Let's Make Robots!

price comparison

Range scanner comparison?

Hello all,

I'm new to the forum, and fairly new to robotics.  I'm currently considering working on a research project involving multiple robots mapping an environment (something simple, like a wooden maze) together.  For the mapping I would need a fairly reliable range sensor.  I would very, very much appreciate some advice from seasoned robotics veterans such as many of you on this site!

Good servos at the right price?

Now that I'm building so many robots servos have become a big issue with my budget. I've spent a lot of time looking for better servos at reasonable prices. The credit crissis hasn't helped. Being in Australia can be a disadvantage too with the poor exchange rate, shipping cost etc. Basically I want to know what do you think are the best value for money servos around today and where to get them in three basic categories:

Parts Prices (In US Dollars)

Here is the analysis I have done so far. I didn't look everywhere, but I did learn 2 things.

  1. You can't buy everything from 1 place
  2. It is cheaper if you buy from outside of the US on some parts

Here goes my summary: (For all intents and purposes, when priced in £ double it for US dollars. It is a bit less than double, but after your credit card company charges a fee to convert the purchase it will be close to double given the current rate of exchange on 5/7/2008)

Starter Pack (Picaxe 28 with USB cable)