Let's Make Robots!

Blogs

Sunny - failed blog post

May I introduce Sunny. He's a direct offspring of the famous InMoov.

We started building Sunny (well, I am actually not doing much work but giving a helping hand and advises) her ein DFRobot for display at the Shanghai Maker Carnival in mid October.

Right now the head is almost done and we are planning to move down step by step.

The head contains a camera and a speaker to stream video from his left eye and talking via a Python script Espeak running on a Cubieboard.

The beauty and the beast - the magical conversion of a gun

I have not posted any robot in ages but I am still doing stuff :-)

For a project I have in mind I made and purchased some gadgets, also this Nerf gun

Unboxing the Robox

I did have time to unbox this, but I didn't have the time to actually use it or even to clear a spot for it. That's for Wednesday when I eventually wake up again. The Unboxing was easy and it all seems ready to work once I read the instructions and remove various pieces of packing tape and such.

My 3d Printer has Arrived!

Many months ago I found a 3d printer in Kickstarter that looked like a good combination of ability and cost. This was the Robox. And like most complicated Kickstarter campaigns they were late. So I waited and waited until this morning when I got the call!

Hopefully sometime this afternoon I will get my shiny new printer and be able to print robot parts. They should also be sending some filament, hopefully in the same box. Otherwise I won't be able to print anything until I get some. Maybe today I can place an order from Taulman for some nylon.

Use an Arduino to get to the Moon

So, this whole Maker movement has got you excited, and the rocket you are building in your backyard is nearing completion.  But you haven't decided on a navigation computer yet.  You were thinking of using a laptop, but your daughter needs it for school.  Maybe a Beaglebone Black.  Darn!  Seems they are sold out everywhere.  You look around your lab, but all you can find is an Arduino. At first you pass right over it.  But when you can't find anything else, you start to wonder, "Could it get me to the moon?"

Gee Thanks, Google...

I went to Google looking for an image of a particular kind of diagram to use as an example for the flow of a process I was working on today.  It took me a few minutes to figure out what was going on:

Not what I had in mind.

(this was NOT the kind of "State Table" I had in mind, but now I have to make one of Iowa to keep in my cubicle.)

Update :- Can someone ID this fish

Can someone ID this fish.....

 


 

Update 20140916 :-

STL Files posted vere here :-

What every robot builder needs to know about

It is probably safe to say that every member of LMR is interested in machines that interact with their environment.  Interacting with the environment means getting information from it to provide feedback to the machine.  In the  electronics and computer worlds, "information" means "signals."  And since most of our robots use digital signals, whether with discrete logic chips or some sort of computer, and our machines need to do some sort of processing on those signals, we all need to be familiar with Digital Signal Processing (DSP). One note before we go on.

bdkdev 0.1.0 for windows released

My NXP LPC1114 downloader app version 0.1.0a has finally been released.  Right now only the Windows installer is available. The same executable will run on Linux with the mono runtime installed.  The files from the install directory can be copied to a Linux machine after it is installed on Windows if you want to try that.

UPDATE:   The raw Linux files are also available at that same link.  They may also work on a Mac with mono installed, but I have no way of trying that.  If anyone tries it, I would be interested in the results.

ST Nucleo F411RE upgrade for Blizzard Bot

Aug 31, 2014

For ten dollars and change from Mouser, I can't resist. The 24MHz STM32Discovery board now in use is getting the boot to be replaced with a ST Nucleo F411RE.

An added bonus is the access to the mbed.org development environment.

Features

what is needed for an animated biped robot

For my project (http://letsmakerobots.com/blog/carloroosen/pet-work-progress) I need complex behavior and nice animation. My example is the NAO robot (http://www.aldebaran.com/en).

One of the things I am thinking of is mixing animation layers. Say you have one animation layer that does a basic biped walk. And another layer contains a balancing correction. And a third layer might contain head movement. Let's call them A, B and C.

Capturing Data from 7-Segment Display

Something I've wanted to do for a while is to be able to digitize the data from cheap sensors with a 7-segment display.

I decided to give it a try with some USB charge meters.

I purchased four of these meters.

I opened up one of the blue ones and probed the pins to see how the 7-segments were wired.

Pet (work in progress)

I have not built my first robot yet - waiting for the parts. But I have the plans for my second robot ready. He, just a little ambition :D.  My second project will be a prototype for a robot that can be sold as a consumer robot. I will call it Pet - working title.

This is how I imagine it. When you order Pet, it will come in a nicely designed box. In that box you will find a shiny sphere, a little smaller than a soccer ball. One size of the ball will be flat. You will also find a smaller box that contains a base plate with an electrical cable. No on/off switch. No manual.

Raspberry Pi Model B+ Review posted

Sorry guys, I forgot to mention it earlier!

As you probably know, the Raspberry Pi Foundation brought out the new Raspberry Pi Model B+ recently.

