A common actuator in robotics; it's usually made of a static magnet (stator) and a set of moving inductors, acting as electromagnets, connected to the circuit through brushes. Brushless motors use phased clocks with electronic circuitry to generate motion.

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19 views

what type of modification can i use in my MCU in conjunction with my SSC32?

Hello there guys im looking for a way to connect and use a DC motor with a Servo controller such as the SSC32? now given the fact that a Servo controller or driver has 3 pins, PWR GND SIG/PULSE now ...
2
votes
1answer
54 views

Freewheel diode / capacitor with this board?

With DC motors, it is common to put a freewheel diode and/or a capacitor in order to protect the equipment as the motor can induce current into the system. I plan to use this board to control a 24V ...
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3answers
57 views

Starting a DC motor

I am driving a DC motor working at 3V with an ATmega8 via a bipolar transistor. The problem is that the motor needs a push to start working. What can I do to solve this problem? This is the circuit ...
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2answers
49 views

Converting a DC motor to a generator

Can ANY DC motor become a generator if torque is applied to the shaft? example: http://www.wikihow.com/Produce-Electricity-from-a-DC-Motor And by any, I mean the really cheap ones too. Or is there a ...
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2answers
63 views

Unidirectional motor control

I am interested in controlling the speed of multiple small DC motors that will draw at most 1 amp each. I only need to run them in one direction, so an H-bridge IC like the SN54410 seems like the ...
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2answers
65 views

switching DC trolling motor to generator

Would like to drag the trolling motor prop while sailing to re-charge the battery. The trolling motor is 12 VDC and the max amps at full forward speed is 50. The sailing speed of the boat will turn ...
0
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1answer
14 views

Driving 3V motor, BDX53C

Briefing: Trying to drive a 3V motor with gearbox, using TM4C. Motor specs are given below. First tried with 2N2222A, later plugged motor directly in to LF33ABV voltage regulator. On both setups, ...
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2answers
41 views

Two unidentical DC motors connected in parallel with different loads

Two DC motors (Brushed PM Micro) are attached to a voltage source by using a single wire (1mtr). Motors are then connected in parallel (two seperate but same spec. wires, each 1ft in length).For ...
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0answers
55 views

Circuit components work individually but not together (buck converter and h bridge)

I need to regulate 15V to 12V to power a 12V motor. Additionally, I am using an h bridge so I can control the direction of the motor. Thus, our power path is 15V supply -> buck converter (12V out) ...
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0answers
29 views

How to wire an LMD18200 and an arduino? [migrated]

Ive been working with a motor project for a while and i bought this H-bridge(LMD18200). I dont understand how im supposed to connect it to the arduino. Here is the datasheet for the lmd18200:
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2answers
67 views

Why is an H bridge needed in a bidirectional motor control circuit?

I'm trying to understand figure IV in this article about controlling motors, and I do not see why the H bridge is needed. As best as I can tell, this is so that if the motor is stopped (by making the ...
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1answer
39 views

How to make rechargeable trimmer work without battery? [closed]

I had a rechargeable beard trimmer which was out of work as battery was not charging anymore so yesterday I took out the rechargeable battery and decided to run it directly. As motor needed dc current ...
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3answers
95 views

Is resisting DC motor bad for it?

If I keep the shaft of a DC motor in place while it is running does this harm it in any way? Is it bad for it at all?
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1answer
812 views

How to measure the maximum weight that a DC motor can move?

We are working on a computer-controlled electric vehicle project which is based on an ATV chasis. While I was looking for a DC motor to move this vehicle (which is estimated to be 350kg), I found an ...
0
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1answer
44 views

Dc Motor Position Control

I am driving dc motor with drv8848. I send pwm pulse to the drv8848 and then ı read encoder value. My pwm frequency is 500 Hz. So here is my problem, pulse count is same but encoder value is ...
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1answer
58 views

How to convert Clock signal to PWM signal?

