Let's Make Robots!

motor control

The 3 'R's' - Rethinking my Requirements for a Rover....


<span style="color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, s
Gives all directions for two motors
I designed this circuit for those interested in controlling motors that require a lot of Amperage, but have gotten frustrated over trying to create a MOSFET … Read more

Faulty board?

 

Hello

I bought a card "Dual 15A Wild Thumper Arduino DC Motor Controller"

When I connect the battery (voltage OK) to the card the led "good battery" lights for a while and then goes off.

The "power" led is ON, the 5V output is ok, the corrent is about 40mA.

The board doesnt work.

Do I had to send the card to the seller or can I do  other controls.?

Thanks, Stefano

PS Sorry for my bad english language

 

How to control a motor fwd and revs picaxe -08m2

Hi everyone this is my first forums post here

I have a bit of a problem that i am trying to work out and that is how to control two motor with a picaxe school experimenter board and an -08m2 chip. This is for a very simple robot that should be able to go forward hit an object triggering a switch which will stop the robot, reverse it and then turn it around before moving off to crash into something else.

can anybody help me with any resources or circuit diagrams.

thanks very much

:)

High Current Motor Control with Arduino

Hi All,

Please excuse the commercial but I wanted to let you all know about our new motor control shield for Arduino.  It is called the MegaMoto and is designed for motors from 7V to 28V and up to 13A continuous current.  A peak of >30A for a short time has been demonstrated.  The unit is fully protected against thermal and current overloads.

I'm sure many users would like to be able to control something larger than the tiny motors you can drive with the L298 etc.

L293D H-Bridge problem

Ok heres the problem, no matter what I do I can't get the H-bridge to work properly.

I've triple checked my connections, here is the test code i'm using

control 2 motors with arduino motor shield

Hey guys I have a arduino motor shield from adafruit and I want a code for it so that i can control two motors from it. So please could you post a code for it. Also could you tell me that can I connect 2 servos and 2 motors on the shield at one time without having any problem.

Thanks for your help.

Motor Control for 6WD Wild Thumper

Open call for suggestions:

I own a bare 6WD chassis "Wild Thumper" by Dagu, designed by Oddbot. And I have (2) "racing packs". Those are basically 6 NiCd cells in series, providing 7.2 Volts nominally. The motors are rated for 6 V. Stall current is listed as 5.5 A.

Even the most basic speed control will need some sort of amplifier for the PWM signal. Let's start very simple. Just speed control. Just one motor. One direction. What kind of transistor shall I buy? And what kind of circuit shall I use?

upgrading from small motor

Let's say I have a motor control circuit that's too small. It could be the motor output of a Picaxe, the adafruit motorshield for arduino or a the innards of an old RC toy. The main thing is that it has two output wires, both capable of delivering positive and negative to make a motor turn both ways.

What if you want to use a bigger motor that needs more power? Below are three circuit diagrams

motorkontrol.jpg

Dual Y-Bridge (was One and a Half H-Bridge)

I had an idea tonight that is either inspired... or stupid. Please help me determine which. ; j

I was thinking about using one of my new Picaxe-08 processors for a project. They only have 5 I/O ports, three of which can be either an input or an output. However, for my project, I wanted to be able to control two motors and two sensors. Since traditional dual H-Bridge designs would require four processor outputs to control two motors with forward and reverse, that would leave only one I/O port left. Boo hoo.

Arduino Motor Control Code Help

I am currently using a arduino duemilanove, and it is awesome. I have been playing around with it for a couple of days now, and I really like it. Anyways I figured it was time to start to building a robot. I decided to start with the motors. For the motor control I decided to use guibot's tutorial. It worked fine, but the motors only traveled in one direction. Because I wanted the motors to also travel in reverse too I decided to experiment with my own code (on only one motor) that looks something like this:

Simple motor control for Mr. Basic

I have seen a few people asking questions about controlling Mr. basics motors. One problem is that they draw more current than an L293D can handle. A L298N will do the job but you will want at leat 6V. Below is a schematic of the simplest way I know of to control your motors. Using a 5V relay you can run from 3.6V to 6V. I suggest a 9V relay if you want to use 7.2V.

hobby motor control

Hi guys, I am looking into getting a small electronic speed controller from the rc hobby store to run a couple of small dc motors (tamiya dual gearbox), does anybody know if these take the same pwm input as running a servo or does the r/c gear use something else? I thought r/c gear used pwm but when browsing online for motor controllers some say pwm, and some say r/c (in addition to analog or serial or whatever else). Is there a difference?