Motor controlers?

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


Motor Controller

Dear Sir, Can you help me in developing a 24/36 mosfet controller for tricycle? Regards P​

Topic by hgsan   |  last reply


Motor?

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


motor control help?

Ok so first off i just cant wrap my head around this for some reason...... what im looking to do (basically) is have a "pod" turn left and right i want it to be controlled via some type of joystick. i get the mechanics but i just dont understand the electronics. i think i need some kind of pwm motor control. well i just got all the stuff to follow some of the instructables on here but i get nothing.......well i got a smoking pot? no pun intended anyway please someone help

Question by dannyces   |  last reply


Help Motor Control!

Hey guys, I need to create a motor that can have a fader/dial so that I can control its speed (rotations). I figure it must be a simple enough system but I don't even know where to begin in terms of parts. I just need it to be strong enough that I can spin a GoPro camera (fairly light - but not toy car motor weak). Sincerely, Alex

Topic by mrmadsci   |  last reply


controll a stepper motor

Can you controll a stepper motor with push switches no circuit? i need a 12v motor with pllanty of speed  torque for a diy cnc but i want to controll it manualy with a joystick made with push switched can i just apply power to a stepper motor like a hobby 12v dc motor and run it without a circuit?

Question by skullkeeper80   |  last reply


DC MOTOR CONTROLLER

RELATED TO DC MOTOR CONTROLLER (EV VEHICLES) 1: Need for large number of capacitors in the power circuit (store the charge and dissipate to which part of the component mosfet or diodes ??) ? 2: what are diodes parallel to the mosfets for ? ( other than preventing the back emf coming from the motor ) and is it have anything to do with firing angle ? 3:advantage of using many mosfets in parallel than using a single mosfet and on what basis must that mosfet chosen? I am from India a college student pursuing my electronics engineering and making motor controller,i am able to get all the circuit details and how the motor controller works but i have above few doubts

Topic by doraditya   |  last reply


Treadmill Motor Controller

HI, I would like to make a very simple controller my treadmill's Motor. Its MoBo went bad and I dont wanna fork over $200 for a new one. The motor works fine. I just want to make a very basic DC Motor speed controller. I know just a simple Pot or other variable resistor wont do.Will it? I've been messing around with Electronics since I was 9 so I'm not afraid to solder up some circuits even if its a complicated one. Im looking to spend around $50. Thanks.

Topic by AlxMad   |  last reply


Pwm motor control

Please send the circuit of cintroller

Question by avoymaity63   |  last reply


Stepper motor controllers

Does anyone know where I can buy some bipolar stepper motor controllers and an H-bridge in one package? Or even better, schematics/pcb layout of a driver board?UPDATE:Does anybody have any experience with the Easy Driver? It seems like a cheap alternatives to some of the other available controllers, but I just want to know if you get what you pay for.

Topic by ongissim   |  last reply


Treadmill Motor Control

I have a Horizon T101-04 treadmill that has a control problem. The motor is definitely good. I suspect that the motor control board is good, and the control panel board is bad. The control will not reset or go into diagnostic mode. I want to replace either the control panel board or the entire control system. The motor is 90V DC. For amperage, the motor label says "19A S6 25%" which has no meaning that I understand, other than perhaps that the maximum amperage is 19. The label says "APMS" rather than "AMPS", and I wonder if the "S6" is supposed to be "SC" for "stall current." All of the characters on the label are very legible. To replace the entire set of controls, I can use an industrial DC motor control, but how much horsepower does the control actually need to be able to provide? I don't think that the one on the treadmill actually provides 19A, and is probably close to 1 HP or so in its capability.  To replace the control panel with something else and keep the existing motor control, what do I need? Do I need some type of complex driver circuit? Does it need feed back from tach sensor to do a good job of keeping the speed steady?  If it will work well, I want a simple control set up like a KB Electronics KBMD-240D to which I will add a safety cut-off switch with a lanyard.

Topic by Ineedacircuit   |  last reply


Controlling a motor with PWM

I'm building an ROV for the MATE ROV competition with a high school team this year.  For this year's competition, we've decided to control our bot via an Arduino Mega, and we're using PWM to potentiate the thrusters.  As the person designated to electrical, I fortuitously have no idea how to set up an intermediate step from the Arduino to our thrusters.  I've looked into H-Bridges with both Relays and Transistors, and defaulted to the transistor. How would I choose what transistor to use though? I've tried several (all BJTs) and they're giving me nothing but problems.  Should I switch to a FET? Should I use a P type and an N type, or only one?  What specs should I purchase them with?  Do I ask too many questions? Help!  (I'm trying to control a 12V 6A motor with a 5V Pwm signal. Thanks!)

