Let's Make Robots!

Amazing tracking algorithm for video streams

Object recognition via simple camera was always a big problem. Just watch the following video and be amazed.

The best part of it - its free, as long as your code is open source.

For more info check here: http://info.ee.surrey.ac.uk/Personal/Z.Kalal/tld.html

Image the endless possibilities with this software. 

Questions about my hacked RC car arduino robot

Greetings everyone. I have an old RC car with 6V accumulator. Can I power my arduino board + the l293d motor driver from this accu without using any voltage regualtors? I read that arduino and 3 of the 4 pins on the l293d motor driver require 5V. 

The voltage requlator I have requires 2.5V more ie 7.5V, but the accu is 6V. More stupid questions will follow :D

Can't solder anymore -> solder doesn't melt and stick on the board

Hi all. I've got this cool digital soldering station this morning and boy was I exited! At last I could solder my 1 robot kit! Well after soldering 30 or so contacts + soldering in the axis I couldnt solder anymore! Here's what happend:

1. Since I thought any solder would do (lame huh?) I bought the cheapest Sn99.3Cu0.7 solder. And since I thought it has the same melting temp. as Sn60Pb40  I soldered at 360 C / 680 F.

2. It went all good but after a while the solder wouldnt melt. So I raised the temperature to 450 C / 842 F :)