Let's Make Robots!


Chess Engine Update 4/3/11

Well by luck I happened to find some one elses chess robot in one of the instructables contest. He was using Apple script to communicate with a terminal chess engine. That is about as much as I read into his project when I was like "Apple script?"

Hello LMR! My name is Jordan, I'm in grade 12 in Canada, and this is my robot Fred. I won't say he's my first robot. I've built my share of line followers and … Read more

MY AGV development platform


I decided to do this as a blog as I plan for this to be a long term test platform as I mess around with different tech along the way.

OK I started by buying this RC truck chassis on eBay:

It uses a 7.2v NiMH battery and powers the motor using an ESC that delivers a few AMPs of 6v through a BEC to power a transceiver and the steering servo. Instead of a transceiver, I am hooking up an Arduino Fio and various components, housing them in a project box:

XBee AT/API Reliability

Hi all, I'm trying to control 4 servos with 4 pot via xbee, setup as follows:

Tx: Arduino connected to 4 pots(pins 0-3) & XBee (Series 2.5)

Rx: Arduino connected to 4 servos (pins 5, 6, 10, 11) & XBee (Series 2.5)

The Tx side will map the pot values (0-180) and send them over to Rx.


I've setup the XBees in AT Mode using guibot's tutorial but the order of the 4 values @ the Rx end jumbles up at times.

Wireless telemetry + video with 3 resistors and 6 feet of hookup wire
Using a
The Prop can generate NTSC, PAL, or VGA video signals.  Most users connect to their TV through a baseband (RCA jack) input.  Baseband is great for a wired … Read more
This is my first arduino project ever. I at first wanted to create a wireless car with a camera mount so that i can drive around the building. I started at the car … Read more

Xbees and rf modules

Hello guys. 

I was thinking about buying a few xbees for my lasertag project but since they're a bit costly i wanted to ask you if it fits my project before buying them.

I'll tell you what i want to to: basically lasertag is a game where there are lots of players that "shoot" at each other with IR pulses. What i wanted to add to it is some sort of "hit feedback", something, be it sound or LED, that tells me whether or not i have succesfully hit my target.

Xbee conference notes

Gareth, David, Glen, Chris and I discussed Xbee radio modems. Here are some notes I took.

Watch part I  here.  Watch part II here.

TAG all your Xbee related content with the tag "xbee", please.


Xbee Live Conference

Call for conference guests

Who is interested in the upcoming Skype Conference on the advanced features of Xbees? The conference will be broadcast as a special live episode of the video (help-) show.

We are looking for a suitable and practical time slot. Hopefully some time this weekend. Can I hear some suggestions?

Help me connect Xbee to Picaxe!

OK, so I’m going to make a remote control to my next robot. I want to connect a picaxe 28x1 to a Xbee and I have ben trying to find
some good examples but with limited success.

As the Picaxe operates at 5V, whilst the Xbee operates at 3.3V I understand that the signal from the picaxe has to be regulated. (not just the input voltage to drive the device).
Of Cause I could run both the picaxe and the Xbee at 3.3V, but that would just screw with everything else I'm gonna connect to it.

Hi guys! Goggling around searching for information on arduinos and robots, I found this fantastic website. After spending hours reading your projects I decided to … Read more
Hey guys, Figured I'd share some of my more recent work; Dragoon. This is an RX-64 based quadruped robot using an ArbotiX Robocontroller and the new & … Read more

Thinking of XBee Communication, a few questions before I jump in

What I intend to do is create a wireless link between my robot and my laptop, for remote serial programming, and remote control.

I posess a PICAXE 28X1 project board that i wish to connect with an XBee module.

From what I've seen in http://www.rev-ed.co.uk/docs/axe210.pdf an AXE210 is suggested. On page 9 however, we find that the XBee is only connected to the AXE by three pins: two inputs and one output.

Xbee modules help

HI, well, the free day is arriving, so i thought i'd go to sprakfun and fill my cart.

what exactly do i need to have wireless COM betwen two microcontrolers, or PC, to micro controller, or even stand alone Xbee's?

I have these items in my cart:

Help with XBee Explorer Regulated

Just received a couple of XBee & boards from SparkFun but I'm unsure how many pins are needed.


According to the schematic, http://www.sparkfun.com/datasheets/Wireless/Zigbee/XBee-Regulated-v10.pdf, there's a DIO3 pin.


What is it used for?

two modes, roaming with ping, and xbee remote control
Using a
Here is my latest little time killer, TRIppy the Tri Wheeler. Trippy is based on a tri wheel design, with the point of this build being speed.  As a matter of … Read more

Code help, please

I have been trying to use Guibots xbee example of controlling 2 led's with 2 pots. I want to control a servo with a pot through xbee. using the servo.h sketch the below is what i have, but cant seem to get it to turn the servo. if i hook it up directly with no xbee involved, it works fine. so my problem is taking the example servo.h scketch and being able to break it into two sketches. send and a receive. i appreciate any help.

 looking at the below can you tell what i am doing wrong?

06, March, 2009 first test                     Read more
This is the very popular 2.4GHz XBee module from Digi (formally Maxstream). These modules take the 802.15.4 stack (the basis for Zigbee) and wrap it into a simple … Read more

Roboduino Tank Tread Base

We finally have our base for the Roboduino. I made a post to our site at: http://arduinofun.com/blog/2009/03/01/roboduino-base/


This is my first attempt to make a custom remote controller, and also my first customized Arduino.
After seeing this post made by ObbBot I wanted to try to make one myself.

I figured that if I purchase one remote controller it would be cheaper than buying two of these and paying shipment to Portugal.

So, ripping the guts from a game remote controller I get two joysticks, a couple of buttons, two nice motors and one small lcd.

Since I started messing with robotics that I wanted to build a tank, and finally that moment arrived when two Tamiya thread kits and a Twin Motor Gearbox arrived. … Read more

PPP over XBee, aka xbee wireless

hello, i was thinking about this stuff: if i have two computer with two xbee connected with an usb connection with a FTDI chip, it should be possible to establish a PPP connection over the (simulated) serial port.

Am i wrong?

with 250 kbps (let's say 20 kB/s ?), reduced power consumes and long range, they could make a good solution.

Ladyada XBee adapter, not so good for Pro modules :(

Hi, just a note to warn you, in the case you're interested in LadyAda XBee adapter for an XBee-pro module.

They're advertized as being compatible but that's not really the case. The PRO modules have a longer tail that goes over the capacitor in the bottom, which prevent placing the module at all.

The guide says: "Make sure the capacitor and regulator sit close to the PCB, especially if you're planning to use an XBee Pro module". Unluckly, that's not enought.

This is my first experiment working with the XBee modules, and I thought it would be cool to control Farrusco. So, … Read more