Let's Make Robots!

Recently Collected Posts

converts analog output to digital one
Hi...   Back again with some info... So I want to hit it in the middle...   Everyone who bulit a line follower sometimes get annoyed by the thing that his sensor … Read more
changes pins, very fast
I tested the difference in speed between the Arduino digitalWrite() function, and other methods of direct port manipulation. The results are surprising, check it … Read more

Xbee conference notes

Gareth, David, Glen, Chris and I discussed Xbee radio modems. Here are some notes I took.

Watch part I  here.  Watch part II here.

TAG all your Xbee related content with the tag "xbee", please.

 

Live soccer robots on LMR - Software

This post is to help Frits or anyone else get and deploy the necessary software for OddBot's "Live soccer robots on LMR".

Description 
The game will be a multi-player remote control internet soccer game. Complete with cameramen, laser towers and any other silly shenanigans we can think of.

Holomonic Movement Kiwi Steering 2DOF
Using a
Hi to all, this is an Arduino based three omni wheels rover with 2DOF. The 2DOF is accomplished by three omni wheels on a continuous rotation servo (modified) each … Read more
I decided I wanted to work with the Arduino processor, so this is my attempt to recreate the "start here" robot with an Arduino brain. I also intend this 'bot to … Read more
XBee Files - Part 1 - Basic Communications and Setup. Non-Stream Video :- XBee Files Part 1 This guide will take you through the basic setting up of the XBees in an … Read more
Nav with IR, back away from edges
Using a
Ok so I have made my 'Start Here' robot on tamiya tracks, twin geared motors and plate set. The program is based on the 'Start Here' project with a few changes to … Read more
Price: $29.95 USD

 Collected by one member
The Arduino Duemilanove is a microcontroller board based on the ATmega328 AVR microcontroller. It has 20 digital input/output pins (of which 6 can be used as PWM … Read more
  I give you the Nano Sumo bot, a collaborative project between myself and Gary. View Gary's post on Mechanics here I think this bot "is" many things. Smallest … Read more
Floid (Prototype 0610) This is the first prototype of Floid, The inspiration came from Frits and his TIRDNKWIIT Robot. The idea being that it will move around by … Read more

About me

I am a 55 year old computer programmer with 35 years experience as a systems programmer. During that time, I have programmed in over 40 languages professionally.

In the Air Force, I was a ICBM mechanic as a civilian, I started out as an electronics engineer but was so distracted by the idea of programming that I took it up full time. Consequently, I have been able to strattle the fence, one foot in software, the other in hardware. Nowhere has this been more beneficial than in the robotics world.

Dagu's Ultrasonic Sensor testing

I've made some testing with the ultrasonic sensor from Dagu. Tests were made on the platform the sensor is build for, the Asuro. The sensor works pretty well, most of the the time. The range of obstacle detection is from 0..25cm. Sometimes the sensor dismiss an obstacle, when the objects is not directly in front of the robot.

 The video gives some impressions, how this sensor works.

Remote controls an Arduino/ PICAXE board connected to a computer by another computer using a wirelles network
I've tried to do this a while ago and I've had some problems finding documentation about this, so here is a quick and simple tutorial. First of all you'll have to … Read more

Other robot builder communities

When we started this LMR-thing, there where not really that many robot-builder communities. Now I see them pop up, I just discovered the one that I will post below as a comment to this.

Apparently LMR is still the worlds biggest of it's kind, according to different websites that compare traffic, google-ranking etc.

So, I think it is in place to spread a little of our love, get the other guys some visits!

Shift Registers with Arduino

On this page there is a tutorial for using shift registers with arduino http://www.arduino.cc/en/Tutorial/ShiftOut

The person has attached two shift registers togther by plugging one into the arduino and the second is getting serial from the first register. Would it be possible to attach same 10 shift registers in this way? Would it be slow or inaccurate? Would the code be over complecated? Would there be to much current draw?

Any help is good

 

Price: $0.65 USD

 Collected by 3 members
Do you have the undeniable urge to plaster your love for Lets Make Robots on everything you see? We might just have what you're looking for... Read more
  Suitable for ASURO kits and any other kits   Part list: Read more
It's been a long time coming but Mr. Tidy is finally here! He is Arduino compatible using the ATmega1280 MCU and can be programmed via the pre-loaded Arduino … Read more

Xbee Live Conference

Call for conference guests

Who is interested in the upcoming Skype Conference on the advanced features of Xbees? The conference will be broadcast as a special live episode of the video (help-) show.

We are looking for a suitable and practical time slot. Hopefully some time this weekend. Can I hear some suggestions?

DAGU will now stock polymorph and can offer you 1Kg for $22 USD. Admittedly shipping cost will increase that price but if you are ordering several other parts from … Read more
BJ is based on the Parallax Stingray robot. I ordered the chassis before I went on vacation. Since I just got back, I hope to build it this weekend. I am planning … Read more
Price: $99.5 USD

 Collected by 2 members
This tidy little 1 row x 8 element thermopile sensor reads the temperature across a 41 degree sweep. And it can control a servo to automatically pan and create it's … Read more
When Flexed or Squashed alters its Resistance
 Here are some ideas on how to make Resistance/Force Sensors - I thought them up while ago to use as antenne - Insect Feeler like sensors. (sticking out of the … Read more

DC motor control with Arduino

Ok, so i had this running just a few days ago, but then when i tried to assamble it didnt work out for me. Now I cant even get this simple DC motor running from the arduino, or to be more precise; the motor will run at a very low speed. Connecting it directly to my two 1.5 batteries it will run at full speed, but when trying to control it from the Arduino it wont work for me.

 Here is my setup:

simple_dc_motor_sch.jpg

and the code is dead simple: 

Arduino bump switches

I Have my very first robot posted on LMR and he's pretty cool except whet he gets a blind spot on his Parallax PING)) sensors and hits a wall, burning the motors and wheels. I'm really really naive when it comes to programing, i know only how to understand programs people have written before for arduino. I do know tons about non- programmed electronics, though. I want to add something like bump switches to my code. I don't know how! assistance requested. My robot is Makerson and he's new on the front page of robots.

Hi, This is my first post to this forum, maybe time to let you see my robotic project. Five months ago i planned to make a two wheeled balancing platform. I wanted … Read more
It is teleoperated from the surface while it goes under water
Using a
Here is an ROV built for the National Underwater Robotics Challenge. This video clip shows the mission and then shows one of the teams, Carl hayden High School, … Read more
Navigate around via sensors and home alarm system
Using a
Hi ALL!!! I'm from Ukraine, and this is my big project "NONAME" .  Why "NONAME"... I don't know :) Some people  give he name WALL-E , but they wrong... It's … Read more