Let's say i have a clock signal which i control its frequency making it going from 10Hz to 1000Hz. And i want to convert this to PWM signal, so that 10Hz gives 0% duty cycle and 1000Hz gives 100% ...
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0answers
44 views

Overcoming rotor magnetic field when magnetizing stator in a Halbach motor

I am currently building a high static torque motor using electropermanent magnets arranged in a circular Halbach array as so: I've coiled magnet wire around the 12 alnico magnets making up the ...
0
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1answer
59 views

H-Bridge driver circuit design

I have built the following H-bridge driver circuit (The red resistors R9 and R10 were not included). However during testing I have found that I am constantly blowing the high side P-Channel MOSFETS ...
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3answers
64 views

Little confusion about dc motors

So for whatever reason I'm having a little bit of a problem understanding why every dc motor explanation says the current switches after every segment in the armature. I mean the current is going to ...
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0answers
66 views

Catastrophically failed IC + mysterious melted metal in my motor

Yes, this is another question involving the cassette player motor mentioned in my last question. I decided to open the motor, a 'Mebochi' (not Mabuchi, which may or may not be important) ...
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1answer
75 views

Type of diodes for a particular application

Read some of the other answers, some of them are not easy to read (I'm not a specialist), some others do not fit my application. A pretty simple system two brushed motors, each takes between 12V to ...
0
votes
1answer
110 views

Get rid of back emf in motors

I am controlling motor speed by using PIC16F877A and L298, but motors give Back EMF which can burn the microcontroller. To avoid back emf, I have 3 options: Diode. Darlington pair. Optocoupler. ...
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1answer
64 views

Are relays appropriate? circuit review

I'm designing a circuit to drive two 12V dc motors. I've got two low current switches connected to relays as can be seen in the schematic. These are for power isolation and local motor isolation. Can ...
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1answer
65 views

Metal sleeve around cassette player motors?

I have recently taken apart a few cassette players to get motors, and I have noticed there is always a metal sleeve around the main drive motor. Here is an Ebay product photo showing this on a ...
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1answer
56 views

Use of a bulk capacitor with a 5V MCU controlled motor circuit

I have a circuit as such that will ultimately be used for a remote controlled race car: I have a 5V power regulator (SMPS) to take 4 AA batteries to 5V. With this, I will power a Raspberry Pi, a DC ...
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2answers
75 views

Arduino hacked rc car, H bridge, logic voltage overwhelmed

I have hacked my old rc car like in this tutorial here I have measured manually the h bridge logic voltage (the voltage that the transceiver send to the h bridge) , which is 3.7volt in the ...
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votes
2answers
36 views

Effects on motor encoder by over-volting

I'm using Maxon RE-max 17 4.5W 12V DC motor with encoder attached for my research. Currently I'm using up to 18V for the voltage input to get a better rotation speed and torque. My questions: Is this ...
3
votes
3answers
122 views

Practical Approach for getting maximum Power from a DC motor

Theoretically, a DC Machine achieves its maximum Power when back emf is equal to half the applied voltage. Why this condition is not realized in practice ? What is the Practical Approach for getting ...
1
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1answer
37 views

Multi-plex 8 BLDC motors using shift registers?

I want to drive 8 tiny diskmotors - they look like low current motors. robotshop 2mm vibrating disks I want to drive perhaps 2 or three of them at a time with pulse-width modulation signals and I ...
1
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2answers
66 views

Is this a viable mini wind turbine setup?

I'm going to build my first wind turbine. I have already constructed the prop, 5 blades 50cm long from PVC pipes. I've searched for a decent sized motor and charge controller. The turbine will be ...
-1
votes
0answers
37 views

how to control a 12v dc wiper motor with raspberry pi?

I am going to use raspberry Pi for the first time and am looking forward to any suggestions which describes whether a raspberry pi can be used for controlling a 12v Dc wiper motor or not. If yes, how? ...
0
votes
2answers
59 views

3V DC Motor - 9V Battery?

