An electrical actuator converting electrical energy into rotational motion.
-1
votes
3answers
69 views
Controlling Microcontroller using Visual C# [closed]
I want to control some motors from the Microcontroller but I want to control the Microcontroller from the computer using C# or at the very least get some feedback to the computer
How can I do that ...
0
votes
1answer
19 views
How to Control SM1 Inverter Drive Frequency with Arduino?
I am back at trying to control the frequency of an SM1 AC inverter drive due to the fact that I never got it going the first time. However, this time I would like to use an Arduino. The manual for the ...
2
votes
3answers
67 views
Substitute a MOSFET in a motor controller
I'm trying to build a CoffeeBot from MAKE magazine, and I had a question about one of the components. The circuit is pretty simple; it uses an Arduino to control a gear motor via a MOSFET transistor. ...
4
votes
4answers
73 views
What are the factors that significantly affect the life span of a DC motor?
I'm currently planning to run a DC motor continuously on solar power. So I would like to know which things I should be very careful about for optimum lifespan of the motor. I found the following two, ...
0
votes
0answers
50 views
Choosing the correct brake resistor for DC motor
I have a DC motor running on 24VDC rated 150W (~6,25A), how do I calculate the correct brake resistance?
2
votes
1answer
41 views
What type of stepper motor should I use in my project and how do I control them?
I'm building a video camera pan and tilt head. Here's what I'm getting at:
I'll need one motor to control the horizontal rotation of the camera, and one for the vertical. The horizontal motor ...
1
vote
0answers
38 views
SEM Permanent Magnet DC Motor DPM 30R4 1500RPM 24VDC Output: 0-25kW & Brake
I am in the plannning stages of a project to build a pig rotiessiere. I have the above mentioned motor, but I am unsure of what type of power source is needed to run the motor and what can I do to ...
2
votes
1answer
74 views
Control old printer motor with position ring
I purchased two old printers at a garage sale today in hopes of dismantling them and playing around with some stepper motors. After tearing both of them apart I discovered that there are no stepper ...
2
votes
3answers
77 views
Slowly turn a planisphere at the sidereal rate
My problem is to rotate a planisphere (a star chart) at the sidereal rate.
I will set the planisphere to its initial position manually, then turn on some device which rotates the planisphere on its ...
1
vote
1answer
89 views
Speed control for high power DC brushed motor
I am going to drive and bi-directionally control the speed of some 12V/24V, 100W to 300W DC brushed motors.
I have some experience in controlling small DC motors (6V/9V/12V, 0.5A to 2A) with PWM ...
1
vote
2answers
63 views
simple h-bridge polarity reversal
I am trying to reverse the polarity on a rather beefy motor (5 amp, 60v) in the most simple way possible.
I need to build an h-bridge just to reverse the current, I am controlling speed elsewhere. ...
2
votes
1answer
80 views
How to connect a pulled motor from a printer to Breadboard and control with raspberry pi? [closed]
I managed to salvage a couple of motors from a worn down old printer, and I'm unsure of how to get about connecting it to a breadboard and then to a Raspberry Pi. I've got a cobbler kit for my Pi that ...
0
votes
2answers
84 views
Battery powering an unknown DC motor
I know nothing about motors. I have DC motor (sealed in a casing) that uses 6v/12v 1a (mains switching power supply) with 2.1x5.5mm DC connector. It has variable speed controller, reversible ...
1
vote
0answers
113 views
L298N shield gives relatively low ouput voltage and current
I am using a L298N shield together with an Arduino to drive a 42mm 2 phases bipolar stepper motor. The driving voltage for the motor is 12V and the logic voltage for Arduino and the L298N shield is ...
0
votes
1answer
45 views
Motor Driver, increase output voltage
I have a sabertooth motor controller and it is rated max 33v input. I need (at max) almost double that on the output. Can I hook up one of these to the output port, between the sabertooth and the ...
1
vote
0answers
33 views
Why do my outputs look exactly the same for the Allegro 3901?
I am trying to capture results shown in Figure 8 of Allegro 3901 data sheet .
My circuit looks like this:
The channels above coresspond to the oscilloscope screen captures below:
In the image ...
-2
votes
1answer
66 views
Should all SATA HDDs spin up without SATA cable? [closed]
I've got a Western Digital WD3200AAJS HDD and am trying to spin it up (I don't really need it as an HDD, I need just its motor to work).