Question by unununium   |  last reply


speed controller ?

You can make a washing machine motor with the module and taco run with a potentiometer switch to give you speed control over the motor I have the planes for a hot point motor but not the motor im using !! does anyone have the no how as to with leads to connect to contact mrkeithg.rumsey@tesco.net

Question by rumsey   |  last reply


stepper motor

Wondering if any one knows how to control stepper motors via Hand wheels. By rotating the wheel you should be able to control the rotation of the wheel either clock wise or ccw. I do not want to interface the motor through a computer.

Topic by rajivraj   |  last reply


Remote controll

I need to remote controll two 12 volt motors each one needs to operate independent of the other and both motors must go forward and back if you have any tips or diagrams on how to remote controll this please leave a comment.

Topic by Redneck2   |  last reply


DC Motor Control Help?

A very long story short, I desperately need assistance in knowledge with some motor control. I need to control 2,DC 6v motors with encoders that include 6-pin 2.0mm pitch PH JST cables that break out motor inputs. The bottom line would be what do I need to control these motors, to go forward and reverse, and operate it from a wireless controller? I appreciate any and all help! Also, this is our motor: http://www.trossenrobotics.com/p/Robot-DC-Gearhead-Motor-6v180rpm.aspx

Question by NickWeav   |  last reply



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?

Topic by GamanM 


SATA DVD motor control

Hi, how can I control the main motor from SATA pins directly? The point is just simply make it spin. Like this: http://www.youtube.com/watch?v=ZTSFZ7pQfNY ...or if someone can explain what bridges to make in circuit itself.

Question by Futuman   |  last reply


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.

Topic by Squibo   |  last reply


Radio Controlled K'nex Motor

I have finnaly found someone selling an RC knex set!!Have a look http://www.trademe.co.nz/Toys-models/Lego-building-toys/Knex/auction-193940887.htm

Topic by ajleece   |  last reply


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 

Topic by firezone   |  last reply


controlling speed of dc motor Answered

Hey guys I'm trying to finish a project.  I have a motor thats making a 5 gal bucket spin, I would REALLY like to be able to control the speed but I'm not sure how to go about it.  Right now it's spinning extremly fast and to unstable The motor I used is decently small cgi.ebay.com/DRIVE-MOTOR-DC-GEARMOTOR-12VDC-DRIVE-SYSTEM-NEW_W0QQitemZ300327674056QQcmdZViewItemQQptZBI_Robotics I've read similar problems and ppl suggest PWM what size do I need for the motor I have?

Question by micha3l87   |  last reply


Motor type / Arduino control

I am looking for a motor to control via Arduino. I know such a thin exists but am not sure exactly what it's called. Basically it is a motor but instead of rotating a shaft it make the shaft go in and out. It doesn't need to apply much pressure just a little tap. I thought it might be called an actuator and is similar to a solenoid I suppose. Any idea where I would find such a thing, what it would be called and how to control via Arduino. Thanks. Phil

Topic by filthyPhil   |  last reply


Photocell Controlled Vibrating Motor

I'd really appreciate some help with a simple experiment I'm doing. I'm trying to wire up a CdS photoresistor to control the speed of a vibrating motor based on black/white marks on paper. I wired it up with a transistor, but it didn't seem to have much (if any) effect when I covered the photocell or shined light on it. Any help?

Topic by pharoah 


ac motor speed control

My uncle recently gave me a compact, functional ac motor with an axial blower attached to it. its a pretty cool thing, and i am planning on putting it in my mac's plexi case (when its built). i have no clue how to vary the speed. from what i found on wikipedia, an inductance motor cannot have speed control. how do i know if this motor is brushed or inductive?? and if its brushed, how do i vary its speed? help!!??

Topic by tech-king   |  last reply


Controlling a 12v Wiper Motor?

Hi all, I'm a bit of a noob with electronics and wondered if anyone could help me with a project, I would like to control the speed of a wiper motor for use in a small powered saw. Ideally using mostly the upper end of the motors speed, are there any cheapish products I can buy off the shelf to wire together to give me (UK) mains power going in and the max safe voltage/amperage out to run the motor, plus speed control. I say max voltage/amps as I have read elsewhere that the motor can handle a bit more than just 12v. I have searched a good few electronics kit sites and found things that sound like what I want, but I guess I'm just not sure if it actually is. As always I would be grateful for any help.

