Let's Make Robots!

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Controlling a Raspberry Pi / Arduino Bot from the Internet Part 2 of 3

This is part two of a three part Series to explain how I control my BotTwo semi-Autonomous Robot from a webpage on the Internet. 

Pixy Out of Box

Well, it finally came in, the Pixy CMUcam5.

I'm still working with it, but wanted to make a real quick note about a few things.

SmartRap received

Here we are: I received all the parts to build my own SmartRap

For the moment, just a quick unboxing:

http://www.flickr.com/photos/titimoby/sets/72157642869743083/

LMR in Google

I am replying to the message Frits posted on the start page.

I did a qick check about the google presence and there is no sign of disappearance. I am sure it just had a small hickup due the website changing (owner) and/or registration.

As we all want LMR to be the #1 I am also putting links whereever I see fit. Please do the same but do not spam other forums, just place the link where you think it's appropriate.

 

Dagu Robotic Arm 6DoF - Bacuri02 Project

I recently received my Dagu Robotic Arm 6 DOF with Arexx control board 32 servos.

My original project is to use an Arduino Mega to control the arm and then make a wifi connection joystick control.

As I have not received my Arduino Mega board, I started tinkering in Arexx control board that I received along with the robotic arm. Along with the kit also came with a CD ROM which I believed the program to be installed on the computer to control the arm.

Graphene Rocks

I have been searching for some conductive ink for some projects for some time now, its not so easy to get and very expensive.

I have been following :- Robert Murray Smith he is a prolific designer .... of all sorts....

Luckily for me he is currently working on a series of Graphene based products - one of which is conductive ink (just what G needs)

 

Thanks!

Two days back I got a parcel. It was from Thailand,and to my surprise it contained 5 pcs of TQFP32 to DIP breakout boards. First of all I was confused as Ladvien resides in US and he told me that he might send something.

Thanks a lot ladvien,will post pics soon. This is my first SMD soldering. Have soldered three MCUs on them. I shall be glad if I can be of any help to you. Thanks again.

Long Live LMR   .....................ALABTU !!!!!!!!!!!!

I hope it's a phase

Lately I can barely bring myself to look at the lab.

DAGU CNC mill controller - first prototype

I've been developing a CNC controller for DAGU. The project originally started late 2012 but got shelved because of other projects. Now we've dusted it off and plan to finish it in the next 6 months. Unfortunately blog post don't support video so watch the video that explains the basics by clicking on the link.

Now that was FAAAST!

Hey there guys,

A week earlier, our fantastic LMR member Lumi was kind enough to sponsor me a gripper arm and a pan tilt bracket (for 3DOF). I was planning to use it in a project for a local exhibition. More on that soon! Let's see how the shipping went.

Kossel Build

03/11/14

I'll fix pics when I get home.  Was trying image hosting to relieve Juliette.  Didn't work.

Well, post came.

I finall have "all" the pieces for my 3D printer.  I sourced a few of the major parts and ended up buying the rest from www.builda3dprinter.eu.  And today that order came in.  So, let me review.

 

What would you want on a Propeller Quickstart "do it all" shield?

After playing with the Propeller Quickstart, I'm thinking it could use a "shield" to make it more "Arduino" like.

Something like the Mega Sensor Shield, but with a few more goodies. I'm quite a newbie at electronics, so pardon my innocence..... ;-)

 

External Power Supplies

Mega blocks - DRC seeker working...

Well.... I set myself the task of creating a robot that would learn an object then go and find it using vision....

Mission accomplished.... well, its probably not very robust but that's a problem for another day...

Today's task was the Mega Block challenge -  an area bordered by Mega Blocks (it's what the kids use and have quite detailed images on them that I can use as objects to find):

Mega blocks - DRC seeker working...

Well.... I set myself the task of creating a robot that would learn an object then go and find it using vision....

Mission accomplished.... well, its probably not very robust but that's a problem for another day...