After connecting the power cord it didn't spin up, so I am in ...
3
votes
1answer
88 views
What is the function of a capacitor in a motor circuit?
I read a manual of how to connect a speed controller to a motor. I see there is a capacitor as shown below. My question is what the function of the capacitor is? Thanks
5
votes
3answers
204 views
op-amp vs direct control
I'm experimenting with small motors (just building useless toys so far) and I'm wondering what benefit there would be to using an op-amp to control a motor (top circuit) vs just controlling the motor ...
0
votes
1answer
65 views
Interactive Art with Wooden Mirrors - How are the pixels controlled?
http://www.youtube.com/watch?v=BZysu9QcceM
This video shows a mirror made up of moving wooden pieces. Please have a look. He achieves different intensity levels by motion of the wooden pieces and ...
1
vote
2answers
72 views
Correct AMPS & volts for DC motor controller
I'm definitely an amateur hobbyist, but I need to fix something for a friend.
I have a existing DC motor and the controller is shot. The motor is rated at 0-90 VDC (5Amps)
I wanted to see if this ...
1
vote
1answer
42 views
PWM npn sinking signal
I have a stepper motor(with STR2 Step Motor Drive) which needs npn sinking signal to operate. dsPIC33EP512mu810 is capable of generating high resolution pwm. However, the PWM signal can only turn on a ...
4
votes
1answer
146 views
Reversing direction of a 115v ac motor using Arduino
I have a 115V brushed motor that I am controlling via Arduino. The manufacturer says it draws 1A but I'm not sure if that accounts for the initial current draw to turn it on. I've had great ease and ...
2
votes
1answer
49 views
L293D Brake Doesn't Work (LB1836M good alternative)?
I have a microcontroller that is supposed to drive three motors (only one needs to be driven at the time). I tried doing this with two L293D's but there's a problem with braking.
The problem is that ...
0
votes
2answers
82 views
Motor not working via transistor
I have a very simple circuit as follows
simulate this circuit – Schematic created using CircuitLab
when the motor is connected in this fashion, the netduino activates the transistor, but ...
-3
votes
0answers
44 views
Books of electronic components [duplicate]
I'm looking for books that involve many electronic components like contactor, relays, asynchronous motor... and it will be better if it contains some exercises concerning those elements.
1
vote
1answer
80 views
Using capacitor to maintain current flow past opening of switch
This circuit turns on the motor when something blocks the beam from the LED to the phototransistor. I want the motor to remain on for 5 seconds after the beam stops being blocked (i.e. from when the ...
-3
votes
0answers
49 views
What USB Devices exist to control motors and connect sensors? [closed]
I am planning to use a Raspberry Pi for controlling an automated toy car. I would like to know what USB devices exist that have several slots for connecting motors and sensors. My plan is to connect ...
5
votes
5answers
354 views
Microcontrollers - Beginner questions
How do you determine how many sensors a microcontroller can use?
My understanding is you can't use C# directly on any microcontroller but you can use C# and communicate over the USB and look for a ...
1
vote
1answer
44 views
small fixable position motor to drive universal stage, possible?
I'm trying to make a universal stage, inside a cooling chamber, controlled through Arduino. So what I'm after are small as possible motors (2-3 cm with shaft) to fix on the stage's arms which will ...
2
votes
0answers
60 views
Matching mosfets - linear servo amplifier (AB)
I'm replacing a bunch of burnt mosfets in a linear amplifier for a brushless motor.
3 phases
Each phase: 3 pairs of totem IRFP240 / IRFP9240 in parallell. (no R in series)
My main concern is ...
3
votes
0answers
78 views
Ideas for actuation/actuators besides motors
I have a 1 cm piece of standard rubber tubing with a 1 mm hole at exactly one point along the surface of the tube.
Probably doesn't warrant a picture but just for clarity:
I would like to ...
1
vote
4answers
180 views
Can I use a 220v engine to build up a RC car?
sorry for the noob question, but I'd like to build myself a small RC car. I've found this motor in a blender, which runs at 220v.
Can I power it with a lower voltage? What should I use?
Thanks a ...