Question by Squibo   |  last reply


DC motor speed controling Answered

HI! I'm trying to mod my Tascam cassette recorder. I want to be able control speed of the motor. So I bought on ebay PWM controller and after installation thing don't run so smooth as I wish. the problem is ... when pot is all the way down at 7 clock motor is off, when I turn it to 8 a clock motor starts spinning and reaches its full speed at 9 a clock. and from 9 a clock to 4 there is no effect on speed. Please help me! .... my electronic skills are too weak to understand this. p.s it is 12v dc motor and there is link for the pwm I use. http://www.ebay.co.uk/itm/111817741979?_trksid=p2057872.m2749.l2648&ssPageName;=STRK%3AMEBIDX%3AIT Thanks

Question by AndrisT1   |  last reply


Universal stepper motor controller

I wanted to create a universal stepper driver that is capable of driving a stepper of 250w rating at 20A current and a load voltage of 12V . Does anybody have an idea of how to go about it ? . Please do guide me if you have any ideas .  Also this drive should be capable of being used for bipolar as well as universal stepper motors.

Topic by arjunv8   |  last reply


Normal motors working as a stepper motor?

Hey folks, I have an arduino(Also l293d motor control) and I was wondering if I could use my normal motor just like a stepper motor by creating a funtion and using "delay" as a mode to control the rpm of the motor

Question by cthaliyath   |  last reply


How to control the speed of this motor ? Answered

I have this spare Dayton Shaded Pole Motor that I would like to use for a project.  When the motor was removed, just two wires are attached to it to which I attached an adapter plug.  When plugged in to a wall outlet, it obviously runs at only one speed.  I was wondering how I could control the speed of the motor thus enabling me to lower the speed.  Would it be possible to add a dial to lower the speed?   I saw a video on youtube titled How to make a Simple Speed Controller (link: https://www.youtube.com/watch?v=0YZJ0kJEmh0) and was wonder if this would work for my motor? In the video, the guy uses a Switch, project box, and potentiometer.  However, should a rheostat be used instead? (someone posted that in the comments to the video) So, let me know what you think, and how I should go about doing this. Here are the specs of the motor: 1/40 HP 1550 rpm 115V 60 Hz 1.1 Amp Class A Ins, 40 degree C Max. Amb. Cont. Duty Thank you.

Question by Schaf77   |  last reply


how to control stepper motors?

With pic if possible

Question by alfcreatevi   |  last reply


Stepper Motor Controller Problem

I recently set up an Arduino Uno, stepper controller, stepper motor, and power supply. Connected the motor to a shaft on a device I`m making and was able to turn the shaft as I wanted.The controller was a TB6600 that I borrowed from a friend. Received 3 new controllers from Ebay and swapped the new one for the borrowed one. Tried all 3 controllers and none worked. Any ideas on what`s wrong or should I just return them and buy 3 more from someone else?

Topic by JimZ19   |  last reply


Regen Braking Motor Controller

Good morning.... Quick question regarding motor controllers with the facility of regen braking..... For a project of mine I am creating an EV (with a dune buggy chassis), which needs a system to recharge the batteries when been driven or 'towed' by an external force. I've been looking at a 4QD motor controller, which has the regen braking system already built in. My idea is to use the back EMF to charge the batteries. This in theory is quite similar to regen braking, having done a bit of research, and also with some info from the 4QD site itself. I know that if the back EMF is to great, I risk damaging the motor controller. But if there was a way to regulate the back EMF (either by controlling the speed it is been externally driven or with use of electronic circuitry), could I essentially recharge the batteries using this motor controller???! Thanks in advance, Dave

Topic by D__Humphreys   |  last reply


Arduino Motor Control Shield

Hi! I am having trouble with two motor control shields. 1 - Arduino motor control shiels                                               // Hole-through devices  2 - Adafruit motor control shield V2                                         // SMT devices My problem is the installing the libraries.                                // will not compile,  need an AFM !!! I have done this before, but every now and then I'll get stuck or confused doing it.                    I've read the tutorials and seen the Youtube, what can I say I'm still stuck.                          // simple get hard sometimes I normally build my own circuits and programme them, but lately, I'm buying them already made and most of them need a library. . If anyone can help me I sure would be thankful. Thanks Frank G.   

