Let's Make Robots!
  First place and congratulations to Kelpy with his  LMR Bot Clone (ish):   Read more
head follows an object around the room
I was looking for a way to have a robots head follow something or someone around. The best results I found were the ones using a camera, but these are a bit … Read more
(JKA is working on something more fancy than this, an applet for download)   If you are using Picaxe, I am sure you know, use, and appreciate the function … Read more
Recently I posted a tip on using the anti-static foam your IC's come in for pressure sensors. This show you how to apply that tip to your robot. Read more
Basic principles in PCB design
I thought this could come handy. EMI and power surge problems are common in digital circuit design. The following list is a compilation of suggestions I have … Read more
Cheap 4WD off road chassis for your robot
The chassis of the "Rebound" is perfect for small off road robots. The PCB has a radio receiver and dual "H" bridge. This walkthrough shows you how to make the … Read more
I have got the sonar sensor working and scanning and added this to the data sent to the pc.  I have also written a very basic obstacle avoidance program which … Read more
Sometimes you want something extra in your servo and you have to build one for the purpose
(If Google video is down, video is here) I like servos! However, sometimes you want what a servo does, but you need one that is special: Very strong, very fast, … Read more

Multiple swithces to analog input?

Just had an idea. I'm planning to use a LOT of (tactile) switches on a walking robot. For instance I wanna put several under each foot. But it seems like a waste of pins to use a digital pin for each switch (or use multiplexers). So I thought I might be able to connect the switches in paralel and read several at a time from an analog input using resistors of different sizes connected in serial with each switch. Like this:

switches_s.jpg

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