Let's Make Robots!

Bug Toy - PID - Visual Tracking and Moon Delay

Update 2011.4.20

First hacked attempt at a P - control.. it got a little complex being multi-threaded - the feedback on one thread, the commands on another.   The result is in the video (at the bottom of this post).  I think I have to boost the kp constant a little..among other things 

Things I noticed:

Price: $59.95 USD

 Collected by one member
If you're looking for a base for your next robot, look no further than the Rover 5. This 4 motor monstrosity takes any terrain by storm.... just don't take it out … Read more
Price: $34.95 USD

 Collected by one member
This cylindrical, 2.69″ × 0.98″ × 0.98″ brushed DC gearmotor with a 171.79:1 metal gearbox is a lower-current alternative to our 25D mm … Read more
Photovore - Light seeking solar powered
  Introducing Medibot2, this is infact the same bot that I introduced a fews years back as MeditBOt1.Back then he was housed in an empty pill bottle. Now after a … Read more
Price: $41.99 USD

 Collected by one member
So you want a affordable GPS unit right? Well, how about a GPS unit that comes with Bluetooth, RS-232, and USB-TTL on board, and an external magnetic antenna (with … Read more
Move around in a very cool way
Using a
The "Flying Dutchman" is my second project. The project is more about a drive system then the robot itself. It is an omni wheel drive. An omni wheel robot can move … Read more

RFID Keylock - RBBB Propeller

Continued......... Video explains the details ....including the painstaking job of finding the right house wires....ekkk

Removed the "Elfish PC" as its needed on another project.........

..... Replaced with a super cool RBBB Propeller board M44D40 found on the parallax forum, for 20 dollars.

I choose this board because of its size and simplicity (it has to fit inside my RFID box) .

Make Your Own PICAXE USB Program Cable

Hi everyone!

I was just wondering if anyone else has made their own PICAXE program transfer cable?

I had all the equipment to make one, 2.5mm stereo jack, colour coded wire, a usb plug and soldering equipment; so I thought i'd give it a go!

The connections for the PICAXE cable seemed very simple (having only Serial in, Serial Out and Ground) and knowing that a usb's connections were quite similar (Ground, Data+, Data- and Vcc) so I tried to match them up.

Price: $7.5 USD

 Collected by one member
Ever want to change the species of your RF modules? Now you can evolve your XBees into Synapses! Well that doesn't really make sense but, hey, it doesn't change the … Read more
Price: $14.95 USD

 Collected by one member
A very powerful 5mW green laser. Fun, but don't point in anyone's eyes. Read more
Controlled from PC via XBEE wirelees radio, or roams avoiding objects using sensors
Using a
Here is some information on Zapp Prop Bot-1.X It is controlled by a Propeller Robot Controller Board Kit V1.02 by Wulfden. Read more

LDR vs Ir Phototransistor

Hi  Everyone

I'm doing research for my first bot from scratch. I was hoping someone could point me to a good source of info on the advatages/disavantages of using LED & LDR vs Ir with Phototransistor for proximity sensors.

My basic goal for them is to have an edge detector in each corner and a line following array. I thought the LDRs would a simple and cheap approach but was surprised to see how cheap this Ir LED & Phototrasistor set was.

ATTiny programming

I saw this link about programming ATTiny:


is it possible to make an ATTiny board to replace the Uno for programming other ATTiny chips?

they appear to have the same pins that are used by the Uno; 'SCK, MISO, MOSI'...


Please dont laugh this little guy off the planet. He was a very old robot kit Called Mr. Technoman I'll upload a picture of the box later for fun. The old robot was … Read more