Topic by 56Frank   |  last reply


DC motor speed controling

HI!  I'm trying to mod my Tascam cassette recorder. I want to be able control speed of the motor. So I bought on ebay PWM controller and after installation thing don't run so smooth as I wish. the problem is ... when pot is all the way down at 7 clock motor is off, when I turn it to 8 a clock motor starts spinning and reaches its full speed at 9 a clock. and from 9 a clock to 4 there is no effect on speed. Please help me! .... my electronic skills are too weak to understand this. p.s  it is 12v dc motor and there is link for the pwm I use.  http://www.ebay.co.uk/itm/111817741979?_trksid=p2057872.m2749.l2648&ssPageName;=STRK%3AMEBIDX%3AIT Thanks    

Topic by AndrisT1   |  last reply


DC Motor speed controler

Hi all Can anyone suggest the best way to replace the variable speed trigger of a 18v battery drill, with a remote from the drill adjustable speed control. I want to control the speed and have it stay at the setting until I turn it off or adjust the speed. The drill will be clamped to a board with no battery and powered by a power supply. Thanks for any advice Les

Topic by Les1951   |  last reply


Do PMDC motors and SWDC motors require different motor controllers? Answered

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


Arduino and Servo Motor Control

I was wondering if I could control higher voltage servos (lets say off a 18v battery, more than my arduino board can handle) by building a separate circuit for my servos power and ground wires and putting my servo's Input/output (or pulse if you prefer) wire directly into the arduino board's sockets.  Would this a) damage my arduino? and/or b) effectively regulate servo positioning? (fritzing file attached).   Or would I be forced to use relays?        Thanks, Authority28

Topic by authority28 


dc motor speed control

I need help regulating the speed of a simple dc hobby motor. i understand that i should be able to do this with a variable resistor/potentiometer but while it does work, it only does so when the wiper gets really close to one end. how do i even it out? i also must admit i don't understand complex electronics and wish to find a simple solution. any help is much appreciated.

Topic by synthetic_iron_oxide   |  last reply


Controlling a motor with a touch screen ?