I got my hands on it mid-July, and after torture testing it wrote a rather large review.

Raspberry Pi Model A / B / B+ Review

MCUs a dying Breed (eg.Arduino...

Are MCUs a dying Breed (eg.Arduino......Propeller .... Picaxe)


How would you react if I were to predict that by the end of this year our favourite microprocessors would only exist as a Ghost in the works.......


Background :-

mBuino unboxing.

A couple of months ago, I saw the Kickstarter for the mBuino, an ARM Cortex M0 running at 50mhz and 3.3v.  It's about the size of an Arduino Nano, and cost 10$ USD. It is produced by GHI Electronics, and can be had from Outrageouscircuits

The board came packed in a padded mailer bag with a anti-static bag inside:

COOL GEARED MOTORS

I just bought some pretty cool wheels and motors for my future mobot!! I'm gonna make it some time next week. I hope I can do it.

https://www.youtube.com/watch?v=eNfOZKkAUlo

ALS ICE bucket challenge for makers

As you all already know, the ALS ICE bucket challenge is flooding the internet with funny and not so funny videos of people getting a cold ice water shower for a good reason. We from DFRobot also did our part to get some videos more online.

We hijacked that challenge and extended it to all makers around the world. Makers who get challenged need to build a rig which somehow poures the water out of the bucket or something like that

Hello there.......Silicone!

Hello guys and hello there, Silicone.

THE (summed-up) ADVENTURE:

After searching a couple of shops in Kathmandu, I narrowed my search down to ones that dealt in paint, hardware, etc. like stuff. I also found a tube of silicone in one of them and that was exactly what I needed to mould a couple of tracks for Nano Rover in his new MB-3434 look.

Review - Veyron 24-Channel Servo Driver

Hi all, I've been a lurker here on LMR for a about a year but haven't posted anything besides a few comments/questions here and there. So, I suppose I should introduce myself! I'm a 35 year old Canadian tech support analyst. I've always been into computers but I only recently over the past year or so gotten into programming/robotics with the advent of the Raspberry Pi. Python is my main programming language, and I'm a noob at that.

Phase 9 - Web Control (Serial Preview/Wannabe Web Control)

The thought occurred to me to test out a basic sketch for the wireless control portion in phase 9. Even though I'm not there yet, I'll be waiting on parts for awhile and thought to try my hand at serial commands. I do a lot of "remote desktop"-ing for work and use a free program called TeamViewer to remotely control a computer when there is a problem. I'm not an IT expert, but I'm just dangerous in enough areas that I get called on to do things like that from time to time.

Phase 5 - Project Enclosure & Stock Chassis Issues

If you've not been following along, I have a photobucket album with a ton of pictures for this build.

Review: RobotKits.co.in 12V DC Motor with Gearbox

This is a short review of the RobotKits.co.in 12V DC Motor with Gearbox.

Review: RobotKits.co.in two channel Darlington transistor H-bridge

This is a short review of the RobotKits.co.in two channel Darlington transistor H-bridge.

POVduino

Sir Viswesh was kind enough to send me info on a POV display he made. I am trying to make one, but this is my (gasp) first time arduinoing it up. So I have a 328P from a "Mintduino" kit. I had a circuit board started but decided last night to freeform the circuit instead. So far I only have a bunch of bits and pieces superglued together, but I like it already. I plan to add a copper wire arm assembly with the battery on the other side as a counter balance. Here are some current photos, I'll update here with progress.

Thanks Viswesh!

Crafting Materials! cheap materials to make robots

  • Rubber Bands
    The rubber bands are useful in any place you would use tape, but they are reusable!
    They are great also for adding grip on wheels for small robots.

  • Foam
    Foam in general is great because it absorbs mechanical shocks and humidity
    It's a great thermal, acustic insulant and it's easy to cut with a blade.
    Some foams can be glued together by heating them, but better to do it outdoor because it can make dangerous smoke.
    Sponge foams are flammable, but they carbonize when heated.

Phase 4.1 - route choices in obstacle avoidance

Nothing new to see externally on the robot, but you can check out all the build pictures over on my photobucket library.

General thoughts on the IP Camera Robot build so far

As I'm getting further along in this build and planning to implement features, I see the limitations on the Adafruit V1/SainSmart Motor Shield and the thought keeps occuring that I may need to do one or several of the following to squeeze more features onto this platform:

Super Cooler Code

Hi guys as some of you know I've been working on code for a project I have in mind, it not a new idea, lots of folks are doing it http://freeaire.com/ , I just want to put my take on it, and perhaps save some store owners some money and make a little myself.

 I live in Maine USA, winters are pretty cold here, lots of small stores have walk in coolers for keeping beer and soda code, so why not when its suitable use that cold air to cool the walk ins, a typical 8' by 20' walking cooler costs $250 or more a month in electricity to operate.

Some design stuff