Let's Make Robots!

Make robots talk.. to each other.. dirt cheap!

UPDATE: More info on the subject here: http://letsmakerobots.com/node/5194

Original post:


I have this thing in the back of my mind that "the next step" for me must be my robots talking to each other.

In the very little time I have for building & playing & researching these days, I have been playing arouund with pulsating lights, robots feeling the bass from a stereo, the very useful "external timer" commands within the Picaxe libraries and such.. But have not found that killer app that I was looking for.

Staring out in blank nothing, thinking.. oh, if only I could buy like 10+ Easy Radio transmitters.. but that would be quite expensive.. and so I just browsed, and wow!

You can really get some dirt-cheap wireless communication devices now! Holy cow, tomorrow I will browse more and order some.

How about 10 of these:


- That's 5 robots communicating 2-way wireles for about USD 50 including p&p!! 

- or check out this page for inspiration:



Sworm robots may be just around the corner :)


Let's hear it if anyone can find better deals for robots informing each other, just within a space of say 10 meters. 

I only browsed google for about 5 minutes, sure there is more to find out there :)

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Those are indeed dirt cheap! And a lot cheaper than using bluetooth as I was considering (to establish a wireless link between my PC and an Arduino).

However I read somewhere that they're not so stable if you wanna send/receive larger amounts of data, so one should use something called the manhattan method for data reconstruction..Anyone has experience with this they would like to share?


This "warm-up" method was invented by Frits and works flawlessly. I use it on Walter for RC and I have also used it to send data back and forth from my laptop (using processing) to my picaxe chips. I have sucessfully driven my robot using a virtural joystick on the screen and sending serial data via RC. I average about 98 or 99% clean data transfer with only a little "cough" from time to time.

I'll be reading up on that.. As well as the manhattan method. Even a 1-2% dataloss may cause severe problems for me if I don't take the proper precautions.

you r gonna help me whoop on the xmos contest.

you are very competent people

well i think it could work, but i dont quiet understand it fully so yeah hope it works though

I have been working on doctoring and porting a speech engine written in qbasic4.5 not only giving it access to my own AI but also stubbing in some adanced calculation ability's and plotting along with access to dos and there by access to programs and the web.

the point is if it's speech engine and AI alone can be ported into other basics like Parallax or AVR,axiom then we could use it as a means of bot to bot comunication. it uses phenoms to pronounce words and it could also sample sound for phenom recognition. Just some ideas..


That would not be dirt cheap though :) More than USD 5!

why not unshrouded IR useing I2C protocall or even morse code?




The sun radiates IR, the same goes for candles and about 50% of all my inhouse lighting. So critical messages can be lost when using IR. Radio is much safer. 

/ vzz-clck-"Maneuver"

Hey frits,

I was looking at your $5 Rx/Tx units and it seems that they are not addressable. Not that this is a huge deal, but at a minium you will always have to send 2 numbers --the first sets the "address" while the second is the data-packet.