forum, but I was just tryin' to see if I can find some help for some questions I have.The basic story is soon my brother's moving back into my house, limiting me to one 9x10 room rather than the two I have now. I wanted a futon, but I like building things and creating things, so I thought I'd build my own. Then I thought I could motorize it.The concept is the same concept as the automatic windows on many modern cars. Press the button once, the motor goes until it's at the end, and a relay switches and it stops. Simple enough, right?I'm just not sure which parts to use. I saw this, and thought it'd be enough. I think I did the math and it's something like 150-ish pounds per second [torque](referance: http://www.surplusgizmos.com/Oriental-115v230v-AC-125-HP-Induction-Motor_p_110-1473.html )I'm not sure if that's too strong or not strong enough-- or if it'd even work!Now, I already have the design all set out, I know how I can get the futon to work, and the tracks and everything. For the relay, I was thinking of putting 2 metal plates at each end of the track, attaching the metal plates to springs, so once the motor pushes against it, it hits a relay and shuts the engine off.I'm just not really sure how to do any of this. Not really sure what relays I need or anything like that. Any help would be nice. :D
Topic by IDSKoT | last reply
Hello everyone, I was think of turning a normal bicycle into a motorized one. Will taking the motor from an ordinary Table Fan and attaching it to the bike work? I'm planning on running it off a car battery. Any suggestions are welcome :D
Topic by naresh97 | last reply
I'm looking to run two Etek-R PMDC motors from one 700 amp controller. Will a GE series 700 amp controller work? Upon calling the company that offered it today I received-- through proxy-- the response that the compnay carried no permanent magnet controllers. Is there a difference between pm and sw controllers? I was under the impression that both required the same type of control: varying voltages. could the company have confused permanent magnet with pulse width modulation? any explanation is greatly appreciated!
Question by gruffy | last reply
Or is there any current sensing device or module available in the market? I want to monitor the the current [ from +ve terminal of the power supply to motor ] and the current [from motor to -ve terminal of the power supply] please suggest me any method to follow or is there any circuit module or device is in the market. so that I can buy and use them into my project to achieve this goal. Thanks.
Question by FarhanM6 | last reply
I was wondering if it was better than others since i might buy it in a set please answer fast.
Question by rexdino5 | last reply