Let's Make Robots!
It is one thing to make a cool robot physically. It is much harder to make it do something useful. This project will follow my progress as I try to make "OddJob" my … Read more
A tutorial for calculating series resistance and reading LED data sheets
I've noticed that some people are uncertain how to calculate series resistance for a LED or when using a group of LEDs are uncertain about wiring them in series or … Read more

Useful information for building robots

Just as LMR has a scrap book for our robots when they appear on other sites I think we need a similar collection of links to useful information. Although we can just post a web link, the web links can be about a wide range of things, many are just cool / funny videos or shops.

Ideally we need a database of useful information such as the tutorials written by LMR members plus information found elsewhere. I presume Frits is working on something like this for LMR4.

Venus - public venue display robot

The Venus robot is a 125cm (4.1ft) robot designed for display at public venues. The base is an adaptation of my BigBot robot base and uses the T'REX robot controller combined with a 9inch Android Tablet for human interfacing using the touch screen.

Update: Final parts arrived for the Service Droid - shipping at the end of the week

First of all I want to apologise that this has taken so long. It is partly my fault that the kits have taken so long to be produced because I made some last minute improvements to increase the strength of the arms.

We have also had some delays waiting for parts to arrive. The latest being that the laser cut factory missed one part. These parts arrived today. The parts cannot be packed tomorrow because we have another order that must be finished first so packing won't begin until Wednesday.

The IR compound eye consist of 4 simple analog sensors (up, down, left and right) that can be used to track movement of nearby objects (usually within 15cm … Read more
Most students and hobbyist will use servos at some stage when building a robot. This tutorial uses Arduino sample code but the concepts are the same with any micro … Read more

Speech Recognition - Robot Thinking and Understanding

Programming a robot to do a single specific task such as following a line is hard enough for most people. So how do we program a robot so it can perform many different task? How do we command / control it?

Recently I have been wanting to use the speech and voice recognition of an Android mobile phone. My friend Bing wrote a simple app for me that allows my controller to connect to an Android phone via Bluetooth and then send the phone a list of words that I want the robot to recognize. For example: "OddJob,go,forward,backward,turn,stop"

This tutorial is an extension of my original tutorial on using motor encoders here: http://letsmakerobots.com/node/38636. This tutorial looks at some code I have … Read more

Special limited offer for all LMR members!

Ok, officially this offer is over but if you contact Pome and tell her how beautiful she is (flattery will get you everywhere) you might be able to get this deal until the end of the week (9th of November 2013).