Let's Make Robots!

Recently Collected Posts

Optical Encoder giving variety of results

Hello,
I have a QRB 1114 and have done a little experimenting with electrical tape on my wheels.  I "thought" that I had this working before in a different setup, but maybe it was not working "correctly" before.

making Rover using Faulhaber 24V BLDC and ATxmega128/256. Wireless Communication using xbee. Main host CPU running windows 7 with custom developing application in … Read more
Ever needed a new texture or unusual form for your robotic creation........ .... Look no further and follow this Guide.     NonSream Videos :- PolyMorph workshop … Read more

Pong

Do you remember when you were a kid, and you spent your time playing pong? Neither do I. But why not bring it back? Yes a portable pong game. 

So i set out on my quest...

After some decisions, i decided i would make a pong game using 6 LED matrices, 6 MAX7219CNG, 2 potentiometers + KNOBS!!, and some custom PCBs. So here is where i am at so far, just have a collection of parts but im working on it, still waiting for the PCBs to arrive. 

 

[Update October 17, 2010] Preliminary videos added. [Update October 24, 2010] Robot Rally video added. Read more

Walter's new Navigation System (May I / Can I Go)

So here we go... I have been sick of "regular" navigation for quite a while now (more than a year now). The whole idea of "just keep going and if there is something there, react to it" is just not doing it for me any more. For the last year or so, I have been thinking about and working on a new system of "may I go". The theory is basic: Before you start going somewhere, check that there is somewhere to go! In the system I am using now, a 180 degree scan is performed and the sonar readings and angle is sent to processing.

I have now finished my wiimote project.This remote is now a USB-ready remote to be plugged into and talk to Processing or any other software running on my lappy. In … Read more

Glen the Stove, Picaxe, Processing, Twitter and Thermsistors...

Yup, I got the Twitter-stove project done. The video is pretty self-explainatory and code is available upon request.

Glen the Stove on Twitter

Heat Tracking Robot Arm/Head

Ok, I have been wondering if it would be possibly to build a robot head or arm that tracks thermal energy. You know how there are special thermal cameras that show areas of higher temperatures in different colors? I'm guessing those are pretty expensive, so would there be a simpler and cheaper way of building a thermal sensor? I was thinking of PIR sensors, but they can't really sense how hot something is, just if what its looking at is hotter than average.

Software PWM

I was hoping to avoid wrighting my own software pwm for the pic but it looks like i've arrived there.  the motors and tracks I hot glued toghther don't drive straigh so the only way I can think of fixing it is to use PWM to slow down one motor.  I know I could use the one hardware pwm to slow down just one motor but thats going to be used in the future for somthing else so I have to create the pwm myself in software.

Moves fingers, flips off everybody, plays my midi controller
Using a
  I always wanted to make something that is not too hard, yet looks cool. Not long ago I saw Gareth's post about an Arduino Hand … Read more

Geared up Servo

Ok, thanx to Ignoblegnome idea I have done my 360° servo

First i started cutting pieces of PVC, i took a bunch of screw and nuts in order to build the frame for my superservo...

but suddenly Gareth appears in my mind and say: "Use the polymorph Luke..." :O

yeah right, very easy, 10 minutes of work and it's done, very sturdy and precice.

 

Now i can sweep my sensor in 360° :D

Avoids obstacles, follow the line and solves mazes
Using a
<added basic Maze Solving video> <added wii nunchuk control video> <added line following video> Read more

minimum torque for 20 kg robot (53pound)

I'm wondering if the tracked robot I'm building will have enough torque...
It weighs 20kg( really max)
wheels radius (wheels and tracks) 4.5cm  1.8in
I have 2 motors giving 2000 rpm, 0.2n.M 28.3in-ozf
I wanted to use a 1:1 ratio for doing speed, and a 2:1 for climbing. max speed at 1:1 about 20kmh, 12mph.

Arduino Shield for building robots

I've been asked by a few people from different places if there is a simple way to use an Arduino to build robots. I explained there are ready made boards like Roboduino, Romeo, Motoruino, etc. that can be used. Or a custom compatible board. I told them that I went both ways, mostly because Roboduino doesn't have an H-bridge onboard, so I designed my own customizable board, R-Dev-Ino. Usually people are puzzled with all that information, as they have heard about Arduino, some have used it in art projects or so, but did not hear about the other variants. Seems complicated...

Using Xbee for wireless program uploads and debugging with picaxe

Xbee_attempt_1.jpg

I have recently tried to use my Xbee modules to perform wireless downloads and debugging for Mr. Tidy but have had no luck.

The Xbee is a 3.3V device so I have translated the voltages ok. The Xbee manual states that by default the modules work transparently. BUT it also states that the idle state should be high, picaxe wants a low idle state so perhaps I just need to invert the signals. The next problem then is do I invert on the PC side as well??

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.

Autonomously vacuum small debris and recharge
Using a
UPDATE: NEW VAC, CHASSIS, ETC. NO NEW VIDS :( The ever-popular autonomous, self-charging, vacuum robot. Inspired by the old OMNI magazines photovore, of all … Read more

When robot programmers get board

Hi all,

I'm new here. I found this on Youtube and thought you might enjoy it.

So after lots of hard-work, frustation, time, spending money on wrong parts; I built a robot. Its a Photovore based on NPN transistors. when its LDRs are pointed … Read more
This tiny module can control two motors, 1 A peak each, and you can daisy-chain multiple units to control up to 62 motors with a single serial line. You can … Read more
Navigate around via ultrasound, Navigate Around Obstacles, Remote Controlled via Internet
Using a
I have just finished the modification of the bot, I added a laser for use with cmucam. I finally managed to operate the joystick with my small robot ....! ...   Read more
Skydiver can move on the ground or be lifted on a weather balloon. During its whole mission the robot measures the background  resp. cosmic radiation and capture … Read more
Computer Numerical Control. Process job request to mill oblects via 3 axis'.
Using a
Built based on www.buildyourcnc.com, in conjunction with the companion book.   I know it's been done before, but I wanted it myself. I have completed about 98% of … Read more
This is a great little autonomous robot project using an arduino that can easily be completed in a short amount of time. We used a Modern Device RBBB (Really Bare … Read more
  Всем привет ! Недавно создал статью на сайте http://rassionrobots.ucoz.ru/news/svetofil_na_batarejke/2010-07-02-176 о … Read more
Navigate around via ultrasound, barks when someone knocks on the door.
Using a

OSP

Ok so for one i moved it to a blog and two it now has some different functions.

The first thing i added was a password. In-order to get to the main menu, you have to type in a sequence using the input buttons.

The second new thing is the distance feature. I sat down and changed the sharp's numbers to inches and figured out to what extent to change the distance to the next one. It is pretty accurate but only goes up to 12in and down to 4in.

navigates via ultrasound, "identifies" milkshake bottles and drives away from them
Using a
Following on from Djeff-209 MkI. In order to replace a slipping drive sprocket, I had to change the layout a bit. I also added the code for very limited object … Read more

Steampunk Robot

I attended the 2010 Steampunk Worlds Fair in Piscataway, NJ.

This bot took first place at the Mad Science Contest.

Here is a less dramatic, but more in focus picture.