Let's Make Robots!

Recently Collected Posts

Line Follower, Ultrasound collision avoidance, Streams Video
Using a
  Ok first a little something about the name :) Thought about some fancy name but after that profile picture it reminded me of a Roman Chariot so it got baptized … Read more
Follows a predetermined path now. More coming
Using a
More information, pictures, and videos will follow. The Valdez family is my kids' introduction to building robots.  They are works in progress, and I expect the … Read more
Information on the Picaxe 28 project board
I was working on my LMR robot and I made this Picaxe 28 information picture for my upcoming robot article. I modified this picture to show the ports and mine has my … Read more

Updated instruction manual for Mini Driver

The Mini Driver was released by DAGU some time ago. It is essentially our Magician controller in SMD format. Unfortunately the engineer who designed it does not have very good English so I was asked to re-write the manual. You can view/download the manual from here: https://drive.google.com/file/d/0B__O096vyVYqczRjX1k5LTRkcjA/edit?usp=sharing

Two Dumb Questions; TX/RX LEDs on TTL and Wheel on Motor

Good evening everyone,

Two dumb questions:

One,

I'm working on getting simple RX/TX traffic indicator lights on a 3.3v TTL system.

 

The LED is a tri-color RGB LED (datasheet).  I'm trying to accomplish something like in this post here, the Olin answer.

Getting ready for the service droid :)

So I've ordered the Dagu service droid :) http://letsmakerobots.com/node/38776

I'm getting the service droid with a Rover 5 (4 motors/encoders), 4 channel motor controller and Dagu Red Back Spider.

I already have a Rover 5 with 4 motors on which I use the 4 channel motor controller and Red Back Spider. I'm powering everything from a 2S Lipo (3000mAh). You can see it here: http://letsmakerobots.com/node/31410 or on my blog: http://www.bajdi.com/category/rover-5/

On my current Rover 5 the 2S Lipo feeds 3 devices:

rover 5 w dagu 4 channel motor control hardware problem?

I am running the dagu Rover 5 (4 motor/4 encoder verion) using a Mega2560 and the Dagu 4 channel motor control.  This is my first attempt at a robot, but do have some experience using several models of Arduinos and motor controllers. 

The code I used is from this first message (by Nick Gammon) and wired exactly the same: http://forum.arduino.cc/index.php?topic=82618.0

Its a sumo bot, line follower, and object avoidance, all in one little package.
Using a
   This robot is a rebuild of my Start Here Robot.  One day I was looking for things to do(other than clean my work bench) and saw my my SHR sitting there and … Read more
Seeing OddBot's Chopsticks robot on YouTube was a revelation to me. I all of a sudden realized one didn't need to spend a lot of money making a walking robot. Not … Read more

Sticky, born to disappear :)

As my 4WD slowly evolves, I wanted to think on my next platform.

One of the form that fascinate me is hexapod robots. They quite always looks organics in their moves and it seems that they can be easier to build than full crazy out of price humanoids ;)

My first project on LMR :-) A simple obstacle avoiding robot I built this weekend using a standard "beetle bug" design. It contains no microcontroller, only two … Read more

Has anyone built an iPhone or android App ?

I am in need of a App Maker (either iPhone or android) that will :-

(1) Give button menu system to over 400 pictures

(2) Give Button menu system to 16x 2minute films

(3) Possibility of switching subtitles on/off to above films.

(4) interactivity is the Key to the whole thing.

I have all the Data already made on a DVD (as above) ...i just need to bring my system up to date ...as DVDs are dying...

I have never made any "Apps" before so clueless on the process.....(especial cross platform ie android/iphone)

So....

Real Time Lip Syncing on the cheap

Lipsyncing is the process of making an animatronic costume or model mimic the actions of speaking. I use the term mimic as it is currently impossible to make an artifical tougue or larynx that will duplicate speech. So we have to use a speaker with a recorded voice and have an animatronics track to make the movements.

Real Time Lipsyncing is where you do not have the luxury of being able to record tracks and add the lipmovements. It has to be done on the fly and often whilst interacting ad-hoc with an audience.

Spider controller

The DAGU Red back Spider controller is an Arduino Mega (1280) compatible controller that is especially designed for driving a large number of servos. All 70 I/O pins are terminated in servo compatible 3pin male headers as well as the standard female header and the power supply is a switchmode power supply delivering 5V @ 3A from an input voltage of 7V - 32V.

Updated assembly manual for Service Droid owners

Another minor update. I've now included the instructions for adding the sensor wire to the servos. Note that this will void the servo warantee as we cannot guarantee the quality of your work. The instructions were included because if you do want to modify your servos you should do it before assembly begins.

Droid Planning

Firstly Thanks to Oddbot, Pome & the Dagu team for this amazing Robot.

Assembly time was about 16 hours, that included rebuilding the right wrist to get the servo in a position to be able to pour a liquid ;-)

Well, as some of you may know, I've finally made a 3D printer! It was a long process, mainly due to costs, full of 'oooh' moments and 'why didn't I just buy a … Read more

Controlling an Arduino with a standard RC transmitter/receiver

 

 

Controlling an Arduino with a standard RC transmitter/receiver

There are many ways to remote control an Arduino, Xbee, RF link, IR…

I decided to try and use something I had laying around and that is common among large group of hobbyist : RC transmitter and receiver pair

 

Arduino pro mini undershield

The cheapest Arduino clone on Ebay is probably the small Arduino pro mini clone. I've bought some pro minis on Ebay for less then 3$ a piece from a Chinese seller. It's a tiny board with an ATmega328 running @ 5V. It does not have an USB/serial chip, so you need your own USB to serial converter.

After some years following different DIY sites and forums, I decided that it was time to jump in. I choose to start with a premade platform to ease first steps … Read more
I don't like the lack of any real space for mounting using standoffs, and little screws are a pain, so I made this out of some scrap acrylic I had. Read more
Price: $30 USD

 Collected by 3 members
The Robot Builder's R-duino is an Arduino compatible board for building robots. A bit longer than the original Arduino boards, the RBR has the following features: Read more
I am new to building robots and I decided to attempt a project that would be challenging, ultimately I decided this chellenge would best come from a robotic arm. … Read more

R2D2 Third Leg

Started to work on the third leg today. Inside the body four aluminium pipes guide the platform where the third leg will be attached to. The platform needs more stability going up and down, so extra gliding holes will be placed somewhat higher around each pipe in order to make sure the platform stays horizontal when moved.

Fetch a beacon, Follow Me (beacon), and obstacle avoidance
Using a
Work in progress. I don't know if this will be 2 robots or one yet. My wife got me an OWI Robotic Arm kit and a DFRobot 4wd Chassis for christmas. I picked up … Read more

bluetooth com and processing language rig

These are the source files related to the setup I mentioned in CTC's post about wireless serial com.

 

Reposting info on the setup just for ref.

Alrighty, ctc, got the rig working. The setup is the following:

<ir beacon> transmitting byte sequence from 1-9

<relay station> picaxe 8m with ir receiver showing correct data in the debug window.

Transmitting the byte sequence received from ir beacon via bt to my desktop running the processing code.