Let's Make Robots!

Maze Solving Robot Progress

Updates

Progress on my Maze Solver:
Mainboard: Schematic Done, Board Layout Done
Sensor Board: Schematic Done, Board Layout Done
Programming: Haven't started
CAD: Done!

Finished the sensor board, took some screenshots of it in cad, added to attachments.

I will package all necessary files in a zip so anybody can build this robot. I just recieved the PCB materials today, so hopefully tomorrow (Jan 19) I can etch the boards and start assembling the robot.

tracked robot - the frame

after cutting the pieces i sanded the edges and glued everything together.

the front curved part is a lamination of 19 identical pieces.

i inserted machine screw insulators in the holes that will accept the shafts, these are in nylon and will act as bearings.

the slots in the back of the frame are for the adjustment of the track tension and are long enough so i can choose between A and C gearing.

the triangular part is a small turret to mount the GP2D12 on the servo.

 tracked_robot_07.png

Slightly more advanced LDR eye

Read this history first, if you have an hour to kill.

The challenge: make your bot rove around your house. Use no active beacons. Use observations by your bot only. Now, does your bot know where it is?

One possible answer: an eye and a brain.

Room Recognition

Each room in the house has a unique lighting situation. A simple eye that looks around in eight directions would "see" a pattern of light and dark segments. Each cell is connected to one ADC on your uC.

tracked robot - concept

first of all i would like to say hello to the LMR crowd and thank fritsl for creating this nice place where we can all share our robot experiences and have fun.

that being said let's talk about robots.

tracked_robot_02.png

tracked_robot_01.png 

i used rhino3d to design the frame which is based on the tamiya twin-motor gearbox(#70097) and the track&wheel set(#70100).

The most useless machine ever

This is a "most useless machine" i made. I used a instructable but it was a comment by "compukidmike" that was the schematic i used. 

here is compukidmike's schematic picture thing  http://www.instructables.com/files/deriv/FCQ/XPAC/G43EFYKB/FCQXPACG43EFYKB.SMALL.jpg 

Walter Update

Walter has been stripped down to a bare chassis...

Walter is being painted.

Damn, I'm getting close.

What I want...

I've been thinking, while troubleshooting, a lot about what I would like in a bot. At first I'd  thought about a bipedal bot, but tracks are more stable, easier to work with, require less programming and unless you are using a large base for a bot it won't do stairs.  To be autonomous, to be able to do tasks without human control, such as recharging itself and performing basic tasks.

Propeller Platform Video Howto

I got a new camera for Christmas (Happy New Year!), and I decided to make a 'how to put together a Propeller Platform' video.  Are these types of videos useful?

I don't think a video alone is enough for a howto (the Prop Platform has a written guide, too), but I was thinking there are a few 'advanced' techniques that beginners might benefit from seeing on video.  What do you think?

Motor Controller Board

Well I've almost had 3 weeks offline and got a ton of thinking done.  The physical design is basically the same, going to use a PicAxe 14M to control four DC motors with two L293Ds. The picaxe will be optically isolated from the arduino, so if the motors, an IC or a wire shorts out and decides it doesn't want to go alone that it doesn't have the arduino as an option as a buddy in IC heaven or hell.

Finally back online

I had to put my laptop in the shop because the mousepad was screwy and it wouldn't recognize a regular mouse. It's all good and shiny now though. Back to working on Leo.

 Mech  

A new sexy mobile phone...

Kari and I have been with Verizon for almost 10 years now and during that time, every 2 years, we get a new, free, nifty phone when we re-up our contract. Now, each and every time I am truly amazed how much cooler my new phone is and how much my old one sucked. Once again, this has happened. I just got a new Envy touch and well... MAN! I mean, really --holy crap!

 What you will find below is FROM A FRIGGIN' CELL PHONE!! (It has a macro function!)

Can you believe the quality?!?!

1219091740.jpg

 

"Moooo" Rare Swiss Cow Project has begun

Following on from the Laser Experiments i have decided to attach it to some kind of walking Robot.

I am now a avid fan of Theo Jansen -  after rik brought him to light in his Blog.

So far i have Prototyped two pairs of "Theo" legs using "MindStorms" as an experimental base.

It worked better than i could have imagined - these legs go like a Cow on its way to the milking parlour.........

Only problem now is what  medium shall i use to make the final version.....

Cheap and small swarmbots

So. I'm finally building swarmbots. My goal is to have bot that is small (should be 25mm x 25mm, will be ~30mmx30mm) and cheap (less than 50$ per one. even when building only one).

 

 

Woohoo, more bot work done

A little more done, well, another phase started anyway, on my XMOS challenge bot(s).

4173772418_a1165186d8_o.png

From the bottom up, an ATMega168 @ 8MHz (with lilypad bootloader), a 74LS14 to put the schmitt trigger thingies on the wheel encoders, and a SN754410 H-Bridge to actually run the motors. Top-right is the KA378R05 3A LDO regulator.

Now to see if it actually works.

 

Laser Distancing Probe using WiiMote - Brought to you by Rare Swiss Cow Productions

Following on from a post here "LoMoR Blog"

I have at long last started work on a Laser Distancing Probe using a WiiMote.

Basically i have equiped two Servos with simple Lasers and strapped it to a WiiMote.

I can alter the angle of the two laser beams (they can be fixed at one angle .....but where is the fun in that)

errrr - i also worked out that you actually only need one Laser (but again two is more fun)

C328R camera and Arduino

Well I've decided to replace my 2.4 ghz wireless camera on Ardbot with this guy:

JPEG Color Camera - UART Interface

While it isn't as capable as the video camera I had planned to use, it has the advantage of having a serial interface that can communicate with the Arduino, uses 3.3v, so my hope is to be able to stream the JPEG images via XBEE to my PC.

How to connect SRF05 with a ribbon cable? (I'm not sure either!)

Well, I was browsing like 100s of robots on this website, many of which use the SRF05 (SRF005) and I see that HEAPS ( I did that on purpose) of them use ribbon cables (which are included when you buy this picaxe 28 pin project board. It seems much neater and easier. It would make things easier and save money. Can any1 tell me how to do this?

Coil Gun Rifle

I have been making soem good progress on the Coil Gun Rifle:

CoilGunRifle.jpgCoilGunRifle_2.jpg

 

Larger images in attachments.

 

Mr. General Robot

Well I'm officially starting work on my Mr. General robot. I just received the kit today when I got home and was thrilled to see all that was inside! Tomorrow I will start all of the soldering and assembly of the kit. I'll be modifying it quite a bit for the Mr. General Challenge. I just wanted to start this blog to record my building process until it's complete.

Things To Do: