Let's Make Robots!

motor driver

Mr. Basic Motor Driver Kit Problem

Hi, LMR!

I need some help with troubleshooting Mr. Basic Motor Driver board. Basically, I couldn't make it work. I use 4xAA Alkaline batteries [5.8V actual voltage] as power supply. MC Picaxe 18X. Relays are working fine, but Motors are not. With my little experience in electronics I guess BD681 does not open for some reason. But not sue, I might be wrong...

My setup:

Trouble1.jpg

Troubleshooting done:

Custom Motor Driver Debugging

Hello LMR!

I built a motor driver, look: 

motor_driver_1.jpg

Cool isnt it? Of course it doesn't work as intended, but hopefully you guys can help me fix that. Lets take a look at the details first, and afterwards my problem.

Drives 2 DC brushed motors. Holds 4A per motor.
Need a 8A  motor driver but don't have a lot of cash, look no further this article describes a simple and cheap solution. This project uses just few electronic … Read more

Help with connecting Arduino clone to L298 based motor driver

I am quite new to the world of robotics, but have years of experience with basic passive components (caps, resistors, etc) so I thought this would be a fun way to start learning more.

 To start myself off, I picked up a handful of arduino clones, mostly seeeduinos.   I built some motor shields and got those programmed, and working successfully with some cheap hobby motors, I've also successfully managed to get some servo's running without a problem as well.

The challenge of building a 1st bot..

08/07/09

I got my arduino mega in the post a few days back and having been playing around lighting up LEDs. Thought id get started with constructing my 1st bot. Hence i rigged up 2 motors, a dual mc33887 motor driver, a 6v supply and the mega board. Uploaded a sample code to see if it would turn the motors. Voila!! Nothing happens. Nothing whirring, no sound, no ecstasy. No nothing. 

Its quite obvious that my bot wont perform with stationary wheels.

Still trying to find a solution. Images of connection, mc33887 truth table and sample code below.

Small motor controller/driver with variable speed

Hello, i'd like to have some small driver/controller like the L293D or similar, but that can run motors at variable speed. Does it exists ? A small and cheap board would be ok.

If it doesn't, how could it be built ?

 

Thanks :P

Futurlec has a good range of components, their prices are reasonable, they have no minimum order charge and they deliver around the world.  Postage is a bit slow … Read more
Althou i just burned one, i think i could still share some info here :) This is an advanced motor driver for 12V motors. It is usually coupled with EMG30 motors, … Read more

Arduino: How to make your first robot with..

When writing this, LMR only offers "Start here" - instructions on how to make your first robot, using Picaxe.

"Nebster" wrote to me, and asked if I could do a parallel, using Arduino, and I think that is actually a very good idea (now that Picaxe refuses to pay me commission, haha)

Focus should be on making first timers get a robot up and running at a low cost, and most importantly learn how to hook up motors, a servo, and a analogue input in "no time".

This is a motor driver that I like because of this: It is usable from 6 to 50V, at up to 4A total output currentIt has a 5V output, so you can just hook up any … Read more

Help with motor driver?

Hi,

 

As many of you know, my experiences building robots have been painful at best. So, I'm taking a step back, and I will follow Frits's wonderful tutorial.

 

Because I live in America, I'd prefer to buy my parts from a U.S.-based site to avoid longer shipping time,additional fees, etc.

 

I've run into a problem: Frits's tutorial calls for 1 L293D Motor driver. At mouser.com I found a short list of products similar to what I need.

 

Which will work?: 

Price: $3 USD
Relays are an alternative to motor-controllers. They do consume a little power from your battery when in either on or off position (turned on) - but they also do … Read more

Motor driver

Well.. Ever since I found this page (through ing.dk) I've been dying to build my first robot.

I have bough all the parts I need, and i've been trying to modify an RC toy car, but i have blown up the motor driver in it :D. I tried with the 293D, but it couldn't take the current. So right now i'm just stuck...

There are various different chips which are commonly used with the Picaxe chip. Here I attempt to explain what each one does, where it goes and why you might care. … Read more
psy's picture

My pololu controller came !!!

Sweetness my pololu controller came,(Dang that thing is small :)

I just finnished my SAT test  (I am home schooled so that means no more school untill september!! :),

and I just  got a summer job, this week is so awesome !!!!! :P

 so here comes the hard part, coding :)

 

~Matt

Driving a motor with arduino...

I need some help with driving dc motors with arduino. I have already looked at the arduino site and all I found was this http://www.arduino.cc/en/Main/ArduinoShields and no guide or parts list.

I have gone thru all of the lessons here http://www.ladyada.net/learn/arduino/  and ithas been really fun so far but I WANT TO BUILD ROBOTS! NOT BLINKIE LIGHTS! :)

 

 

This chip enables you to take 4 outputs and turn them into 2 that can be reversed. Note that the chip can get quite warm, but it is designed for … Read more

Motor driver tested

Today I tested that the motor driver circuit of PICAXE Pete does in fact work. I'm now in the process of writing some code for line following using my standard technique: find out where the line is by taking the mean value of a histogram of the sensor values and using this to calculate a regulation term for each of the two motors.