So i am trying to control a motors speed using PWM (running through a transistor). I know how to make that happen but i am unsure how to use a touch screen to control the motor,  I have one of the test codes that is a touch pad 0-9 with enter and clear. I was wondering if there was a way that i can punch the number in push enter and have the motor run at that speed(starting with just 0-255) The touch screen is 3.2LCD TFT Touch Screen SD Reader http://www.ebay.com/itm/SainSmart-Mega2560-3-2-TFT-LCD-Shield-Touch-Screen-SD-Reader-4-Arduino-2560-/280930557613?pt=LH_DefaultDomain_0&hash;=item4168c41ead The code is // ITDB02_Touch_ButtonTest (C)2010 Henning Karlsen // web: http://www.henningkarlsen.com/electronics // Modified to work with UTFT on Mega w/Arduino 1.0.1 (C)2012 Otmar Ebenhoech, // // This program is a quick demo of how create and use buttons. // // This program requires the ITDB02_Graph library (8bit mode) // or ITDB02_Graph16 (16bit mode). // // It is assumed that the ITDB02 module is connected to a // ITDB02 Shield, a ITDB02 Mega Shield or that you know how // to change the pin numbers in the setup. // #include #include // Declare which fonts we will be using extern uint8_t BigFont[]; // Uncomment the next line for Arduino 2009/Uno //UTFT myGLCD(ITDB32S,19,18,17,16);   // Remember to change the model parameter to suit your display module! //ITDB02_Touch  myTouch(15,10,14,9,8); // Uncomment the next line for Arduino Mega UTFT myGLCD(ITDB32S,38,39,40,41);   // Remember to change the model parameter to suit your display module! ITDB02_Touch  myTouch(6,5,4,3,2); //// //// ////   ////THIUS IS WHAT I ADDED ETK int motor = 9; ////    //// //// //// int x, y; char stCurrent[20]=""; int stCurrentLen=0; char stLast[20]=""; void setup() {//// //// //// //// tHIS IS WHAT I ADDED ETK pinMode (motor, OUTPUT); //// ////   ////    //// // Initial setup   myGLCD.InitLCD(LANDSCAPE);   myGLCD.clrScr();   myTouch.InitTouch(LANDSCAPE);   myTouch.setPrecision(PREC_MEDIUM);   myGLCD.setFont(BigFont);   myGLCD.setBackColor(0, 0, 255);   // Draw the upper row of buttons   for (x=0; x<5; x++)   {     myGLCD.setColor(0, 0, 255);     myGLCD.fillRoundRect (10+(x*60), 10, 60+(x*60), 60);     myGLCD.setColor(255, 255, 255);     myGLCD.drawRoundRect (10+(x*60), 10, 60+(x*60), 60);     myGLCD.printNumI(x+1, 27+(x*60), 27);   } // Draw the center row of buttons   for (x=0; x<5; x++)   {     myGLCD.setColor(0, 0, 255);     myGLCD.fillRoundRect (10+(x*60), 70, 60+(x*60), 120);     myGLCD.setColor(255, 255, 255);     myGLCD.drawRoundRect (10+(x*60), 70, 60+(x*60), 120);     if (x<4)       myGLCD.printNumI(x+6, 27+(x*60), 87);   }   myGLCD.print("0", 267, 87); // Draw the lower row of buttons   myGLCD.setColor(0, 0, 255);   myGLCD.fillRoundRect (10, 130, 150, 180);   myGLCD.setColor(255, 255, 255);   myGLCD.drawRoundRect (10, 130, 150, 180);   myGLCD.print("Clear", 40, 147);   myGLCD.setColor(0, 0, 255);   myGLCD.fillRoundRect (160, 130, 300, 180);   myGLCD.setColor(255, 255, 255);   myGLCD.drawRoundRect (160, 130, 300, 180);   myGLCD.print("Enter", 190, 147);   myGLCD.setBackColor (0, 0, 0); } void updateStr(int val) {   if (stCurrentLen<20)   {     stCurrent[stCurrentLen]=val;     stCurrent[stCurrentLen+1]='\0';     stCurrentLen++;     myGLCD.setColor(0, 255, 0);     myGLCD.print(stCurrent, LEFT, 224);   }   else   {     myGLCD.setColor(255, 0, 0);     myGLCD.print("BUFFER FULL!", CENTER, 192);     delay(500);     myGLCD.print("            ", CENTER, 192);     delay(500);     myGLCD.print("BUFFER FULL!", CENTER, 192);     delay(500);     myGLCD.print("            ", CENTER, 192);     myGLCD.setColor(0, 255, 0);   } } // Draw a red frame while a button is touched void waitForIt(int x1, int y1, int x2, int y2) {   myGLCD.setColor(255, 0, 0);   myGLCD.drawRoundRect (x1, y1, x2, y2);   while (myTouch.dataAvailable())     myTouch.read();   myGLCD.setColor(255, 255, 255);   myGLCD.drawRoundRect (x1, y1, x2, y2); } void loop() {   while (true)   {     if (myTouch.dataAvailable())     {       myTouch.read();       x=myTouch.getX();       y=myTouch.getY();             if ((y>=10) && (y<=60))  // Upper row       {         if ((x>=10) && (x<=60))  // Button: 1         {           waitForIt(10, 10, 60, 60);           updateStr('1');         }         if ((x>=70) && (x<=120))  // Button: 2         {           waitForIt(70, 10, 120, 60);           updateStr('2');         }         if ((x>=130) && (x<=180))  // Button: 3         {           waitForIt(130, 10, 180, 60);           updateStr('3');         }         if ((x>=190) && (x<=240))  // Button: 4         {           waitForIt(190, 10, 240, 60);           updateStr('4');         }         if ((x>=250) && (x<=300))  // Button: 5         {           waitForIt(250, 10, 300, 60);           updateStr('5');         }       }       if ((y>=70) && (y<=120))  // Center row       {         if ((x>=10) && (x<=60))  // Button: 6         {           waitForIt(10, 70, 60, 120);           updateStr('6');         }         if ((x>=70) && (x<=120))  // Button: 7         {           waitForIt(70, 70, 120, 120);           updateStr('7');         }         if ((x>=130) && (x<=180))  // Button: 8         {           waitForIt(130, 70, 180, 120);           updateStr('8');         }         if ((x>=190) && (x<=240))  // Button: 9         {           waitForIt(190, 70, 240, 120);           updateStr('9');         }         if ((x>=250) && (x<=300))  // Button: 0         {           waitForIt(250, 70, 300, 120);           updateStr('0');         }       }       if ((y>=130) && (y<=180))  // Upper row       {         if ((x>=10) && (x<=150))  // Button: Clear         {           waitForIt(10, 130, 150, 180);           stCurrent[0]='\0';           stCurrentLen=0;           myGLCD.setColor(0, 0, 0);           myGLCD.fillRect(0, 224, 319, 239);         }         if ((x>=160) && (x<=300))  // Button: Enter         {           waitForIt(160, 130, 300, 180);           if (stCurrentLen>0)           {          for (x=0; x             {               stLast[x]=stCurrent[x];             }             stCurrent[0]='\0';             stCurrentLen=0;             myGLCD.setColor(0, 0, 0);             myGLCD.fillRect(0, 208, 319, 239);             myGLCD.setColor(0, 255, 0);             myGLCD.print(stLast, LEFT, 208);             ////             ////              ////             ////THIS IS WAHT I ADDED ETK             analogWrite(motor,stLast);             ////             ////              ////             ////           }           else           {             myGLCD.setColor(255, 0, 0);             myGLCD.print("BUFFER EMPTY", CENTER, 192);             delay(500);             myGLCD.print("            ", CENTER, 192);             delay(500);             myGLCD.print("BUFFER EMPTY", CENTER, 192);             delay(500);             myGLCD.print("            ", CENTER, 192);             myGLCD.setColor(0, 255, 0);           }         }       }     }   } } The stuff i added has these //// on top and bottom with a comment "THIS WAS ADDED  ETK" the part that dont work is "analogWrite(motor,stLast);" and stLast is a char so it give me char to int error. And as you can tell i am no good at this so anything that can point me in the right direction would be greatly appreciated ETK