I recently bought a 3VDC 350mA (13800RPM) motor. Only problem is, I can't seem to find a way to power it. I have a 9V battery, can I use this to power it? If not what do I need to do to power it ...
0
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2answers
74 views

Will this raspberry pi circuit work?

simulate this circuit – Schematic created using CircuitLab Will this circuit work with the raspberry pi and will the rpi be safe? I want the motor to turn on when GPIO_2 is set high. It ...
0
votes
3answers
76 views

Help with low-pass filter and TTL logic interface

I am working with a motor control board which controls a DC motor (speed and direction). This board uses two SPDT relays for direction, and some sort of PWM for speed. Here's an abbreviated ...
0
votes
1answer
89 views

very low power h bridge

I am trying to direct a bi-directional dc motor that is about 1.5v (i got it from a micro servo and it is about half the size of a 130 dc motor at 1.5 - 3v) with the smallest power source/battery ...
0
votes
2answers
58 views

Replace potentiometer in Dart Controls 90vdc motor controller with raspberry pi

My existing setup: Rae Corporation gear motor (90vdc, 4.5amps, 120rpm, 150 in/lb torque, Part number 6040042). I can't find a datasheet, but it looks a lot like this Dart Controls motor controller ...
1
vote
1answer
57 views

Is over-volting a motor just a little bit likely to affect its lifespan?

So, I have a DC marine water pump. It's typically rated for "12v" lead acid batteries, so it should be designed for around 13.5v. I am going to be pwming it and monitoring the current, with a base ...
-1
votes
2answers
145 views

Modifying a thermostatic radiator valve for micro control

The photo below shows a electrical thermostat controller. The upper part is the motor with a gear. The motor has two wires attached. A red and a black one for the current. What this component does ...
0
votes
1answer
84 views

Why this simple DC Motor + PWM circuit is not working?

I have the following circuit to adjust the speed of a DC motor based on PWM signal (Arduino, 5V) applied to the base of a BJT transistor, but it's not working. The motor doesn't move but I do hear a ...
-1
votes
1answer
143 views

Can C547B transistors be used to build H-Bridge?

I've collected many C547B transistors from an old UPS, Can I use these to build h-bridge to control DC motors from Arduino?
0
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2answers
79 views

Supplying more current to a current limited DC motor

simulate this circuit – Schematic created using CircuitLab Added requested schematic. Current circuit is on the left. Proposed additional circuit is on the right. I've never seen two ...
1
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0answers
55 views

What is ment by front and back pitch of an armature winding?

I searched the internet for these definitions and found a common definition in all websites: Back Pitch- A coil advances on the back of the armature. This advancement is measured in terms of ...
-3
votes
1answer
63 views

How to use solar panels in a electric go kart?

I am entering a electric go kart competition. Below are the electrical specification of my go kart. 1hp DC Motor. Normal batteries used in motor bikes (48 volts in total) And solar panels And i am ...
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vote
1answer
82 views

Connecting a 12v relay to microcontroller circuit

I am trying to build an automatic plant watering system using ATmega16. We are using moisture sensor for our project. The circuit diagram is as follows: We are using the following 12V relay: I ...
0
votes
1answer
90 views

Designing a brushless DC motor:

I watched a DIY video recently on building a brushless DC motor. Can someone demonstrate for me how to calculate the max torque & max rpm of that motor based on the components that are used in ...
0
votes
1answer
58 views

12V DC Motor Attachments

I have an Arduino that I am running two DC motors off of. I have the L298N motor shield that I am using to power the motors. Now that I have the system hooked up and running, I want to add the next ...
0
votes
2answers
50 views

Controling torque generated by DC motor?

I am new to this field so spare me if I am asking something wrong. I have a battery of around 48 volts and a dc motor of 2hp. So I was thinking is there a way to increase the torque generated by the ...
1
vote
1answer
40 views

DC Motor + Pull Solenoid + 2 Microswitches — Rigging and Timing Question?

so my senior design group at UCF needs some help with the electrical engineering aspect of our project as we are all ME majors and lack confidence in this area. Our design is driven by a DC gear ...
2
votes
2answers
100 views

Brushed or Brush-less DC motor

We are trying to build a small Solar car the car's dimensions (Length :100CM, Width 60CM) the car mass is not going to exceed 2KG The car speed can be up to 2.5 or 3 m/s We`ll be using PV modules ...
0
votes
3answers
50 views

How to verify the reliability of torque rating of DC motors given on online sites?

I have to decide the motors to be used for my robotics project, but while searching for the DC motors I have found out a rather unusual fact that I can find several motors who provide the same torque ...