Let's Make Robots!

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dual control rc and arduino without a switch

i had made an airsoft tank and wanted it both to freeroam and be controlled by rc. and found it to be quite simple actualy using the ping code. this is just the begining of the code but the robot will nagigate with ping and when the rx is switched on will stop the arduino. and when switched off will let it continue. i did this using an unused channel on the rx. when the rx is swithed on but the tx is not it sends out no pulses but when the tx is switched on its send pulses high then a servos range. using the ping code it reads at 17 inches. so modding the ping code.

Weekend at WalMart

The new WalMart just opened last week here in Saskatoon.  I decided to visit it which was probably a mistake cause most of my time was spent looking for a parking spot and waiting in line to pay for stuff.  The reason I went was because supposedly this one is the largest one in western Canada.  I probably should have stayed home because I wasn't able to make any progress on my sumo last weekend, however I did find something cool.

The Valkyrie projects blog

Hi all,

If no one has anything against it, I will use this blog to post projects done with the Valkyrie.

To start with, here is the design flow I found to work well for doing stuff with the Valkyrie. Actually there are two flows, one for PCB making and another for cutting, milling etc. Note that I'm using Linux to do all my stuff, for Windows I have no clue which software to use. 

1. PCB's

a. The PCB is designed with Eagle which can be found here: http://www.cadsoft.de/

Walter Line Follow

Just a quick look at the beginning of my line follow set up...

Vendors I Like

I've noticed a few folks on LMR have mentioned their preferred vendors -- I though I might do the same on my blog.  There are more I'll probably add, but these folks are fresh in my mind. Everyone already knows about SparkFun, Adafruit, Electronics Goldmine, SeeedStudio/NKC Electronics and Gold Phoenix PCB -- this list includes stores I haven't seen mentioned.

__General-Purpose Vendors__

LMR's second year in pictures

What do you know? Memory Lane can be 4000 pixels long. Take a trip and share your memories with the rest of us as they shoot through your brain's déjà vu lobe. Any juicy anecdotes? Horror stories?

Do you recognise these fragments? Can you even tell how many there are? I dare you all to search a few node numbers. Heaven knows I tried and failed (for about 5% of them).

Propeller Expo 2010, Chicago

Just a note that the 2010 Propeller expo is coming up! I think Jeff is planning three, the first will be in Chicagoland (which I've learned means 'Outside Chicago') on May 15.  The other 2 will be later this year in Norwalk, OH & Rocklin, CA.  There's robotics stuff as well as more general microcontroller projects, food, presentations, etc.  Last year, the AttoPilot guy did a presentation about his awesome project (youtube video), which I thought was really interesting.

 

Dimensional Ultralancer: Vulcan Five Progress Update

Just a little update on the progress of Vulcan Five.

Low_Profile_Sumo_038.jpg

Part of my robot workshop.  The rest of it is in the basement.

Low_Profile_Sumo_039.jpg

Robot assistant Tanpopo posing with Vulcan Five.

Low_Profile_Sumo_032.jpg

Oscilloscope set up ready to debug.

The Pulse - 2010w04

LMR on the Brain
Sensing the living LMR community since 2008w43.

Happy Birthday

All over again

PolyMorph goes Psycho-Delic

Just a taster .............. the secret will be revealed after the " Commercial Break"........

PolyMorphcoloured_017.jpg

 

PolyMorphcoloured_016.jpg

 

"Burnt Umber" ...........burnt thumber ...... or the synthetic leather look.

PolyMorphcoloured_019.jpg

 

Blind Lemon Build Blog

Note: This is a reverse chronologic blog, with the newest entries at the top.

See the Blind Lemon robot page for more info.

  • Video1: Y-Bridge motor driver test
  • Video 2: Function test


Update 2011-07-10

 

I was asked to bring Blind Lemon along to appear with me on Make: Live this coming Wednesday. Poor BL had been sitting in a box, and was a bit worse for wear from my kids playing with him.

Still thinking about the name - bot

Hi LMR, been thinking about this robot... for the chassis, i will be using a nitro car chassis, and going to bend it the shape i want, its 2mm pink anodized aluminium(they didnt give colour choices lol)

will be using the tamiya dual gearboxes, havent used them before, so if they aren't what i expect i'll will have to get something else xD 

 

here's some skecth uping of what i expect to have:

robot3.jpg

 

 

 

Finally ordered parts...