Today's task was the Mega Block challenge -  an area bordered by Mega Blocks (it's what the kids use and have quite detailed images on them that I can use as objects to find):

Eggbot may not go further

Here's the first hardware run on the next project-just a big cheap egg platform. I was hoping to make this my first Propeller robot but I'm not sure if this is worthy of such an elegant processor.  Think I'll get better traction and balance out of those little black ducks with more weight over the center?  Such small wheels-I don't know if encoders are an option, and that one side is going about half the other. Right now the steel castor in the back weighs more than the rest of the platform combined.  Gotta come up with a good battery solution too.

Generals "Army"

Whats up the Generals Sleevy ?

His Army of course.......

Robot arm is build ... works better than calculated.... just one more bit to print to connect it to the S2 unit.

Short post on Successful data out of OSLRF-01 Laser Range Finder

It's late and I'm going to bed. My eyes are blurry, and I've got a headache... but!!!

I'm getting reliable (for the most part) Distance readings out of the OSLRF-01 as evidenced here in my putty dump.  The "ACTUAL" distance to target was in fact 2.67m.  I've got a fairly consistent reflection or ghost at 0.67 and few more stragglers that I will work to filter, but I'm quite pleased.

DRC: object recognition using Raspberry Pi

Well... now for some simple object recognition...

The program flow:

a) take an image; take a subsection as the reference object - calculate and store the SIFT descriptors for this image

SIFT descriptors

b) rotate DRC by 180 degrees.

c) take an image

d) calc SIFT descriptors and look for matches with the reference

e) if not many matches - rotate a little and go back to c)

Biped Howto: Stable locomotion

+++ UPDATE (12-march-2014): Rename title as "Biped Howto".

 

Biped Howto: Inverse kinematics

+++ UPDATE (12-march-2014): Rename title as "Biped Howto".

Neo

My S2 Neo Pixel Leds  thanks for the work with the NeoPixel code from Duane.... keep up the good work ;-)


They will be used as visual panel for battery voltage &or distance to object &or snazzy RoboCop look &or KittCar scanner lights

Prototype of OSLRF01 Arduino Scanning LIDAR (Under $150)

I've finally got pictures to show off the OSLRF-01 Open Source Laser Range Finder.  I've mounted it to a sturdy servo, and am running both currently with An Arduino FIO ... simply because that's the only available Arduino I have at the moment. 

I am also getting boards made up around the ATtiny84 that will sit as a daughterboard on this unit.   But the FIO prototype is to help me get functional code working NOW...

Biped Howto: Moving servos

+++ UPDATE (12-march-2014): Rename title as "Biped Howto".

Hi, I will try to explain, in a very simplistic manner, the way in which servo motors can be controlled.

Servo motors are controlled by a PWM signal, in which the active part of the signal (known as duty cycle) define the amount of degrees the servo will rotate.

AI.Frame funding

I've got in contact with the people behind the AI.Frame robots and there are some quite interesting designs. We've got some kits to try them. Now AI.Frame is going the next step and want to collect some funds for a first batch production.

http://www.pozible.com/project/178499

You might recognize some stuff in the pictures. Yeah, my friend and me took that pictures in our DFRobot office.

Vader Vibes

Starting this blog as a place for me to throw down my thoughts about options for my Service Droid, VADER:

http://letsmakerobots.com/node/39884

At times where I'm anxious to work on Vader but can't, atleast I can blog about it!  Right now is a good example: my 2 month old daughter is asleep in my arms. I may be having to type with one hand but the progress feels good!

First off, I'm considering a tweak to the acronym."Very Advanced" is a little over the top. Maybe "Virtually Advanced" or "Very Amateur".

I just received my OSLRF laser Range Finder!

So I received this awesome package in the mail yesterday from LightWare Optoelectronics in South Africa.

GOTO FAIL:The next time you feel bad about coding, refer to this.

I hope I'm not the only one who spotted this on Wired.com, but it's nice to know that even the biggest baddest a$$es in coding make mistakes.  This isn't one that would throw a compilation in xCode though-or even get noticed.

Do you see it?  Here's how Wired explains it: