Let's Make Robots!


I've been cooped up in a hotel room while my wife is slowly getting over complications. Hopefully we leave Friday for home.

However, I did order a few things last night, including an Odroid-XU3 Lite. This is an 8 core ARM system with 2GB RAM. Think of it as a double strength RasPi 2 on steroids. I think it might be able to run some interesting AI software.

I'm hoping to run a version of OpenCog on it and compare this with the NUC.

My plans for building robots: The Troupe

My major plans for building robots is for the three main robots of the Troupe: Grouco, Harpo, and Chico. In addition there will be smaller prototypes: Bilbo, Frodo, and others. The Troupe will all be Retro-Futuristic.

The prototypes:

  1. Bilbo is a balancing robot using OpenBeam beams, 3d printed levels and motor mounts, and a Teensy 3.1 to handle the balancing. My plans include trying to put the algorithm on an Arduino once I am satisfied with it.

  2. Frodo is an iCreate 2 that will be used to prototype sensors.


Blue footed Bobbie!

Thanks to Oss, I have a Blue footed Bobbie now!

I have the servos on it and a Digispark soldered up.  I will make a uC/servo/ubec harness next week sometime. Will post pics back on my progress.  Thanks again Oss!


Overall Structure of My Hexapod Program

I've been trying to add additional features to my hexapod code for several weeks now. As I mentioned in my last blog, I've spent some of this time freeing up RAM. While I've made a little progress towards adding some the features I desire, I haven't made nearly as much progress as I had hoped. I'm hoping my fellow LRMians won't begrudge my effort to get my taughts straight in my brain my posting them as blogs.

Making Room In the Propeller RAM for More Features

This is another "thinking out loud" blog. A couple of weeks ago I mentioned to Gareth I was down to 798 free (32-bit) longs. Since I knew I wanted to add additional features, I needed to figure out a way of freeing up some RAM.

Maple Mini ebay clone

I was looking at eBay one night and saw a Maple Mini clone. It was under $5 so I took a chance. For any that don't know, the Maple boards are Arduino like uC's designed by Leaf Labs. They make ARM Cortex controller boards. This little board has the following short list specs:

Reflections on Hoff

I haven't been able to substantiate or dispel the note about our friend and my likely relative hoff70. What I can say is that repraff.com lost its place on the web two days ago. It's safe to say that if hoff isn't dead, in some sense he's killing his online identity.

Geologic Inspection Rover based on the Wild Thumper Design


I see that Jameco.com has the same type of motor used in the Wild Thumper (http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_2150491_-1).  I will likely buy motors from Jameco, and try to install them in lengths of PVC pipe like the Instructables project showed.  If anyone has another source for similar motors, please let me know.

CSVPOVD - Charlieplexing Saccadic Valentine's Persostence of Vision Display

Happy Valentine with this strangely named new device!

CSVPOVD in action

My artificial neuron approach

February 12, 2015

A single artificial neuron can represent some simple Boolean functions like OR, AND or NAND and some like XOR not, because a single artificial neuron can only learn linearly separable mappings.

Example. Perceptron for the AND function:

Beginner Steps for a Grand Project

What I want to build iare smart gliders capable of flying in formations, like the way flocks of starlings fly (called murmurations).

See @aerobotec on Twitter to read further about their purpose and other details about how they will operate.

The details of this project are way beyond my capabilities as an individual, but as I move forward perhaps the project will develop interest in a larger community.

Security System

Hi all,

To start with, this has nothing to do with robots. I'm seeking advice on a security system.

I've been tasked with securing a length of fencing, to prevent a reoccurring intruder. This is to help a friend, who is feeling threatened by someone creeping around at night and any advice, you can offer will be received most graciously.

Web based Voice recognition

First experiments of the Virtual InMoov ( VinMoov ) being controlled by a web based voice recognition service.

Press below for video :-

Basic set up is using :-
InMoov Meshes. www.inmoov.fr
Blender Game Engine www.blender.org
MyRobotLab Software www.myrobotlab.org
Virtual serial port bridge
The MRL software uses a live web link to decode voice input

Beer Can Collection

When I finish my work and return home on a Friday, I'm often in need of relaxation, after all I've worked hard all week. I've found drinking beer to be an excellent form of relaxation, however this activity can meet with numerous pitfalls. For example, it would appear, the bottomless beer can has not yet been devised by our scientists, or inventers. The work around to this problem is usually to store a set amount of beer in individual containers, often made of aluminum, with a convenient opener on it's top side, which doubles as a mouth piece.

Local RS RIP... RS Booty!

$28 (with taxes) from RadioShack

$15 for the Yun!!!!

$1.50 ea for the Prop Q-start

$3 per camera

MS $2.50

Wii Nunchuck Control Scheme

Edit: I don't expect many of you to read though this blog. This ended up being a way to "think out loud". It helped to write these ideas down.

It's probably not a great idea, but I'm using a wireless Wii Nunchuck as the remote on my hexapod.

On start up the hexapod uses the joystick as direction control with rotation control performed by pressing the "Z" button and rotating the Nunchuck to one side or the other.

I'm trying to come up with a way of having the input from the Nunchuck able to control different aspects of the robot.

Reverse engineering OWI robot arm

Ok i got to play with a OWI robot arm, so i tried to hack it with microbrains.
The arm is driven with 5 dc motors and a light.
It's connected to a digital controller trough a 8pin ribbon cable.
the connections in the ribbon cable are
0 left + vcc
1 base rotate left/right
2 1 segment up/down
3 2 segment up/down
4 3 segment up/down
5 pincer open/close
6 light on/off
7 right + vcc

connecting 1,2,3,4,5,6 to 0 makes the first action; connecting 1,2,3,4,5,6 to 7 does the opposite action.

What Got Me Interested in Robotics

Ok I am an english major who always thought I was hopeless when it came to technology and never expected to actually consider making a robot.

That was before I met my boyfriend who not only writes code for an app company but also recently bought several Arduino kits, couple that with Baymax from Big Hero 6 which got me obsessed with the idea and there really was no other option but to learn how to make my own robot. (plus my boyfirend insisted I learn with him)

Mystery object time - Update "Solved"

Just for fun here is a 3D printed Mystery Object for you to ponder over.

Have a wild stab at guessing and post below.......

.... The blue object is the key to it all....

PS. if you dont need a clue check the name of the image...

Update video :-

Click Image below ......

BoB Jr. (Updated)

Starting a BoB project after seeing Deshipu's μBoB.