2
votes
3answers
179 views
AC motor Low RPM problem
I'm working on a controller for ac induction motor and it's spec is given below. I could control the speed without any trouble at higher speeds like 2000 rpm and above. I'm using TRIAC phase angle ...
1
vote
1answer
52 views
Detecting Motor Overload
I want to make a circuit to indicate an LED if a motor is drawing too much current. (when the motor is stopped for example mud got stuck around the gears) I am using 9-12 volts to power my motor, and ...
1
vote
1answer
67 views
Electrically Controlling A motor direction
I want to control a motor's direction electrically. When the input is a zero, I want it to go one way, and a 1, the other way. The only way I can think of this is a solenoid with a spring attached to ...
0
votes
1answer
32 views
What are fast and slow decay timings in the Allegro A3201 low voltage meter?
In the A3901 Low Voltage Meter Driver datasheet Figure 8 on pg. 10 shown below indicates what the output "IOUT 2/3-4" will look like given input "IN1/3 or IN2/4".
But Figure 8 does not mention ...
1
vote
1answer
72 views
Driving a brushless DC motor (with a UC3625?)
I am trying to drive a brushless DC motor with hall effect sensors using a microcontroller and a TI UC3625 controller.
Thing is, I haven't had much luck. Its a beast of a chip and I've tried wiring ...
1
vote
1answer
55 views
Which electro motor to use for steering a kite? (guestimation marathon)
I'm doing a pet project in which I want to fly a kite from my computer. For this to happen my plan is to build a little box hanging under the kite which includes a raspberry pi (connected to my laptop ...
0
votes
2answers
57 views
Why is this electro motor going slower?
From an old dust buster I've got this electro motor, the included battery pack and the charger:
I ripped everything apart (the dust buster was broken) and the motor still works. After playing ...
-1
votes
5answers
215 views
how to automatically reverse the direction of a stopped gear motor and restart 12 hours later
The reversible gear motor needs to turn on @ 6:00 am pull a object 12 inches and shut off. Twelve hours later the gear motor needs to turn on and reverse the direction and place the object back in ...
1
vote
1answer
125 views
Soft-Starter PWM Noise
I have developed a soft-starter for a project of mine. I am using an Arduino Uno to generate PWM to an OAC-5 relay that turns on and off the voltage across my bridge rectifier.
Here is a simple ...
3
votes
3answers
108 views
How to syncronize two motors with one pot?
I am trying to synchronize two dc motors with their own controllers. The controllers are name brand and use a 10k pot to control the speed. I have a duel 10k pot and would like to be able to "trim" ...
2
votes
1answer
151 views
(How) can I run a microcontroller and DC motor from the same battery?
I have a microcontroller (a PIC10F200) that I'm using to control a DC motor. It's a very simple circuit. A button is pushed and the pic sends output for certain increments of time. The thought is to ...
0
votes
1answer
270 views
Need help on speed control of single phase ac induction motor
I'm working on a project "single phase ac induction motor speed controller". The spec of the motor that im going to use is
230v,1/8hp ,8000rpm@no load
I want to know whether it is possible to ...
2
votes
4answers
342 views
How do I reverse my electric motor?
For a pet project I am doing (trying to fly a kite using my computer) I need to move and reverse an electro motor to my liking (I took the motor from an old hand-held vacuum cleaner). I need to ...
2
votes
1answer
77 views
Short-cut when using SN75441 h-bridge (with an Arduino)
I'm trying to control 6 bi-directional motors using an Arduino to feed an SN75441.
In order to minimise the number of wires between the two I'd like to tie the Motor Enable pins (1 & 9) to Vcc1 ...
0
votes
1answer
34 views
Setting up an IBL2403 motor driver
I received an shiny new IBL2403 the other day:
However, I've been having difficultly using the EasyMotion Studio software that comes with it.
When I try and set up the driver for the first time, ...
0
votes
3answers
125 views
Problem with stepper motor not landing on same spot
I had a quick question regarding a stepper motor that I'm working with. I am running the 5 pin, 5V motor via an Arduino board and using the sketches provided. I am trying to get the motor to rotate in ...
1
vote
3answers
168 views
L293D Question About Grounding
I am using the L293D to run two motors, and am controlling it via an ATmega328.
I am a bit confused about how grounding works. I was following this tutorial, and searched this question a lot, but am ...
