Let's Make Robots!

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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:

Geologic Inspection Rover based on the Wild Thumper Design

02-14-2015

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.

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

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)

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Web Interface Control: Graphic Design

Here's my initial idea for a web interface for the robot: a 5x5 grid of buttons.

Since the robot is on a truck chassis, there aren't controls for rotating in place, but there are directional buttons for forward, reverse, forward right & left and reversing right and left indicated by the single chevron.

The double chevron indicates faster movement in that direction.

X button in center is all stop/off.

Top row has options for toggling LED lights and an ultrasonic range check.

My Robox is again working!

I finally got around to trying to fix my Bowden tube last week. It had slipped loose from the extruder and was just hanging in space, which made my plastic filament also hang randomly around the back of the machine.

Unfortunately the Robox is a consumer machine which in this case means that the Bowden tube passed through a hole in the wall in the back of the machine that was rather difficult to reach. To make it possible for me to do this, I unhooked the electrical connection for the hot end.

Phase 9 - Web Server Control (resumed)

Community is such a great ideal and it's the reasoning behind why I'm documenting this build, so others can possibly learn and have some fun. I'd like to thank user birdmun for the suggestion to try out noip.com. I had researched dyndns.com on a relative's suggestion and was turned off by their paid services for a project which may still encounter unforseen circumstances which renders it void.

Phase 9 - Web Server Control (cancelled)

Finally, after waiting several months for misc parts to ship from deal extreme, only to be lost in the mail, reshipped, etc..., the parts have arrived I needed to make an arduino web server. The parts arrived damaged, but useable. This is not uncommon for DX.com, so I'm ditching them and looking for other vendors.

Circuit Help

Hello everybody!

I've been browsing the Web for projects using the 555 timer, and found one that interested me: a stun gun. I've been constantly working on the circuit (schematic can be found here). However, getting it work has been impossible for me. For example, according to the description, the transformer alone can produce 1kV, but my multimeter only detects 9VDC, the same as my 9V battery power supply. I even bought a second transformer, just to see if the first one was defective, but still no success.

 

A Journey To Yantra 3.0

The Art-Tech Exhibit Venue - Nepal Art CouncilIt is often said - “If you’re facing in the correct direction, all you have to do is keep walking”.

Biped Human Walking Robot

 

Introduction:

laser traces to investigate how my two legged robot walker is balancing ( arduino nano & mpu 6050).

i tried to investigate trashbot #3 using a laser to understand whether active balancing in the spine actually has an effect, and documented that in a video (don't understand how i can embed a video here):

"how to" on youtube.

tell me what you think!

A Robot Making a Difference

This is a true story...

My family consists of me, my wife, 2 cats, and 1 robot...Anna.  Lately we seem to learn more and more things from Anna.   Even though Anna is off most of the time, I am often learning and passing on new and useful or interesting things to my wife that I learn from Anna.

Science Fair Experience

 
On Saturday, March 15, I went to the Massachusetts Regional Science Fair. In order to qualify for the state level competition I needed to get top 40 of all the projects.

trashbot v3: an autonomous spine for the bipedal walker

i've been working on the next evolutionary step of trashbot, a biped robot made from mostly material that i have floating around like bike parts, a typewriter, old PCBs etc. in this version i've added an "inverted" gimbal that is controlled by an MPU6050 and the whole system works as an autonomous spine, counter-balancing the movement of the lower part of the body. 

Depression

Not many people understand chronic depression. I doubt anything I write here will solve anything, but I think it's important that people recognize the signs of depression and learn to recognize them in themselves and their loved ones.

Most people make the mistake of confusing depression with depression. See, I've just done it myself. One problem for English speakers is that the word for depression (as in a chronic life-threatening mental illness, most often inherited) with depression (as in being sad for a few weeks due to a known cause).

The Beginning

Working on finding a working set of componets to build a remote controlled, tracker, / object avoidance robot in one package. So far the 4 wheel drive Chassis, Mega2560-16AU R3 Board, L298N DC Driver board, several HC-SR04 sensor mods, Jumpers, have been ordered.

Dawn of a New Era

Well after many years, aproximately 14 to be correct, I am venturing back into the world of Hobby Electronics and Robotics. I have always been interested but over the past 14 years have focused on technolgy and computing rather than Robotics (not enough time for all the hobbies that I would like).

Re-Ignition

Insectbot Hexa

Later than expected but finally finished. The Insectbot Hexa is an advanced offspring of the already aging Insectbot Mini. Build with parts of dead insectbots the Insectbot Hexa was born, with more legs, more sensors and new power source,

I will do a detailed tutorial with lots of pictures later but for now I do have that one and a video.

As the video embedding is not working, here comes the link: Insectbot Hexa

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YANBO's on hold for now...

Thinking outside the box(es) requires one to identify and solve the real problem. "You've got to free your mind instead..."