Well, I finally ordered some parts again. This time from Solarbotics because of their support guarantee. Plus they've been really cool with emailing back and forth with me as of late.

Here comes science (kids)

A lot of you already know this but I thought I should give those of you who grew up in the 80's or have kids. They Might Be Giants is doing kid's albums about science now and the music kicks the most ass. The album is called "here comes science" and is awsome all the way through. My kids are now officially addicted to the elements song. Here it is:

http://www.youtube.com/watch?v=d0zION8xjbM

tracked robot - assembly

after being seriously sidetraked by all these cnc projects on LMR, i finally managed to assemble my robot.

everything went together smoothly.

i just underestimated the amount of space inside the bot, it is pretty cramped in there with the electronics, battery, servo and wires.

a small on/off button was glued to the back with a drop of epoxy.

technically speaking this is still no robot since it is lifeless.

so now comes the fun part, giving the robot a soul, writing the code... 

RepRap Stepper Driver v1.2 and Next Gen CNC

In the picture from top-left, clockwise to bottom-left: the terminal block (24V power up to 13A), the 2 X-axis drivers, the Y-axis driver (blue heat sink), and the Z-axis driver (blue heat sink), the Arduino controller (direction x3/enable x3/step x3), and just below the terminal block there is a small 9V regulator board to shift 24V down to 9V for the Arduino.  Everything is mounted on an MDF board, and the board is mounted with baling wire.

 

Good parts!

I went to the pawn shop today and picked up an old RC car and a robot vacuum for $10 - total. Not a bad deal. I also go an old mouse and a book in that price.

The vacuum uses a bump sensor of some sort, I'm gonna take it apart and figure it all out. The RC car will probably have a brain installed one day. I just need to learn how to do all that first :) 

Back in business

It's been quite a while since I've been active on LMR. I have been working a lot on Java programming instead of my robots, but now I'm back with new ideas for my "Robot Hansen" robot who will get a serious upgrade from his current picaxe 40x1 chip: He will have a LEGO NXT controller as main brain, a cmucam3 for vision, several ATtiny26 based sensors and actuators. All this because he will probably be going to DTU Robocup 2010.

China 2010

21-5-2010

A few things have happened this last month. I meet Xiao Yue (Little Moon) about a month before I went to Australia. She can't speak much English and my Chinese is still very bad but she seems to like me anyway.

This was taken on her birthday. There was a bit of a food fight with the cake so we ended up with cream on our faces.

Mystery Object :- what is this mysterious thing i found lurking in my office corner

Here is a strange mystery Object i luckily caught on Video earlier this evening roaming around my office........

 Is it a UFO ........?

What high tech spacey material did i make it from ........?

What is its sole purpose in life ...... ?

All Crazy......sane ..... or insane guesses Welcome.......Gareth

For you None Streamers out there press (here)

Birthday Tattoo!!

Well folks,

I just had the 33rd aniversary of my birth and as a gift, my wife gave me 3 more seasons of MacGyver for the DVD collection but more importantly, TATTOOS!!! Yup, a big phat gift cert.!!!! Now, why would I post this news on a geek website like this one? Well, I am going to finally get my wings. Wings of wax on my upper back to remind me of the past times I flew too close to the sun and not to again. Now I needed a roundish symbol to go in the middle and pondered what to do for a while now... I have decided (here comes the geek part)...

Omega.

tracked robot - the electronics

today i inhaled a good dose of solder fumes and got the board finnished. 

i used a 0.5mm copper or brass rod to make the powerlines, the rest of the connection were made with wirewrap cable(30AWG).

the perfboard has square pads which i prefer over round pads because it is easier to connect 2 adjacent square pads.

the L293D 1,2EN & 3,4EN pins are pwm driven and the inputs 1A 2A 3A 4A determine the direction so 6 pins of the ATMEGA168 are used to drive the 2 motors.

RepRap Conversion for a set of Probotix SideStep Stepper Motor Drivers

Abstract

An Arduino or similar microcontroller shall be used to create a RepRap-style front-end for the HobbyCNC EZ Driver board or similar DB-25 controlled stepper driver.  This front-end microcontroller application would allow RepRap applications to control a number of powerful CNC machines.

Introduction

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