Question by etkoehn 


Stepper Motors..

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


AC Power Phase Control?

Hello, Can we use AC phase power control Solid State Relay to control the speed of single phase Induction motor, Using PWM as input to the Relay and the output of relay connected to Induction motor, The motor runs at 220v AC,50Hz,55Watt.

Question by KaroonjharN   |  last reply


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

Topic by pmills4   |  last reply


Mobility Scooter Control?

I am looking to power a kart with a mobility scooter motor and transaxel. The motor controls start at about £135, but you can get just the pot for about £30. I'm only going forward, so do I need the entire controller, or will just the pot do the job?

Question by pip.cartwright.3   |  last reply


How can I sequence several small motors. Answered

Wife approved Home Theater ​I plan to build raised panel cabinets that also hide home theater speakers and 60" screen. Open display/bookshelves sit between the speaker garage and the 60" screen. The raised panel (I'll make with my 5hp shaper) covering the speaker will roll over the display cabinet allowing the speakers to move out into the room on motorized platforms. Then, the speakers will rotate on a motorized turntable  to the desired position. Next, the two panels covering the screen will move under the speaker panels and also cover the display cabinet plus a little of the garage space. I want this to all be initiated with the push of a button. The motors will all be sequential in the above order. First, the speaker panel can roll until it hits a button, next, the speaker platform movement could be controlled by motor revolutions as in a stepmotor and would stop the platform at the right spot. When this action is complete, the speaker rotation could also use a step motor count. Next, the two screen panels will roll under the speaker panels until they hit a final stop button. I will need a central controller to manage the sequence order. I am familiar with Fishertechnik robotics controllers but I'm hoping that someone here can give me some suggestions to make this work. Thanks for reading. Chuck

Question by oneartist   |  last reply


Easy/cheap way of halving the mains fequency in order to halve the speed of a single phase electric induction motor?

The problem is to slow the speed of an electric grinder down so that it does not burn woodturning HSS chisels during sharpening. I thought of full wave rectifying the mains and feeding it to a so-called "H-bridge" consisting of four SCR's. The SCR's on the top and bottom opposing sides are triggered together as pairs. Each pair of SCR's are triggered for two consecutive half cycles and so on. Might this work?

Question by hermanza   |  last reply


Computer Control

I would like to know how to control the speed of a small DC motor via serial or USB. I have general electrical and programming knowledge, but I have no idea how I would do this. I have found http://www.lvr.com/usb.htm..Any help?

Topic by Crash2108   |  last reply


Need help with AC motor

What is a low cost way of vary a 2 pole ac motor? I know a vfd can handle the job, but I am looking for a way under $100. Also can someone help me out with some wiring. If I have a 120 VAC motor plugged into the wall, how would I reduce the voltage enough to run LEDs off the same supply wire? In other words, I only want to have 1 plug and run a motor and LEDs at the same time. Any help would be greatly appreciated.

Topic by cory_tripp   |  last reply


speed control for A-C electric motor

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? Thanks in advance!

Topic by mario-alonzo   |  last reply