Let's Make Robots!


Using an RF receiver/transceiver pair along with a wireless camera to process the images and send commands to a mobile robot

I would like to create a setup I will be using for a lot of my upcoming robots. A small wireless camera that will be ultimately outputting through USB to my computer. The computer processes the video and sends commands to the robot via RF. I guess the serial connection will be no more than 1900 bds. How can I coordinate RF and image-processing in a single program for autonomous navigation/other tasks (I can almost hear GroG saying "MyRobotLab" ;)?

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

What cameras are available

I'm really looking to the future at a project I'm planning, but wondered what camera setups are available.

It seems that a lot of people use the Blackfin(?), but I wondered what alternatives there are. Lots of mentions about the AVRCam, but that now seems unavailable.

Alternatively, a couple of years ago, I upgraded my security cameras, and have a couple of wireless cameras that I can "hack". Is that feasible?

Create wireless serial connection
Using a
Wireless controlThis walk through describes a cheap way to create a wireless controller for a robot. It is not a ready-to-go manual, but a proof of concept. It's … 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.

RF link TX/RX 434 MHz = lessons learned and then some

I'm trying to build some sort of RC transmitter using the 434 MHz radio link set. Sometimes called Easy Radio, but not by SparkFun. Edit: because they're not the same thing!

I am setting this up on a breadboard with a Picaxe 08M and two potmeters as inputs. The two ADC bytes are combined into one byte. The one byte gets transmitted.

Remote controls an Arduino/ PICAXE board connected to a computer by another computer using a wirelles network
I've tried to do this a while ago and I've had some problems finding documentation about this, so here is a quick and simple tutorial. First of all you'll have to … Read more
Navigates with commands from a wireless nunchuck
Using a
This is my first robot(arduino based). It is currently incomplete. I started by getting some standard hitech servos, and then modifying them by removing both the … Read more
Measures waterlevel in overhead tank and sends the data wirelessly to handheld indication device
Here's a nifty project I came up with to help the people at home. It's a system that checks the waterlevel of an overhead tank and sends the data using radio … Read more

Wireless Control

I found a remote control i want to use it to control my slightly altered start here robot. Do i have to change the code on the remote.If so can you post it??? Also what extra code do i have to put in my picaxe

thanks muchly...

sorry about the quality

Wireless Control

im looking to control my picaxe robot wirelessly by either my computer or remote control..
what is the cheapest method and how would i go about doing it?
thanks muchly

Has the potential to be a slave-master to any of my projects.
Using a
This remote represents my journey from knowing absolutley nothing about RF communications, to a little bit. Built from scratch, the remote runs off a PICAXE 28X2 … Read more

my very First bot - eYandron1





My very first encounter with electronics - a very simple manually controlled robot. The main brain controlling it is a Attiny2313 + a motor driver board based on TIP122 transistors. At the time when I built this, I had no idea about a chip called L293D!

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.

Computer Controlled RC Car with Wireless Camera


I wanna a project for my studies...

here is what i would like to make..

1. A RC Car that is controlled via computer and not by the its remote. i wanna create a application that controls the car and also displays real time video.

2. I wanna use zigbee (XBEE pro) for transmitting and receving commands and controls.

3. Wanna use mobile phone (wifi) camera for video transmission.


now i wanna know How can make this ???

1. which microcontroller should i use ????

2. which software should i use to make the compuetr app.

RC car controlled by PC or PDA using wireless communication

Hallo Everybody !

This is my very first post ! ))

I am doing the robo-project in the university. The main task is to build a robot using wireless technology that can be able to perform number of tasks that are sent from the PC.

Routerbot (Without hacking the router)

I am intending to build a routerbot. This is my design idea. This is my first major robot so please comment and suggest if even the slightest urge arises.

I will call the robot flat friday.

Design brief so far...

What I want the chassis to look like (minus the gun)

What I want the chassis to look like (minus the gun)


My inspiration for the robot.


help with vga wireless


Im about to start the next part in my project which is building a wirelss camera to build in my projects. Im starting this with absolutely no idea how it is going to work and if it is going tow work. Im hoping someone here may be able to point me in the right direction. The main idea of this post is for me to share my idea and see if anyone has any constructive input or critisism on it. 


The camera i have is :

maplin cmos camera 

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


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.

DIY wireless, possible or not?

Hi guys!

Sometime ago i had an idea in my mind about a DIY wireless link between, say, two MCUs. But the point is that i never tested it. I just wanted to know what you thought about it and if you think it could work (you are the electronic gurus after all :) )

It should work like this.

-Receiver has the antenna attached to the base of a darlington, and the signal received goes to the MCU (if not enough maybe i could make a bigger darlington, maybe three NPNs)

Updated with Bonus tip! You can "easily" hook up some cheap UHF / FM whatever units to make 2 MCU's talk wireless by serial. But you need to learn some stuff, this is what I learned :)
Since I discovered this: http://letsmakerobots.com/node/5916  all has changed! I was blind, but now I can see. And I can program! On Picaxe, in order to send … 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.

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.

separating several sensor values

I´m starting a project were 2 Arduinos comunicate through wireless modules (XBee Pro).

Arduino #1 has two potenciometers and sends their values
Arduino #2 recieves the values like this:


Now I need to separate this values and assign each one to a variable.
But I´m stuck here.. any help would be apreciated!! 

sweet! (home area network)

Check out today's score!


A colleague gave me this linksys WRT54. The dreamed version with the lotta-RAM and lotta-flash. For free.

Price: $4.5 USD
There are a few models of this but the SM125-IC is an RFID Interigator with read/write capabilities and I2C connection capabilities. I have been looking for a chip … Read more
Roll around remotely & terrify co-workers
Using a
Unfortunately, this is the amount of documentation I have left of this project. It was a robot constructed from a thrown away icebox cooler. It ran windows 98 on a … Read more

How can I add Wifi to my robot?

I'm new to robotics but have dabbled in Microcontrollers the last few years and develop software for a living. One thing I've been dreaming of doing for awhile is builting a blimp robot that is controlled over wifi, but I can't seem to find information on is how to connect microcontrollers to some sort of wifi interface. I'm hoping there's some sort of module somewhere that I can interface with.

Here's the plan: