Let's Make Robots!

motors

Hello guys, Lots of little projects left on my to-do list. Finally got the bi-ped to walk ( Still wobbly ). Need to complete MBB to follow lines (and solve mazes). … Read more

Mr.Basic motors connection

Hello Everybody,

I have a question, and after I read a lot of this in this forum, I saw many answers but I didn't understood nothing. My problem is I am a programmer not an electronic, so if someone could help me I will be very appreciated.

I bought a Mr.Basic system and I will connect it to an arduino uno + arduino motor shield. I have some simple questions.

The batterie support has 2 wires. Where do I connect them?

The motors has 4 (2 each other) pins. Where do I connect them?

Knocks Objects Around the House
Using a
Hello All,   The world is full of obstacles, and Fightron 1.0 here, is ready to knock out some, in his own robotic journey.   After recently building an obstacle … Read more

Kickstarting Moti: Smart Motors + App

Hey Everyone! I'm part of a small team in Toronto that's Kickstarting an open-source tool to make it easier to build robots.

Hello LMRians, This is a PID implemented line follower using an Arduino ATmega168 clone, Pololu QTR-8RC sensor array, a Pololu TB6612FNG Motor Driver, and super … Read more

hacked chassis' moves too fast or not at all

So I built three little bots so far. 

One with a raspberry-pi, (6V motors):  


One with an arduino (12V motors):  

And another with an arduino but a hacked remote car (7ish, volt motors):  

Need help in choosing the board or microcontroller

Hi,
I have been searchinf for hours adnd now I have came here to get some help in my problem.
I wanna control 6 dc motors of 48V. I wanna run them through image processing, So kindly suggest me some board or microcontroller for this. I have looked at arduino and raspberry pi. But I am confused which one I should get??????


And my next question is that I have calculated distance b/w object and my robot through image processing, now how I can send this distance to robot's motor that should move for some specific time???????????
Thanks! 

Segway Wheels

Hello everyone, 
I'm posting here today because I am currently in the middle of a segway project, and am looking for advice or ideas for one or two of its components.

Using Sabertooth 2x12 with motor and servo.

 

I have an RC car that i've stripped down to it's bare essentials.  It has one motor that provides forward/backward movement and it has a servo that turns the front wheels left/right.   I can use the Sabertooth 2x12 fine with the motor.  The problem is however the servo. 

Banana Robotics Grand Opening

Hello,

Our family has been tinkering around with robots for more than a decade and we decided it was time to share our experience and enthusiasm by starting Banana Robotics.

How to controll motors using raspberry pi

Hello!

How many motors can be controlled by raspberry pi board and how can they be controlled? I want to controll 4 dc motors by raspberry pi board.

Using 4 Motors?

Hi all, I've made my first robot using a picaxe 28x1 project board. This uses the L293D to drive my 2 motors (connected to a & b). My question is, if I wanted to power 4 motors from a robot, what would I need to do? Is this hardware capable, or should I be looking at something slightly different?

Also, I have a AXE230 PICAXE-08M Module...which says it can be attached to the board and enable the use of additional servos or other output devices, but does not specify motors.

How to power different voltage motors from same power source?

I am taking the "There are no stupid questions" comment to heart here.

I am hoping to power DC motors and servo motors from the same power source. The problem is, the servos want 6V and my DC motors are rated for 1.5-3V. A nice simple solution like a potential divider won't work, since each motor has a non-constant resistance, and a voltage regulator would be hideously inefficient. Adding a separate battery pack seems a silly idea, especially given the Arduino will have one of its own as well.

RC lawnmower for cut the grass from my android phone !
Using a
Hi everybody, First i present myself, so i am a 19 years old boy from france, i am actually studing at the university in tours ! I like technologics hackings and i … Read more

Help me choosing materials/components for my robot

Hello, i need to make a two wheel self balancing robot , like this one: http://letsmakerobots.com/node/19558 .

I need help about components:

1) about microprocessor i saw Arduino UNO and Ardquino NANO ,nano is more expensive, there is real difference about this two controllers???

2) Gyroscope i have already - ADXRS610Z

How do you use a L293D Motor Controller with an Arduino MEGA?

I have recently received my order from ebay. A L293D Motor Controller for my first robot. I read the datasheet and other guides but i can't figure out how to use it, please help! I didnt order 2 so i only have 1, if it fries, i cant get another one or i have to make one. :(

 

My Persistent Brain - Rover 5

This blog entry is my persistent auxillary brain for robotics stuff.

Motors:

Can't generally run a DC Motor from an Arduino because motors draw too much current and it would fry the board.  So the Arduino needs to provide logic controlling an external power supply.

A Robot Operating System

We at RobotBASIC are currently working on a RobotBASIC Robot Operating System (RROS).

The full RROS will manage almost any type of sensor allowing hobbyists
without an electronics background to build and program sophisticated
robots.  The RROS will probably be distributed Open-Source to allow
expansion and customization.  We will even allow users to share their
modifications through our web page.  The LIGHT version is requiring
sensitive coding that will not be appropriate for modification, so it will

My first robot project! This is my girlfriend's old stereo, I thought it would be more fun to be able to drive it around rather than never be using … Read more

Adafruit motor shield, just running one motor

I have looked at the tutorials from adafruit, such as this one:  http://www.ladyada.net/make/mshield/use.html and I can include the library in my program, I tried the examples and I get nothing. I am using 7.2 volts for my power supply and the motor is from an rc car. I have tested the motors with a different h-bridge that came with my DFrobotshop rover and it works fine.

Compatable motors for picaxe 28???

Guys i got some motors as part of another kit, im just wondering will my picaxe 28 from the SHR be able to drive them ok with out burning out.

All i know about them is whats on this spec sheet

http://www.technobotsonline.com/model-motor-with-worm-drive-30510.html

Picaxe 28 circiut board robot

I am trying to make the robot in the start here section.  The motors work when I hold the wires to batteries but when I try to attach them to the board they don't work.  I have followed the instructions carefully and soldered the wires to the pins (as I don't have connecters).  I have tried several times and am still stuck.  This robot is for a school project and has to be ready in two days.  I really don't know what to do can anyone help?

Thanks

Best robot chassis

Was wondering what you guys thought the best "chassis" for robot development was.  Not looking for electronics or a "kit" but just a platform with wheels (or legs or whatever).  I like the idea of doing my own electronics (processors, sensors, power systems, etc.) and could/would eventually build my own from component parts, but I like the speed of starting with known motor/wheels/platform that are well matched and robust.  I have already fried a servo trying to start with that.  I also figure that by the time I bought motors, plexiglass, wheels, etc.